A General Method on Establishing Fatigue Test Specification of Torsion Beam Rear Axle

摘要

A general method is proposed for establishing the fatigue test specification of torsion beam rear axle (TBRA) in the car. The main characteristic parameters of entire vehicle are analyzed by using ADAMS simulation, to study which vehicle parameter is associated with the load, and figured out the relationship between the testing load and the key vehicle parameter based on the existing test specifications. An illustrative comparison in theoretical fatigue lifetime of the TBRA is presented to demonstrate the feasibility and effectiveness of the proposed fatigue test specification. The proposed method of establishing fatigue test specification can provide a reference for durability evaluation of chassis components and help suppliers achieve the synchronous development with OEMs.