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Design loads are important requirements for the development of safe rail vehicle bogies. Nowadays, design loads are determined using multibody simulations (MBS). Due to limited simulation capacities, it is important to reduce the simulation effort as much as possible. Therefore, representative scenarios can be used. These scenarios consider the horizontal track layout, driving conditions and track irregularities. However, vertical track layout is not taken into account. In this paper, the existing method of using representative scenarios is extended by representative vertical scenarios. To this end, vertical track layout is identified using measurements. Based on this identification, the most important parameters of the vertical track layout are identified. With these parameters, a statistical distribution is created. The representative vertical scenarios represent this distribution and therefore the vertical track. After the extension, the representative scenarios contain every important parameter for design loads. The representative scenarios are simulated and the results are compared with reference simulations.

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Integration of Representative Vertical MBS Scenarios in the Simulation Based Determination of Design Loads for Railway Vehicle Bogies

  • 会议论文

  • 发表日期：

    2025年

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  • Raphael Cleven,
  • Samuel Burger,
  • Christian Moser,
  • Burkard Corves

摘要

Design loads are important requirements for the development of safe rail vehicle bogies. Nowadays, design loads are determined using multibody simulations (MBS). Due to limited simulation capacities, it is important to reduce the simulation effort as much as possible. Therefore, representative scenarios can be used. These scenarios consider the horizontal track layout, driving conditions and track irregularities. However, vertical track layout is not taken into account. In this paper, the existing method of using representative scenarios is extended by representative vertical scenarios. To this end, vertical track layout is identified using measurements. Based on this identification, the most important parameters of the vertical track layout are identified. With these parameters, a statistical distribution is created. The representative vertical scenarios represent this distribution and therefore the vertical track. After the extension, the representative scenarios contain every important parameter for design loads. The representative scenarios are simulated and the results are compared with reference simulations.