关键词: 管内填充, 侧翻安全性, 轻量化, 仿真分析

Abstract:

According to the ECE R66, the structure of bus body was optimized for lightweight based on the tube filling method herein. Uniform design method was used to set the experimental scheme on the side pillars and roof crossbeams of bus body with different thicknesses of steel tube and lengths of filler in the tube, simultaneously a series of simulation studies on bus rollover safety were conducted. Based on the regression analysis of the simulation results, the regression functions were established by SAS software, the design variables were optimized by MATLAB software. The results show that, under the conditions of bus body meeting ECE R66 for living space, the total weight of optimized side pillar and roof crossbeam structures is decreased by 23.7% and the lightweight design of bus body is realized.

Key words: tube filling, rollover safety, lightweight, simulation analysis