吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (5): 1583-1592.doi: 10.13229/j.cnki.jdxbgxb20200506
• 车辆工程·机械工程 • 上一篇
Chao MA1(),Yun-kai GAO1(),Zhe LIU1,Yue-xing DUAN1,Lin-li TIAN2,3
摘要:
针对骨架式车身提出一种以材料类型、梁的截面形状和尺寸为离散设计变量的结构优化方法。基于某概念骨架式车身,以其总质量、制造成本、多种载荷工况下指定点的位移和结构中的最大轴向应力均最小,而以第一阶固有频率最大为目标函数,进行多目标优化。使用改进的第三代非支配排序遗传算法求解该多目标优化问题,并且综合考虑了轻量化设计、制造成本及结构性能因素,最终筛选出合理的设计方案。优化结果表明:相较于单一的离散尺寸优化,本文提出的考虑多种类型设计变量的结构优化方法,使轻量化设计效果更加优异。
中图分类号:
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