Русский
Deutsch
中文
KoreaSystem modules
The UM Automotive Module(UM Automotive)
UM Automotive includes mathematical models of tires, program tools for description of road plan and road excitations. UM Automotive includes as well set of typical maneuvers, suspensions, steering systems and elements of trasmission. Module gives user the possibility to estimate dynamical behavior of the vehicle, including forces in the suspension force elements, safety and "road holding" factors, etc...
Read more
The UM Train Module(UM Train)
UM Train module automates the process of train model creation and the analysis of obtained results. The module allows computing the longitudinal dynamics of train in braking, traction and idling modes on a railway track of any configuration...
Read more
The UM Loco Module: Simulation of Railway Vehicle Dynamics(UM Loco)
The program package includes module UM Loco intended for simulation of railway vehicle dynamics in both straight and curve railroad tracks. The simulation is performed in time domain by means of numeric integration of differential or differential-algebraic equations of motion. UM Loco allows the user to create fully parameterized models of vehicles...
Read more
The UM Tracked Vehicle(UM Tracked Vehicle)
The UM Tracked Vehicle module of UM software has been developed for an automatic generation of models of tracked vehicles and analysis of their dynamics...
Read more
The UM FEM Module(UM FEM)
This module let the user a possibility to introduce into a mechanical system deformable bodies undergo large reference displacement but small deformation. Such an approach makes more exact results in comparison with multibody simulation and could be very useful in some cases. This approach could be useful for research of vibration of car body and carriage underframe during the motion of railway vehicle subject to influence from railway track irregularities and a power generating set...
Read more
The CAD Interfaces Module(CAD interfaces)
Modern approach to design of machines and mechanisms assumes creating 3D models with the help of one of the computer-aided design (CAD) software with parallel strength and dynamics analysis. To simplify importing such models from CAD software to Universal Mechanism we developed tools for direct data import from CAD software to Universal Mechanism. Such import tools are collected within the UM CAD Interfaces module. The current UM version supports data import from Autodesk Inventor, SolidWorks, Unigraphics NX, KOMPAS and Pro/ENGINEER...
Read more
The UM Experiments Module(UM Experiments)
It is often required in engineering practice to carry out series of numerical experiments, for example to analyze dynamical behavior and sensitivity of mechanical system or to find out optimal parameters of the system. The built-in module UM Experiments includes a set of tools (scanning, optimization, approximation), for advanced analysis of dynamics of mechanical systems...
Read more
The UM Control(Matlab/Simulink) module
(UM Control)
Universal Mechanism includes UM Control module, which provides interface between Universal Mechanism and Matlab/Simulink. The user can compile his/her own Matlab/Simulink model and attach it into the Universal Mechanism. Matlab/Simulink interface gives the user a possibility to include unlimited number of Matlab/Simulink libraries and interactively turn on/off interfaces...
Read more
The Module of Linear Analysis(UM Base)
he module of linear analysis is a built-in part of the basic UM version.
ОThe module provides the following facilities:
— searching equilibrium positions of a system;
— linearization of equations of motion in the equilibrium position;
— calculation of natural frequencies and animation of natural modes of the system;
— plotting the root locus;
— calculation of the critical velocity of railway vehicles (available for railway version)...
The Subsystem Module (UM Subsystems)
Subsystem technique is a basis of modeling objects with large number of degrees of freedom and creation of database of typical design elements for modeling technical systems. By using this method an object is represented as a tree of subsystems, which are linked by means of force elements and constraints. Any object previously created by the user can be a subsystem. This object may contain any tree of subsystems...
Read more
The Fatigue Analysis Module(UM Durability)
The fatigue analysis starts with the dynamical hybrid model in Universal Mechanism. The flexibility characteristics of the structural parts are incorporated into UM model using a modal formulation based upon component mode synthesis. Basically, this method represents the part's flexibility using a modal basis, which is optimized to account for constraint and force locations. The mode shape displacements and stresses are calculated using the finite element software. The UM Durability module combines the stress time history information generated during series of numerical experiments in UM and the material fatigue strength characteristics to generate the predicted life distribution in the part...
Read more
The Granular Media Module(UM Granular Media)
This module allows including in a UM model a planar granular media, which is a set of particles (rigid polygons and circles). The particles interact with each other by contact forces. Simple models of contact forces are used in the module. Each force consists of two components. The first component is a linear viscoelastic normal force. Another one is a dry friction force with two modes: sliding and sticking...
Read more
The 3D Contact Module(UM 3D Contact)
This module allows simulating of contact interaction of bodies by contact manifolds (graphical objects). The realized contact algorithm is based on the simulation of interaction of arbitrary convex polyhedrons. The set of supplied primitives includes the following types: box, cylinder, cone, ellipsoid, and polyhedron...
Read more Presentations
UM Loco / Rail Profile Wear Evolution
This presentation is about a new UM 9 module which is aimed at predicting wear of railway rail profiles.
Read moreModule: UM Pneumatic Systems (UM PS)
A new module is intended for simulation of multibody systems with Pneumatic Elements
Read moreApplication of UM to optimize wheel profiles on Russian Railways
Presentation is devoted to the optimization of wheel profiles for both freight and passenger cars using Universal Mechanism software.
Read moreBasics of PBS Analysis in Universal Mechanism software
Presentation is devoted to using Universal Mechanism software for PBS analysis of road trains.
Read moreSimulation of Road Vehicle Dynamics Using Universal Mechanism Software
Read moreComputer simulation of train-track-bridge interaction
The aim of the paper is to present the approach for simulation of dynamics of the systems consisting of railway vehicle, flexible track and flexible foundation.
Railway vehicles are considered as multibody systems that include rigid or flexible bodies, joints and force elements. The track model is considered as a periodic 3D structure consisting of rails, pads and sleepers on a flexible foundation. Two rails modelled as Timoshenko beams are discretely supported on the sleepers through the railpads and fasteners, that are modelled as nonlinear force elements. The foundation (bridge, tunnel, overpass) is considered as a flexible multibody system simulated using finite element method.
Vertical response of the track model is verified through comparison with experimental data. Test case of simulation of suburban 6-car train on a flexible railway track and three sections of U-like flexible railway bridge of 30 m each is shown. Comparison of the simulation results with experimental data is given.
Read moreSimulation of Railway Vehicle Dynamics Using Universal Mechanism Software
New! Conventional railway models, models with flexible car bodies and bogie frames, wheel-to-rail contact models, flexible track models, vehicle-track-bridge interaction, rolling contact fatigue, wheel and rail profile wear, stability and safety of railway vehicles: listed above and other questions are considered.
Read moreRailway vehicle and bridge interaction: some approaches and applications
Presented approach is based on method of dynamic simulation of flexible bodies which is implemented in UM software.
Read moreSimulation of flexible rail track dynamics
The approach to simulation of flexible railway track dynamics in Universal Mechanism software is considered. The approach supposes considering rails as Timoshenko beams and slippers as rigid bodies or Euler-Bernoulli beams.
Read moreReal-time model for simulation of tracked vehicles
A massless track-wheel-terrain interaction model for the real-time simulation of tracked vehicles is suggested. The model is oriented for simulation of tracked vehicles on highly non-smooth urban and industrial terrains that include such elements like stairs, vertical obstacles etc.
Read moreSimulation of Derailments
Presentation is devoted to simulation of train derailment processes and the identification of causes of derailments by using Universal mechanism software.
Read moreThree-Piece Bogie Models
Presentation is devoted to models of freight cars based on three-piece bogies and its applications.
Read moreUM RCF Presentation
Presentation is devoted to simulation of accumulation of contact fatigue damages in railway wheels with the help of Universal Mechanism software. Simulation is supported by UM RCF module.
Read morePogorelov D. Numeric Algorithms for Computer-Aided Simulation of Multibody Systems. Formulations and Implementations.
Read moreMechanical Engineering with Universal Mechanism
Read moreWe are on YouTube
All Categories / News
Train & dumper
This example showcases the modeling of a long heavy haul train through a dumper, which allows simulation of train longitudinal dynamics. This model can be used to optimize dumping strategies for trains through a typical dumper. Field measurements using instrumented cars were used for the validation of this model. The model allows investigation of the influence of different operational parameters on in-train forces.
This work has been developed as a joint collaboration between the Institute of Railway Technology (IRT) at Monash University (Melbourne, Australia) and Computational Mechanics Ltd.
The longitudinal dynamics of the train was simulated with the help of UM Train module. The model has only one degree of freedom. A chain of mass points which represent wagons are connected with force and damping elements that represent the draft gear. For the purpose of longitudinal train dynamics the following train resistance forces are considered: gravitational resistance, propulsion resistance (sum of rolling and air resistance forces) and curving resistance.
The results of the computer modeling were validated by comparing them with Instrumented Ore Car (IOC) field recordings. For this purpose, the in-train forces at four separate locations along the train were compared against experimental data obtained from instrumented drawbars. Wagon speeds at those same locations were also studied to check how closely they agreed with measured data. There was good agreement between simulation results and recorded data in terms of both magnitude and trend. The effect of different parameters such as characteristics of the draft gear, free slack in inter-car couplings and the velocity profile of the positioning system on in-train forces were also analyzed.
|
|
| Rotary car dumper and positioner. The picture is taken from a Metso Minerals Industries leaflet. |
|
|
| Computer model of long heavy haul train and car dumper in UM software |
|
|
| Instrumented ore car by IRT |
News & Events
News archive
Subscribe to news
/ 08.06.2023 /
UM training in China
UM training for user CRRC Yangtze
Read more/ 30.06.2022 /
New articles!
Please, note that there are many new articles on the Publications tab from our Chinese colleagues.
/ 12.07.2021 /
New articles
Please, note that there are 5 new articles on the Publications tab
/ 12.07.2021 /
New article!
Dmitry POGORELOV, Alexander RODIKOV. THE TRAPEZOIDAL FINITE ELEMENT IN ABSOLUTE COORDINATES FOR DYNAMIC MODELING OF AUTOMOTIVE TIRE AND AIR SPRING BELLOWS. PART I: EQUATIONS OF MOTION
Read more/ 28.12.2020 /
UM 9 is published
You can download it now.
Read more/ 29.10.2020 /
Simulation of running behavior of a passenger car on balanced and operated speeds at R180m curve
Scientific supervisor: Dr. Rattapoohm Parichatprecha
Center of Excellence for Road and Railway Innovation, Naresuan University, Thailand
/ 29.10.2020 /
Dynamic analysis of EMS vehicle-electromagnetic levitation system-guideway coupling system
Authors: Mr. Chen Zhixian, Dr. Li Zhongji, Dr. Yang Jizhong
Company: Institute of Science and Technology, China Railway Eryuan Engineering Group Co. Ltd
/ 06.10.2020 /
New articles
Please, go to "Publications" section. There are 7 new articles.
/ 20.08.2020 /
Workshop is postponed indefinitely
Unfortunately, the number of speakers who confirmed their participation in the fifth scientific and technical workshop is not enough to form even a two-day program.
Read more/ 21.05.2020 /
UM Loco / Rail Profile Wear Evolution
The completely new UM Loco / Rail Profile Wear Evolution tool is released in UM 9. This tool is aimed at predicting wear of railway rail profiles.
Read more/ 18.05.2020 /
UM Pneumatic Systems
A new UM Pneumatic Systems module is available in UM 9. The module allows including pneumatic elements in multibody systems.
Read more/ 15.04.2020 /
Workshop is postponed
It is a pity to inform you that due to the coronavirus situation it was decided to postpone the fifth scientific and technical workshop “Computer simulation in railway transport: dynamics, strength, wear“
Read more/ 28.02.2020 /
Wheel profile optimization for frieght and passenger cars using Universal Mechanism
A project regarding developing new wheel profiles for Vyksa Steel Works was recently finished. Developed profiles were patented.
Read more/ 20.02.2020 /
New 3D graphics for a railway track
We made some improvements in 3D graphics for a railway track. Ballast layer, concrete and timber sleepers with fasteners will be availabe in the next UM release, see attached pictures.
Read more/ 19.02.2020 /
Deadline for registrations is extended
We inform you that the deadline for registrations to take part in the fifth scientific and technical workshop «Computer simulation in railway transport: dynamics, strength, wear» which will be held on 19-21 May 2020 in Bryansk, Russia has been extended to 3 March 2020.
Read more / 29.12.2019 /
New UM Scene module
The new UM Scene module is pubished in UM 8.5.8. The module is intended for preparing advanced photorealistic environment for UM models. UM Scene includes a collection of standard 3D elements such as buildings, trees, steet elements.
Read more/ 26.12.2019 /
UM 8.3.5 / 8.5.8
New UM releases 8.3.5 / 8.5.5 are available via the following links:
Read more/ 10.12.2019 /
New Article
PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART II: EXAMPLES
Read more/ 08.11.2019 /
The fifth scientific and technical workshop May 19-21, 2020
We invite you to take part in the fifth scientific and technical workshop "COMPUTER SIMULATION IN RAILWAY TRANSPORT: DYNAMICS, STRENGTH, WEAR" which will be held on 19-21 May 2020 in the tourist base “4 seasons”. Workshop address: Naberezhnaya 14a, Zhukovka, Bryansk Region, 242700, Russia.
Read more/ 16.09.2019 /
New article
Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV
PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART I: ALGORITHMS AND IMPLEMENTATION
TRANSPORT PROBLEMS, Volume 14, Issue 3, 2019.
DOI: 10.20858/tp.2019.14.3.15
/ 08.08.2019 /
New article!
Sakalo V.I., Sakalo A.V. Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails. Vestnik of the Railway Research Institute. 2019;78(3):141-148. (In Russian)
https://doi.org/10.21780/2223-9731-2019-78-3-141-148
Read more/ 07.08.2019 /
New article
V. Sakalo, A. Sakalo, A. Rodikov, S. Tomashevskiy. Computer modeling of processes of wear and accumulation of rolling contact fatigue damage in railway wheels using combined criterion. Wear. Volumes 432–433, August 2019, 102900.
Full article available for free till 4/09/2019
Read more/ 09.04.2019 /
UM 8.3.4 / 8.5.7
New UM releases 8.3.4 / 8.5.7 are available via the following links:
Read more/ 25.03.2019 /
Library of Car Suspensions
A library of automotive suspension is finished and will be available in the nearest UM release. The library contains the most common types of suspensions for cars and trucks. The following suspension models will be available soon:
Read more/ 14.03.2019 /
New article! Development of dynamics simulation program for coupling vibration of maglev train-track beam based on UM (in Chinese)
The article "Development of dynamics simulation program for coupling vibration of maglev train-track beam based on UM" in Chinese is published in Computer Aided Engineering journal.
/ 07.03.2019 /
Invitation to CONTACT training course in China
Our colleagues from VORtech BV (The Netherlands) and Tongsuan Technology (China) announced an advanced training course focusing on numerical simulation of Wheel-Rail contact mechanics based on the CONTACT software in May 2019 in Beijing and Chengdu (China).
Read more/ 05.03.2019 /
New converter from STEP and IGES for Universal Mechanism
We have just developed and published a new utility that converts STEP and IGES files into UM compatible UM CAD file format.
Read more/ 07.02.2019 /
New lesson for beginners in UM: cantilever beam
We have finished the new lesson that is devoted to the simulation of a cantilever beam in UM.
Read more/ 20.12.2018 /
Totally new UM Rolling Contact Fatigue module v. 2
The updated UM Rolling Contact Fatigue (UM RCF) module of version 2.0 is included to the new UM 8.3 release.
Read more/ 20.08.2018 /
UM User Meeting 2018 in China
We are very glad to announce UM User Meeting 2018 that will be held 18th-19th of October 2018 in Sichuan province, China.
Download information leaflet.
Read more/ 03.05.2018 /
Beta-testing: UM 8.5
After several years of development we are glad to present the UM 8.5 beta version that is based on the new graphical engine. Please find details below.
Read more/ 03.05.2018 /
New version: UM 8.3
New UM 8.3 version is now available. Revision history is in versions.txt. The list of new features in this release is given below.
Read more/ 25.04.2018 /
Presentations from Workshop 2018
Presentations reported during the IV International Scientific and Technical Workshop "Computer Simulation in Railway Transport: Dynamics, Strength, Wear" are now published:
Read more/ 12.02.2018 /
New article! Computer modelling of process of accumulation of rolling contact fatigue damage in railway wheels.
Some questions of influence of wheel steels hardness on processes of contact-fatigue damages accumulation are considered in the new article of our colleagues.
Read more/ 19.12.2017 /
Now in Facebook! Subscribe!
Dear friends, we are glad to inform you that now you can find our news, videos and photos in Facebook. You may also ask a question or discuss a problem. Exclusive materials for our subscribers!
Read more/ 08.12.2017 /
Training at Newcastle University, UK
From 27 November to 1 December a week-long training in NewRail railway research centre at Newcastle University was held.
Read more/ 30.11.2017 /
Training in Kazakh Academy of Transport and Communications named after M.Tynyshpayev
20-24 November 2017 ten employees of the Kazakh Academy of Transport and Communications named after M.Tynyshpayev (Kazakhstan, Almaty) have been trained. The training was focused on issues of computer simulation dynamics of railway rolling stock.
Read more/ 26.10.2017 /
New article: Optimization of secondary suspension of three-piece bogie with bevelled friction wedge geometry
International Journal of Rail Transportation has published a new article about the results of optimization of secondary suspension of three-piece bogie with bevelled friction wedge geometry, written by our users.
Free full paper (for first 50 downloads)
Read more/ 22.09.2017 /
New article: Simulation of longitudinal train dynamics
We are glad to inform you that the Vehicle System Dynamics journal has published a new article with our participation, in which the results of comparative testing of the train longitudinal dynamics, performed in 9 different simulators from 6 countries, are given. Universal mechanism has shown reliable results in the main group for all four considered train models.
Free full paper (for first 50 downloads)
Read more/ 06.09.2017 /
First International Conference on Rail Transportation 2017
The First International Conference on Rail Transportation took place in Chengdu, China on July 10-12, 2017. In the course of this conference some reports, implemented with the help of the “Universal mechanism” software, were presented.
Read more/ 27.07.2017 /
UM Training in ECJTU
June 17-19, our partner in China, Tongsuan Technology was invited to train the users in East China Jiaotong University. During the training, the users learned dynamics modeling and simulation of railway vehicle, flexible railway track, flexible wheelset and rail/wheel wear based on UM software.
Read more/ 08.05.2017 /
Upcoming training courses in China
Our partner in China – Tongsuan Technology Co., Ltd. – provides UM training courses of various complexities starting from elementary to advanced ones. Please contact our colleagues via um@tong-suan.com to order training or send us your questions regarding it.
Read more/ 08.05.2017 /
Training courses in China
Series of training courses for China Academy of Railway Sciences and Shijiazhuang Tiedao University took place in April 2017.
Read more/ 07.10.2016 /
New version: UM 8.0
New UM 8.0 version is now available. Revision history is in versions.txt. Please find all details regarding the new version in What is new in UM 8.0.
Read more/ 28.06.2016 /
Basics of PBS Analysis in UM
Presentation is devoted to using Universal Mechanism software for PBS analysis of road trains.
Read more/ 28.06.2016 /
Simulation of Road Vehicle Dynamics
Renewed presentation devoted to simulation of road and tracked vehicle dynamics and related questions is published on our web site.
Read more/ 27.06.2016 /
UM in Korea
Two open seminars devoted to computer simulation of vehicle dynamics will be held 7th and 8th of July in Seoul, South Korea, by ableMax company. Railway vehicles will be considered on 7th of July. On 8th of July road and tracked vehicles will be discussed.
Read more/ 25.06.2016 /
CONTACT add-on for UM 8
The CONTACT add-on for UM will be available in the next UM 8. CONTACT add-on is a version of CONTACT that is integrated seamlessly into Universal Mechanism. This provides the option to simulate vehicle dynamics using CONTACTs detailed contact algorithms.
Read more/ 03.06.2016 /
UM in Australia
Series of presentations devoted to simulation of railway vehicle dynamics in Universal Mechsnism took place in branches of Railway Technical Society of Australasia (RTSA) in Perth (May 26), Sydney (May 30), Melbourne (June 1) and Adelaide (June 2).
Read more/ 10.05.2016 /
Railway tools and applications
Renewed presentation devoted to simulation of railway vehicle dynamics and related questions is published on our web site. Download the presentation (PowerPoint presentation, 565 Mb, 162 slides, with animations).
Read more/ 28.04.2016 /
Import from CAD
Plugins for exporting data from Autodesk Inventor, SolidWorks, Unigraphics, Creo and Unigraphics NX in UM-compatible UM CAD format were developed and published on the site. The plugins support both 32- and 64-bit versions of programs. Plugins are freely distributed and do not require any license or Universal mechanism to be installed on a computer.
Read more/ 17.03.2016 /
Import from CAD
Plugins for exporting data from Autodesk Inventor and Unigraphics NX in UM-compatible UM CAD format are available. Plugins support both 32- and 64-bit versions of Autodesk Inventor and Unigraphics NX. Plugins are freely distributed and do not require any license or Universal mechanism to be installed on a computer.
Read more/ 16.03.2016 /
New paper
The paper "R. Kovalev, A. Sakalo, V. Yazykov, A. Shamdani, R. Bowey & C. Wakeling (2016): Simulation of longitudinal dynamics of a freight train operating through a car dumper" is published in Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility.
Read more/ 06.02.2016 /
UM Academy 2016
Welcome to UM training courses. Contact us via office@universalmechanism.com to register for a training or send us your questions regarding it. Instructions how to find us from the nearest international airports and hotels nearby are given here.
/ 21.10.2015 /
Free student license
Free 6-month academic license is provided for (PhD) students on request.
Read more/ 09.10.2015 /
Training in Shanghai
From 21st to 25th of September the third opening training course in 2015 for UM software was successfully held in Shanghai. The users from China Academy Railway Sciences, CRRC Sifang, Beijing Jiaotong University, Shijiazhuang Tiedao University, East China Jiaotong University and Tongji University attended this course.
Read more/ 09.10.2015 /
The XIth All-Russian Congress on Mechanics
The XIth All-Russian Congress on Basic Problems of Theoretical and Applied Mechanics was held in Kazan during August 20-24, 2015. The Laboratory of Computational Mechanics of BSTU was presented by Oleg Dmitrochenko, Alexey Sakalo, Alexander Rodikov.
Read more/ 02.09.2015 /
Ballast dynamics
Simulation of ballast section dynamics which consists of a mixture of new and refined ballast in various operating conditions for optimizing its fractional composition was done. The adequate convergence of the results of computer simulation with the field experiments was obtained.
Read more/ 30.07.2015 /
Training in Beijing
20th-24th July, the second opening training course in 2015 for UM software was held successfully in Beijing. The users from China Academy of Railway Sciences, Beijing Jiaotong University, Lanzhou Jiaotong University and Shijiazhuang Tiedao University attended this course.
Read more/ 22.07.2015 /
Train & dumper
This example showcases the modeling of a long heavy haul train through a dumper, which allows simulation of train longitudinal dynamics. This model can be used to optimize dumping strategies for trains through a typical dumper. Field measurements using instrumented cars were used for the validation of this model. The model allows investigation of the influence of different operational parameters on in-train forces.
Read more/ 24.06.2015 /
UM at the IHHA 2015
UM at the International Heavy Haul Association Conference in Australia.
Read more/ 27.05.2015 /
Training in Chengdu
18th-22nd of May 2015, the first opening training course in 2015 for UM software was held successfully in Chengdu. The users from Southwest Jiaotong University and China Academy Railway Sciences attended this course.
Read more/ 09.03.2015 /
China 2015: Training Schedule
In order to help users to learn UM quickly, our partner in China is going to hold several open training courses for railway and rolling stock industry. The training courses will be held in Chengdu, Beijing and Shanghai, so you can choose the nearest one. The courses are divided into two parts: basic course and advanced courses.
Read more/ 17.02.2015 /
New version: UM 7.5
New UM 7.5 version is now available. Revision history is in versions.txt. Please find new features in recent UM reseases below.
Read more/ 01.11.2014 /
New version: UM 7.4
New UM 7.4 version is now available. Revision history is in versions.txt.
/ 01.11.2014 /
Announce: Model of Flexible Railway Track
New UM tool for simulation of the flexible railway track will be published soon. New tool will allow to analyse stress load and durability of elements of railway track, more accurately predict wheel-to-rail forces, estimate railway track vibrations.
Read more/ 25.07.2014 /
New version: UM 7.3
New UM 7.3 version is now available.
Read more/ 03.02.2014 /
Forum
It is our pleasure to inform all visitors of this site that the forum, that is devoted to various aspects of simulation of dynamics of mechanical systems with the help of Universal Mechanism software, is opened.
Read more/ 14.12.2013 /
New video: BELAZ Dump Trucks and ABRAMS M1A1
New videos with simulation of dynamics of BELAZ Dump Trucks and ABRAMS M1A1 are added to Presentations / Road vehicles play list. Play now.
/ 05.11.2013 /
Presentation in Melbourne
Dr. Roman Kovalev, Deputy Director of Computational Mechanics Ltd, presented the capabilities of Universal Mechanism with respect to railway applications on Monday 18th November at Faculty of Engineering at Monash University, Melbourne, Australia.
Read more/ 02.11.2013 /
UM in Australia
UM signed a partner agreement with the Institute of Railway Technology - the premier track and vehicle railway research centre in Australia.
Read more/ 02.11.2013 /
UM RCF Presentation
New presentation which is devoted to simulation of accumulation of contact fatigue damages in railway wheels with the help of Universal Mechanism software is now available on our web site.
Read more/ 22.10.2013 /
Matlab Import
UM Control/Matlab Import UM 7.1.1 now supports recent Matlab releases R2012 and R2013.
Read more/ 22.10.2013 /
Astra Rail Industries
Astra Rail Industries now uses Universal Mechanism software to simulate freight car and Y25 bogie dynamics. The week training for the staff of the design office in Poprad, Slovakia and testing lab in Arad, Romania took place in Poprad during 7-11 October 2013.
Read more/ 30.07.2013 /
New version: UM 7.1
New UM 7.1 version is now available. New modules and features are considered here.
Read more/ 14.05.2013 /
AR.Drone tennis
Our team have upgraded the AR.Drone to play tennis with it.
/ 10.12.2012 /
UM FEM: new interfaces
UM FEM module now supports some new finite-element analysis programs and its versions. The following FEA programs are now supported: ANSYS 14, MCS.NASTRAN 2010 and NX NASTRAN 8.0.
/ 21.11.2012 /
New UM Module: Rolling Contact Fatigue
New UM Rolling Contact Fatigue module, intended for simulation of accumulation of contact fatigue damages in railway wheels, is announced.
Read more/ 14.11.2012 /
New version: UM 7.0
New version of Universal Mechanism software 7.0 is available.
Read more/ 31.05.2012 /
Discounts for Small Business
Recently we announced prices for small business with 50% discount.
Read more/ 28.01.2011 /
New version: UM 6.0
New UM 6.0 release is available now.
Read more/ 01.07.2010 /
Simulation of Tracked Vehicles (UM Tracked Vehicle module)
New UM Tracked Vehicle module, intended for simulation of tracked vehicle dynamics, is released.
Read morePartners
Publications
All publications
Caiyou Zhao, Duojia Shi, Junyuan Zheng, Yawen Niu, Ping Wang. New Floating Slab Track Isolator for Vibration Reduction Using Particle Damping Vibration Absorption and Bandgap Vibration Resistance
Electronic copy available at: https://ssrn.com/abstract=4049469
Read moreKeping Zhang, Xiaohui Zhang and Shunhua Zhou. Influence of Lateral Differential Settlement of Subgrade on Dynamic Performance of High-Speed Vehicle System
DOI: 10.1061/(ASCE)EM.1943-7889.0002065. © 2022 American Society of Civil
Engineers.
Miao Li, Dinggang Gao, Tie Li, Shihui Luo, Weihua Ma, Xiaohao Chen and Laisheng Tong. Dynamic interaction of medium–low-speed maglev train running on the turnout made of steel structures
Vehicle System Dynamics
International Journal of Vehicle Mechanics and Mobility
https://doi.org/10.1080/00423114.2022.2064757
Read moreZheng Fang, Xing Tan, Genshuo Liu, Zijie Zhou, Yajia Pan, Ammar Ahmed, Zutao Zhang. A novel vibration energy harvesting system integrated with an inertial pendulum for zero-energy sensor applications in freight trains
Applied Energy
https://doi.org/10.1016/j.apenergy.2022.119197
Read moreZhi-Ping Zeng, Yan-Cai Xiao, Wei-Dong Wang, Xu-Dong Huang, Xiang-Gang Du, Lan-Li Liu, Joseph Eleojo Victor, Zhong-Li. The Influence of Track Structure Parameters on the Dynamic Response Sensitivity of Heavy Haul Train-LVT System
Appl. Sci. 2021, 11, 11830. https://doi.org/10.3390/app112411830
Read moreXianxian Yin, Xiukun Wei, Hong Xiao and Jin Shi. The impact of wheel polygonisation to the railway corrugation
Vehicle System Dynamics
International Journal of Vehicle Mechanics and Mobility
https://doi.org/10.1080/00423114.2021.1916047
Read moreShaofeng Wang, Yu Qian, Qingsong Feng, Feng Guo, Dimitris Rizos, Xinwei Luo. Investigating high rail side wear in urban transit track through numerical simulation and field monitoring
Wear
https://doi.org/10.1016/j.wear.2021.203643
Download free full paper
Yun Yang, Qinglie He, Chengbiao Cai, Shengyang Zhu and Wanming Zhai. Coupled vibration analysis of suspended monorail train and curved bridge considering nonlinear wheel-track contact relation
VEHICLE SYSTEM DYNAMICS
https://doi.org/10.1080/00423114.2021.1918727
Gang Wang, Yuanjin Ji, Lihui Ren, Han Leng and Youpei Huang. Wheelset lateral force factor and critical offset distance of the centre pivot of articulated train
Vehicle System Dynamics
International Journal of Vehicle Mechanics and Mobility
https://doi.org/10.1080/00423114.2020.1798474
Read moreKun Luo, Xiaoyan Lei and Xinya Zhang. Vibration Prediction of Box Girder Bridges Used in High-Speed Railways Based on Model Test
International Journal of Structural Stability and Dynamics
DOI: 10.1142/S0219455420500649
Download free full paper
Xianxian Yin, Yidong Hu, Xiukun Wei. Research on the Development of Rail Corrugation in Small Radius Curve of Metro
2020 5th International Conference on Electromechanical Control Technology and Transportation (ICECTT)
DOI 10.1109/ICECTT50890.2020.00114
Download free full paper
Zhiqiang Wang, Zhenyu Lei, Yang Zhao and Yao Xu. Rail Corrugation Characteristics of Cologne Egg Fastener Section in Small Radius Curve
Hindawi
Shock and Vibration
https://doi.org/10.1155/2020/1827053
Download free full paper
Gang Wang, Yuanjin Ji, Lihui Ren, Han Leng and Youpei Huang. Performance analysis of a newly designed single air spring running gear for automated people mover (APM)
Vehicle System Dynamics
International Journal of Vehicle Mechanics and Mobility
DOI: 10.1080/00423114.2020.1798475
Download free full paper
Yuanjin Ji, Lihui Ren and Youpei Huang. Passive radial mechanism of a bogie with the auxiliary steering device for the straddle monorail vehicle
Vehicle System Dynamics
International Journal of Vehicle Mechanics and Mobility
DOI: 10.1080/00423114.2020.1755046
Download free full paper
Yongjie Lu, Yun Yang, Jianxi Wang, Bowen Zhu. Optimization and Design of a Railway Wheel Profile Based on Interval Uncertainty to Reduce Circular Wear
Mathematical Problems in Engineering
https://doi.org/10.1155/2020/9579510
Download free full paper
Zhenyu Lei, Zhiqiang Wang. Generation Mechanism and Development Characteristics of Rail Corrugation of Cologne Egg Fastener Track in Metro
KSCE Journal of Civil Engineering
DOI 10.1007/s12205-020-1614-9
Download free full paper
Zhenyu Lei, Zhiqiang Wang. Contact and creep characteristics of wheel-rail system under harmonic corrugation excitation
Journal of Vibration and Control
DOI: 10.1177/1077546320953358
Download free full paper
Yuanjin Ji, Lihui Ren. Anti-overturning capacity and critical roll angle of straddling monorail vehicle
Journal of Mechanical Engineering Science
DOI: 10.1177/0954406217753234
Xianxian Yin, Xiukun Wei, Hong Xiao & Jin Shi. The impact of wheel polygonisation to the railway corrugation
VEHICLE SYSTEM DYNAMICS
https://doi.org/10.1080/00423114.2021.1916047
Yun Yang, Qinglie He, Chengbiao Cai, Shengyang Zhu &Wanming Zhai. Coupled vibration analysis of suspended monorail train and curved bridge considering nonlinear wheel-track contact relation
VEHICLE SYSTEM DYNAMICS
https://doi.org/10.1080/00423114.2021.1918727
Xianxian Yin, Xiukun Wei and Haichao Zheng. Applying System Dynamics of Discrete Supported Track to Analyze the Rail Corrugation Causation on Curved Urban Railway Tracks
Hindawi
Discrete Dynamics in Nature and Society
Volume 2021, Article ID 9958163, 21 pages
https://doi.org/10.1155/2021/9958163
Download free full paper
Yongzhi Jiang, Pingbo Wu, Jing Zeng, Xingwen Wu, Xing Wang and Qinglie He. Intelligent batch process method for analyzing the effect of the suspension parameters on the vibration of the suspended monorail
Advances in Mechanical Engineering
DOI: 10.1177/1687814020966421
Yongzhi Jiang , Pingbo Wu, Jing Zeng, Xingwen Wu, Qinglie He and Xing Wang. Influence of bridge parameters on monorail vehicle–bridge system — A research with multi-rigid body and multi-flexible body coupling theory and Park method
Journal of Low Frequency Noise,
Vibration and Active Control
DOI: 10.1177/1461348420942355
journals.sagepub.com/home/lfn
Dmitry POGORELOV, Alexander RODIKOV. THE TRAPEZOIDAL FINITE ELEMENT IN ABSOLUTE COORDINATES FOR DYNAMIC MODELING OF AUTOMOTIVE TIRE AND AIR SPRING BELLOWS. PART I: EQUATIONS OF MOTION
TRANSPORT PROBLEMS, Volume 16, Issue 2, 2021.
DOI: 10.21307/tp-2021-030
Ying Song, Lei Liang, Yanliang Du, Baochen Sun. Railway Polygonized Wheel Detection Based on Numerical Time-Frequency Analysis of Axle-Box Acceleration
Applied sciences, 2020. DOI: 10.3390/app10051613
Read moreYifeng Wang, Ping Wang, Zihan Li, Zhengxing Chen, Qing He. Forecasting Urban Rail Transit Vehicle Interior Noise and Its Applications in Railway Alignment Design
Journal of Advanced Transportation, 2020. Volume 2020 Article ID 5896739. https://doi.org/10.1155/2020/5896739
Read moreBo Pan, Wei Zhang, Jianqiu Cao, Xueyong Ma, and Mingliang Zhou. Dynamic Responses of Soils around a One-Hole Double-Track Tunnel with the Metro Train Meeting
Hindawi Shock and Vibration Volume 2020, Article ID 1782803, 16 pages https://doi.org/10.1155/2020/1782803
Read moreYing Song, Yanliang Du, Xuemei Zhang, Baochen Sun. Evaluating the Effect of Wheel Polygons on Dynamic Track Performance in High-Speed Railway Systems Using Co-Simulation Analysis
Applied sciences Published: 4 October 2019. DOI: 10.3390/app9194165
Read moreLi Wang, Zigang Deng, Hongdi Wang, Haitao Li, Kaiying Li, Shunshun Ma. Dynamic Responses of HTS Maglev System Under Track Random Irregularity
IEEE Transactions on Applied Superconductivity Volume 30, Issue 4, June 2020. DOI: 10.1109/TASC.2020.2976995
Read moreMingyuan Gaoa, Jianli Cong, Jieling Xiao, Qing He, Shoutai Li, Yuan Wang, Ye Yao, Rong Chen, Ping Wang. Dynamic modeling and experimental investigation of self-powered sensor nodes for freight rail transport
Applied Energy, Volume 257, 1 January 2020, 113969. https://doi.org/10.1016/j.apenergy.2019.113969
Read moreFengtao Lin,Shuang Zhou,Xiaoqing Dong,Qian Xiao,Hai Zhang,Weihao Hu&Lulu Ke. Design method of LM thin flange wheel profile based on NURBS
Vehicle System Dynamics, 2019. https://doi.org/10.1080/00423114.2019.1657908
Read moreEnli Chen, Xia Zhang and Gaolei Wang. Rigid–flexible coupled dynamic response of steel–concrete bridges on expressways considering vehicle–road–bridge interaction
Advances in Structural Engineering 2019. DOI: 10.1177/1369433219866092
Read moreDmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV. PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART II: EXAMPLES
TRANSPORT PROBLEMS. 2019 Volume 14 Issue 4. DOI: 10.20858/tp.2019.14.4.3
Read morePogorelov D., Rodikov A., Kovalev R. Parallel computations and co-simulation in Universal Mechanism software. Part 1: Algorithms and implementation
Transport problems. Volume 14, Issue 3, 2019. DOI: 10.20858/tp.2019.14.3.15
Read moreSakalo V.I., Sakalo A.V. Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
Vestnik of the Railway Research Institute. 2019;78(3):141-148. (In Russian)
https://doi.org/10.21780/2223-9731-2019-78-3-141-148
Read moreV. Sakalo, A. Sakalo, A. Rodikov, S. Tomashevskiy. Computer modeling of processes of wear and accumulation of rolling contact fatigue damage in railway wheels using combined criterion
Wear. Volumes 432–433, August 2019, 102900
Full paper (Available for free till 4/09/2019)
Read moreHongdi Wang, Zigang Deng, Shunshun Ma, Ruixue Sun, Haitao Li, and Jipeng Li. Dynamic Simulation of the HTS Maglev Vehicle-Bridge Coupled System Based on Levitation Force Experiment
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 29, NO. 5, AUGUST 2019
Read moreRang Zhang, Yuanjin Ji, Lihui Ren, Gang Shen. A Straddle Monorail Running Gear with Single-Axle and Rotating Arm Axle Box Suspension
Urban Rail Transit. Published online: 10 October 2017. DOI 10.1007/s40864-017-0067-z
Read morePogorelov, D.Yu. INFLUENCE OF DRILLING FLUID ON FREE OSCILLATIONS OF DRILLSTRING
"Oil and Gas business" network edition. 2018. №5. UDC 531.39
Read moreOlshevskiy, A., Kulinichev, N., Olshevskiy, A., Kim, C. W., & Yang, H. I. Efficient three-stage approach to fatigue life assessment for transport machines in the context of stilt sprayer performance
Engineering Failure Analysis. Volume 81, November 2017, Pages 10-30 DOI: https://doi.org/10.1016/j.engfailanal.2017.06.028
Read moreV. Sakalo, A. Sakalo, S. Tomashevskiy, D. Kerentcev. Computer modelling of process of accumulation of rolling contact fatigue damage in railway wheels.
International Journal of Fatigue, Volume 111, June 2018, Pages 7–15. https://doi.org/10.1016/j.ijfatigue.2018.02.002
Free full paper (available until March 31, 2018)
Read moreIman Hazrati Ashtiani. Optimization of secondary suspension of three-piece bogie with bevelled friction wedge geometry
International Journal of Rail Transportation, Published online: 09 Jun 2017 DOI 10.1080/23248378.2017.1336652
Free full paper (for first 50 downloads)
Read moreGennady Mikheev, Dmitry Pogorelov and Alexander Rodikov. Methods of Simulation of Railway Wheelset Dynamics taking into account Elasticity
First International Conference on Rail Transportation, Chengdu, China, July 10-12, 2017
Read moreZhuang QI, Wenlian ZHANG, Pengfei LIU and Qiang LEI. Study on the Dynamics Behaviour and MBS Modeling Method of a Subway Track Detecting Vehicle
First International Conference on Rail Transportation, Chengdu, China, July 10-12, 2017
Read moreQian XIAO, Chao CHANG, Jifeng ZHENG, Jiao FANG. Prediction of wheel/rail rolling contact wear under the situation of wheel/rail vibration
First International Conference on Rail Transportation, Chengdu, China, July 10-12, 2017
Read moreJia Xiaohong. Dynamic Performance of Metro Train Passing Through Turnout Branch in Depot
First International Conference on Rail Transportation, Chengdu, China, July 10-12, 2017
Read moreZhihui Chen, Lei Xu, Wanming Zhai. Investigation on the Detrimental Wavelength of Track Irregularity for the Suspended Monorail Vehicle System
First International Conference on Rail Transportation, Chengdu, China, July 10-12, 2017
Read moreMaksym Spiryagin, Qing Wu & Colin Cole. International benchmarking of longitudinal train dynamics simulators: benchmarking questions
Vehicle System Dynamics, Published online: 11 Jan 2017 DOI: 10.1080/00423114.2016.1270457
Free full paper (for first 50 downloads)
Read moreDmitry Pogorelov et al. Train 3D: the technique for inclusion of three-dimensional models in longitudinal train dynamics and its application in derailment studies and train simulators
Vehicle System Dynamics, Published online: 11 Jan 2017 DOI: 10.1080/00423114.2016.1273532
Free full paper (for first 50 downloads)
Read moreAlexander Olshevskiy, Chang-Wan Kim, Hyun-Ik Yang & Alexey Olshevskiy. Wear simulation for the centre plate arrangement of a freight car
Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility. DOI: 10.1080/00423114.2015.1023319
Read moreIman Hazrati Ashtiani, Subhash Rakheja and AKW Ahmed. Influence of friction wedge characteristics on lateral response and hunting of freight wagons with three-piece bogies
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 0954409716647095, first published on May 3, 2016. DOI: 10.1177/0954409716647095.
Read moreR. Kovalev, A. Sakalo, V. Yazykov, A. Shamdani, R. Bowey & C. Wakeling (2016): Simulation of longitudinal dynamics of a freight train operating through a car dumper
Vehicle System Dynamics, https://dx.doi.org/10.1080/00423114.2016.1153115
Read moreIman Hazrati Ashtiani, Mehrnoosh Abedi. Effects of Liquid Cargo on Lateral Stability of B-Train Combination
SAE 2014, Commercial Vehicle Engineering Congress, Illinois, US
Read moreIman Hazrati Ashtiani, A. K. W. Ahmed, Subhash Rakheja, Jimin Zhang. Hunting Characteristics of a Freight Car in Presence of Secondary Suspension Non-Smooth Contact Dynamics
ASME Congress 2014, Montreal, Canada
Read moreIman Hazrati Ashtiani, Subhash Rakheja, A. K. W. Ahmed, Jimin Zhang. Hunting Analysis of a Partially-Filled Railway Tank Car
Joint Rail Conference 2015, San Jose, CA, US
Read moreIman Hazrati Ashtiani, Subhash Rakheja, A. K. W. Ahmed. Hunting and Derailment Analysis of a Partially-Filled Railway Tank Car
IHHA 2015, Perth, Australia
Read moreAmir Kolaei, Iman Hazrati Ashtiani, Mehrnoosh Abedi, Subhash Rakheja. Applicability of Linear Slosh Theory on Stability of the B-train Combination
IAVSD 2015, Graz, Austria
Read moreD. Pogorelov, O. Dmitrochenko, G. Mikheev, R. Gandikota. Flexible multibody approaches for dynamical simulation of beam structures in drilling.
Proc. of the ASME 2014 10th Int. Conf. on Multibody Systems, Nonlinear Dynamics, and Control, MSNDC2014, August 17-20, 2014, Buffalo, New York, USA. DETC2014-35113.
Read moreD. Pogorelov, G. Mikheev, K. Valiullin, R. Gandikota. Use of multibody system approach for torque and drag analysis of long drill strings.
11th World Congr. on Computat. Mech., July 20-25, 2014, Barcelona, Spain, pp. 688-699.
Read moreO. Dmitrochenko, G. Mikheev, D. Pogorelov, R. Gandikota. A nonlinear finite element for simulation of dynamics of beam structures using multibody system approach.
11th World Congress on Computational Mechanics (WCCM XI), July 20-25, 2014, Barcelona, Spain, pp. 655-666.
Read moreKovalev R. Optimizing Multibody Systems: Some Implementations and Results. In Werner Schiehlen and Michael Valasek (eds.)
Preprints of the NATO Advanced Study Institute on Virtual Nonlinear Multibody Systems, Czech Technical University in Prague, Prague, 2002, pp. 107-112
Read morePogorelov D. Multibody System Approach in Simulation of Underwater Cable Dynamics.
Programme and Abstracts. EUROMECH 398, Colloquium on Fluid-Structure Interaction in Ocean Engineering, Technical University Hamburg-Harburg, Hamburg, Germany, October 11-14, 1999.
Read morePogorelov D. Differential-algebraic equations in multibody system modeling.
Numerical algorithms, pp. 183-194, 1998.
Read moreKlaus-G. Hinzen and Roman Kovalev. Hiller’s seismoscope.
Seismological Research Letters, Volume 81, Number 5, September/October 2010, P. 804-810.
Read more