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arXiv · 1706.01657

Symbolic Multibody Methods for Real-Time Simulation of Railway Vehicles

Javier Ros·Aitor Plaza·Xabier Iriarte·Jesús María Pintor
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Abstract

In this work, recently developed state-of-the-art symbolic multibody methods are tested to accurately model a complex railway vehicle. The model is generated using a symbolic implementation of the principle of the virtual power. Creep forces are modeled using a direct symbolic implementation of the standard linear Kalker model. No simplifications, as base parameter reduction, partial-linearization or look-up tables for contact kinematics, are used. An Implicit-Explicit integration scheme is proposed to efficiently deal with the stiff creep dynamics. Hard real-time performance is achieved: the CPU time required for a very stable 1 ms integration time step is 256 {\mu}s.

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Javier Ros, Aitor Plaza, Xabier Iriarte, Jesús María Pintor. 2017-06-06. Symbolic Multibody Methods for Real-Time Simulation of Railway Vehicles. https://arxiv.org/abs/1706.01657

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