客车底盘结构安全性分析与轻量化设计

doi:10.12052/gdutxb.180086

Abstract

Abstract: The traditional vehicle design and optimization relies on the expert knowledge which leads to long development cycle, mass consumption of human resources and materials. In addition, this kind of method also determines that it cannot meet the market demand. The development of the finite element method provides a solution for vehicle structure design and optimization. Aiming at improving the handling stability and the structure safety, this research focuses on the lightweight design of a coach chassis. Firstly, a finite element model and its simplified model are constructed based on the finite element method. In this connection, the loading mode and working condition are defined. By combining the practical engineering situation, the chassis structure is modified and the objective function, cost function and variables are defined, and the proposed scheme for lightweight design of the coach chassis is proposed. The modal analysis, stress analysis and deformation analysis of the proposed scheme under bending condition, braking condition and steering condition are verified. The results show that the proposed lightweight design scheme effectively solves the lightweight optimization of the coach chassis based on the dynamic performance of the vehicle, as well as improving the handling stability and the structure safety.

Key words: structure safety, lightweight design, coach chassis, finite element

CLC Number:

TH123

Zhao Jing, Li Jia-lin, Xiong Rui, Zheng Da, Zhang Pan-wang. A Structure Safety Analysis and Lightweight Design for Coach Chassis[J].Journal of Guangdong University of Technology, 2018, 35(06): 31-36.

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