拼焊板保险杠横梁碰撞性能多目标优化  

Multi-objective optimization for crashworthiness of tailor welded blank bumper beam

作　　者：谭飞 王旭飞[1] 焦登宁 张重阳 王蒙 TAN Fei;WANG Xu-fei;JIAO Deng-ning;ZHANG Chong-yang;WANG Meng(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723000,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000

出　　处：《陕西理工大学学报（自然科学版）》2020年第3期7-13,共7页Journal of Shaanxi University of Technology:Natural Science Edition

基　　金：陕西省科技厅工业攻关项目(2016GY-050);陕西省教育厅重点项目(18JS020)。

摘　　要：应用拼焊板技术对保险杠横梁的厚度及材料进行多目标优化,控制横梁质量变化,提高保险杠吸能,以提高保险杠横梁的耐撞性。根据实验要求建立原保险杠横梁与拼焊板横梁摆锤冲击有限元模型,并对其求解。进行三点静压试验,试验与仿真载荷曲线高度吻合,验证了仿真分析的有效性。通过正交试验来确定拼焊板材料,用拉丁超立方采样方法对各材料的厚度进行试验设计,得到不同厚度组合的结果;利用响应面法构造近似目标函数,用ASA自适应模拟退火算法在各自响应面上寻找各板厚最优值。结果表明:优化后的拼焊板横梁比吸能提高了15.16%,具有更好的变形模式,提高了保险杠横梁的耐撞性。The thickness and material of bumper crossbeam are optimized by using tailor welded plate technology to control the quality change of crossbeam,so as to improve the energy absorption of bumper and improve the crashworthiness of bumper crossbeam.According to the experimental requirements,the finite element model of pendulum impact of the original bumper beam and tailor welded plate beam is established and solved.The three-point static pressure test is carried out,and the load curve of the test and simulation is highly consistent,which verifies the effectiveness of the simulation analysis.The thickness of each material is designed by Latin hypercube method.The results of different thickness combinations are obtained.The approximate objective function is constructed by response surface method.The ASA adaptive simulated annealing algorithm is used to find the optimal thickness of each plate on its response surface.The results show that the optimized tailor welded beam increases by 15.16%compared with the energy absorption,which has better deformation mode and improves the crashworthiness of bumper beams.

关 键 词：保险杠横梁 拼焊板 摆锤冲击试验 响应面法 多目标优化 

分 类 号：U461.91[机械工程—车辆工程]