摘要
建立某微型车有限元整车模型,根据GB/T 17578上部结构强度(侧翻)法规及试验方法,进行整车上部结构强度仿真计算。由于整车系统涉及多种接触,网格数量级数较大;同时整个侧翻过程属于准静态翻滚过程,倾翻角速度较小,整个过程持续时间几秒到几十秒,仿真计算效率偏低。基于上述,须对微车侧翻仿真计算效率进行提升,采用能量守恒法、多刚体法、变形体转刚体材料三种效率提升方案设计。通过仿真实验计算与实验结果对比表明,三种效率提升方案在一定误差范围内,分别提升仿真计算效率58%、61%、34%。
The finite element model of a micro car is builded,and then according to the regulations and test method of GB/T17578'superstructure strength',the test simulation analysis for strength of the upper is presented. As the vehicle system involves a variety of contacts,the number of grid series is large;at the same time the whole rollover process belongs to the quasi-static rolling process,the tipping angle is small,the whole process duration is several seconds to several tens of seconds,the simulation calculation efficiency is low. Based on the above,the efficiency of microcomputer rollover simulation has to be improved,and the energy conservation method,multi-rigid method and deformable body rigid body material are proposed. The comparison between the experimental results and the experimental results shows that,The efficiency of the three schemes is 58%,61% and 34%,respectively,in the range of certain error.
作者
刘昌业
莫易敏
韦勇
梁永彬
LIU Chang-ye;MO Yi-min;WEI Yong;LIANG Yong-bin(AIC-GM-Wuling Automobile Co.,Ltd.,Guangxi Liuzhou 545007,China;Institute of Tribology School of Mechanical and Electronic Engineering Wuhan University of Technology,Hubei Wuhan 430070,China)
出处
《机械设计与制造》
北大核心
2019年第3期29-32,共4页
Machinery Design & Manufacture
基金
校企合作基金项目资助(S-C08-01W10-904-010-OR19)
