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Automotive Engineering ›› 2025, Vol. 47 ›› Issue (12): 2431-2440.doi: 10.19562/j.chinasae.qcgc.2025.12.015

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Research on the Multi-dimensional Dynamic Characteristics of Tripod Joints Considering Contact Geometry

Yinyuan Qiu1,3,Guojing Lin1,Yunfei Zha1(),Xiaoyong Wu2,Liang Hong1,Qinda Zeng3   

  1. 1.Fujian University of Technology,Fujian Key Laboratory of Automotive Electronics and Electric Driving Technology,Fuzhou 350118
    2.Zhejiang Xianglong Machinery Co. ,Ltd. ,Ningbo 315300
    3.Fujian Special Equipment Inspection and Research Institute,Fuzhou 350008
  • Received:2025-03-14 Revised:2025-04-26 Online:2025-12-25 Published:2025-12-19
  • Contact: Yunfei Zha E-mail:fei244@163.com

Abstract:

In order to investigate the influence of geometries of contact pairs on the multi-dimensional dynamic characteristics of tripod joints, in this paper a dynamic performance analysis method considering contact geometry is proposed. Firstly, based on the principles of conjugate surface, the contact geometry model of a roller-track pair is established, and the constraint relationship between them is solved. Subsequently, a multi-body dynamics model integrating contact geometry characteristics is developed using ADAMS software. And by combining the automatic contact point detection algorithm with geometric projection constraint equations, the computational accuracy of the positions of contact points between rollers and tracks is improved, enabling more precise simulation of their contact mechanics properties. The accuracy of the model is validated through bench tests. The results show that when the contact pressure angle between rollers and tracks increases to 20°, the generated axial force can be reduced by approximately 29% without increasing the joint size, significantly mitigating the excitation of vehicle lateral vibration. This study provides a new approach to resolving the conflict between high NVH performance and lightweight design in tripod constant velocity joints.

Key words: tripod joint, contact geometry, multi dimension, multi-body dynamics