汽车后防撞梁安全性能分析及优化

doi:10.16731/j.cnki.1671-3133.2018.12.011

现代制造工程 ›› 2018, Vol. 459 ›› Issue (12): 66-72.doi: 10.16731/j.cnki.1671-3133.2018.12.011

汽车后防撞梁安全性能分析及优化

赖诗洋¹, 夏小均², 徐中明³

1 重庆工程职业技术学院机械工程学院,重庆 402260;
2 重庆车辆检测研究院有限公司,重庆 401112;
3 重庆大学汽车工程学院,重庆 400030

收稿日期:2017-05-14 发布日期:2019-01-07
作者简介:赖诗洋,硕士,主要研究方向为汽车被动安全、CAE仿真。夏小均,博士。徐中明,博士,教授,博士研究生导师。E-mail:joyce_lsy@163.com
基金资助:
重庆市基础与前沿研究计划项目(CSTC2015jcyjBX0075)

Analysis and optimization on safety performance of rear bumper

Lai Shiyang¹, Xia Xiaojun², Xu Zhongming³

1 School of Mechanical Engineering,Chongqing Vocational Institute of Engineering,Chongqing 402260,China;
2 Chongqing Vehicle Test & Research Institute Co.Ltd.,Chongqing 401112,China;
3 School of Automobile Engineering,Chongqing University,Chongqing 400030,China

Received:2017-05-14 Published:2019-01-07

摘要/Abstract

摘要： 以某三厢轿车为对象,建立了其含假人的碰撞有限元模型,通过100 %正面碰撞试验验证了模型的有效性。根据GB 20072—2006和实际生活中的追尾情况,建立了汽车-壁障和汽车-汽车两种追尾碰撞模型,对每种模型分别进行安装和未安装后防撞梁两种情况下的碰撞进行仿真分析。结果表明,未安装后防撞梁时,汽车后部结构变形大幅增加,后排乘员损伤增加,且汽车-汽车形式的追尾碰撞比汽车-壁障追尾碰撞更为严重。采用移动最小二乘响应面法建立预测模型,结合自适应响应面法对汽车后防撞梁的厚度进行优化匹配,有望实现后防撞梁的轻量化和改善后排乘员的损伤情况。

关键词: 追尾碰撞, 后防撞梁, 移动最小二乘响应面法, 自适应响应面法

Abstract: Based on GB 20072—2006 and rear-end collision in real life,finite element model of a passenger car with a dummy in rear-end collision is established,which correspond to car-sled model and car-car model respectively.Each model contains two types:original model and model without rear bumper.The simulation shows that deformation of structures of rear vehicle and injury of passenger increase heavily in model without rear bumper.The situation also happens to car-car model.In general,structural deformation and human injury in car-car model are higher than that in car-sled model.Thickness of rear bumper is optimized via moving least square response surface method and Adaptive Response Surface Method(ARSM).It is expected that to light weighting of rear bumper and improve injury of passenger.

Key words: rear-end collision, rear bumper, moving least square response surface method, adaptive response surface method

中图分类号:

U461.91

赖诗洋, 夏小均, 徐中明. 汽车后防撞梁安全性能分析及优化[J]. 现代制造工程, 2018, 459(12): 66-72.

Lai Shiyang, Xia Xiaojun, Xu Zhongming. Analysis and optimization on safety performance of rear bumper[J]. Modern Manufacturing Engineering, 2018, 459(12): 66-72.

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汽车后防撞梁安全性能分析及优化

Analysis and optimization on safety performance of rear bumper

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