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This study develops a high-fidelity multibody dynamics model for a wheeled vehicle, integrating body and suspension subsystems. While conventional suspension models simplify the system as linear spring-dampers, real suspensions exhibit multi-degree-of-freedom (MDOF) characteristics. Such simplified models often neglect dynamic coupling effects by considering only vertical single-degree-of-freedom (SDOF) motion. To address this limitation, we establish a refined double-wishbone independent suspension model that accurately represents kinematic mechanisms via linkages and control arms. The Multibody System Transfer Matrix Method (MSTMM) is implemented through specialized software (MSTMMSim) for dynamics simulation. Key ride dynamics metrics—including vertical displacement, velocity, and acceleration—are analyzed. Simulation results show excellent agreement with ADAMS (commercial multibody dynamics software), validating model accuracy. Compared to traditional methods, MSTMM demonstrates superior computational efficiency and low matrix order when handling complex multibody systems. This work provides an efficient and reliable solution for vehicle system dynamics analysis.

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Wheeled Vehicle Dynamics Modeling and Simulation Using Multibody System Transfer Matrix Method Simulation Software

  • 会议论文

  • 发表日期：

    2026年

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  • Haoran Huang,
  • Junjie Gu,
  • Xizhe Zhang,
  • Shaoheng Hu

摘要

This study develops a high-fidelity multibody dynamics model for a wheeled vehicle, integrating body and suspension subsystems. While conventional suspension models simplify the system as linear spring-dampers, real suspensions exhibit multi-degree-of-freedom (MDOF) characteristics. Such simplified models often neglect dynamic coupling effects by considering only vertical single-degree-of-freedom (SDOF) motion. To address this limitation, we establish a refined double-wishbone independent suspension model that accurately represents kinematic mechanisms via linkages and control arms. The Multibody System Transfer Matrix Method (MSTMM) is implemented through specialized software (MSTMMSim) for dynamics simulation. Key ride dynamics metrics—including vertical displacement, velocity, and acceleration—are analyzed. Simulation results show excellent agreement with ADAMS (commercial multibody dynamics software), validating model accuracy. Compared to traditional methods, MSTMM demonstrates superior computational efficiency and low matrix order when handling complex multibody systems. This work provides an efficient and reliable solution for vehicle system dynamics analysis.