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2 2019

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Parallel computations and co-simulation in universal mechanism software. Part 2: Examples

Pogorelov Dmitry, Rodikov Alexander, Kovalev Roman

Transport Problems

2019

T. 14, z. 4

31--38

The second part of the paper continues a discussion on the topic of paralel computations in railway dynamics. The algorithms described in the first part of the paper are applied to parallel simulation on computers with multicore processors of six different models of rail vehicles and trains with the number of degrees of freedom from about one hundred to more than 20 thousands. A considerable simulation speedup is reported. In addition, an example of evaluation of wheel profile wear on multicore processors and comparison of different approaches to multi-variant computations are considered.

Parallel computations and co-simulation in universal mechanism software. Part 1: Algorithms and implementation

Pogorelov Dmitry, Rodikov Alexander, Kovalev Roman

Transport Problems

2019

T. 14, z. 3

163--175

Parallel computations speed up simulation of multibody system dynamics, in particular, dynamics of railway vehicles and trains. It is important for reduction of required time at the stage of new railway vehicle design, for increase of complexity of studied problems and for real-time applications. We consider realization of paralel computations in Universal Mechanism software in three different areas: simulation of rail vehicle and train dynamics, evaluation of wheel profile wear and multi-variant computations. The use of clusters for parallel running of multi-variant computations is illustrated. Co-simulation based on the interface between Universal Mechanism and Matlab/Simulink and other software tools is discussed.