【作者】 李毅； 兰凤崇； 陈吉清；

【Author】 Li Yi;Lan Fengchong;Chen Jiqing;School of Mechanical & Automotive Engineering,South China University of Technology;

【机构】 华南理工大学机械与汽车工程学院；

【摘要】 以大客车车架与地板总成为研究对象,建立了包含侧围、顶盖及前后围的车体缩减模型。考虑型材厚度的规格化与离散化,对采用连续变量、离散变量和先连续后离散变量的三种结构优化方法进行了分析和对比。综合考虑优化效率与精度和计算时间等因素,提出了基于缩减模型与混合变量优化的方法,获得了符合型材规格的设计变量值,优化方案减重75.16kg。更多还原

【Abstract】 A reduced model for bus skeleton is built using static reduction method.Lightweight design is conducted with discrete variables optimum design,and the results are compared with that of continuous variable optimum design.The results show that adopting the optimization scheme with reduced model and mixed design variables,an efficient trade-off with 4%mass reduction is obtained between lightweight objective and computing cost.更多还原