Administrator by China Associction for Science and Technology
Sponsored by China Society of Automotive Engineers
Published by AUTO FAN Magazine Co. Ltd.

Automotive Engineering ›› 2021, Vol. 43 ›› Issue (6): 934-942.doi: 10.19562/j.chinasae.qcgc.2021.06.018

Previous Articles     Next Articles

Modeling and Experimental Study on Hysteresis Characteristic of Composite Leaf Springs

Helong Liu1,Wenku Shi1,Rui Gao2,Zhiyong Chen1(),Huang Chen2,Yunlong Sun3   

  1. 1.Jilin University,State Key Laboratory of Automotive Simulation and Control,Changchun 130022
    2.Automotive Research Institute of China National Heavy Duty Truck Group Co. ,Ltd. ,Jinan 250100
    3.Harbin FRP Institute Co. ,Ltd. ,Harbin 150036
  • Received:2020-12-08 Revised:2021-01-05 Online:2021-06-25 Published:2021-06-29
  • Contact: Zhiyong Chen E-mail:chen_zy@jlu.edu.cn

Abstract:

Bouc?Wen tribology theory is applied to the setting up of the hysteresis characteristic model of composite leaf springs, and according to the dynamic force?displacement curves obtained by bench test, the model parameters are identified by using the modified crow search algorithm (MCSA). The simulation results well agree with the test ones, showing that the model can accurately predict the hysteresis characteristic of composite leaf spring. A seven DOF vehicle dynamic model is established with consideration of the hysteresis characteristic of composite leaf spring, and the influence of the hysteresis characteristic of composite leaf springs on the dynamic response of vehicle under random road excitation is analyzed. The results indicate that the hysteresis characteristic of composite leaf spring increases the mass?center acceleration of sprung mass and the restoring force of leaf spring, and reduces the dynamic deflection of suspension. This study provides a reference for the vehicle matching and the refined dynamic modeling of composite leaf springs.

Key words: composite leaf spring, hysteresis characteristic, ride comfort, Bouc?Wen model, crow search algorithm