摘要
为研究车身结构嵌件对白车身扭转刚度的影响,基于白车身扭转刚度仿真分析模型,首先通过自由尺寸优化方法找到结构嵌件在车身关键接头的嵌入位置,再用工程塑料内外饰零件的建模方法设计嵌件骨架结构,然后再次通过自由尺寸优化方法对嵌件骨架进行结构优化和轻量化,从而得到兼顾白车身扭转刚度和重量的嵌件结构。仿真分析结果表明:白车身在重量仅增加0.4%的情况下,扭转刚度提升5.5%,整体一阶扭转模态频率提升5.9%。
In order to study the effect of structural insert to BIW torsional rigidity,firstly,findout the structural insert location on the key joint of the BIW by freesize optimization based on the BIW torsional rigidity simulation analysis model,using the modeling method of engineering plastics interior and exterior parts to design the structural insert structure,then do the optimization and lightweight of the structural insert by freesize optimization again,an optimal structural insert which is considered both BIW torsional rigidity and weight is obtained.The simulation analysis result shows that,the weight of the BIW increases only 0.4%,the torsional rigidity of BIW increases 5.5%,the 1st torsional mode frequency of BIW increases 5.9%.
作者
周源
梁名佳
莫贵文
Zhou Yuan;Liang Mingjia;Mo Guiwen(AISN Innovation Design and Manufacture Co.,Ltd,Guangxi Liuzhou 545000)
出处
《汽车实用技术》
2020年第16期96-98,共3页
Automobile Applied Technology
关键词
自由尺寸优化
白车身
结构嵌件
扭转刚度
Freesize optimization
Body In White
Structural insert
Torsional rigidity
