摘要
首先对某车型的吸能盒式前防撞横梁总成进行了概念结构设计,针对整车正面40%重叠偏置可变形壁障碰撞和正面100%重叠刚性壁障碰撞,建立了吸能盒式前防撞横梁总成碰撞等效有限元模型,然后选取横梁的截面形状和厚度、吸能盒的截面形状、厚度及材料作为设计因素,碰撞吸能量作为响应,进行了试验设计研究和分析。
The energy absorption crash box bumper beam assembly concept structure for a specified vehicle model is designed at first. The requirements for this model is vehicle frontal crash 40% overlap offset with deformable rigid walls upon impact, and the frontal 100% overlap collision. Based on the requirements, the crash beam assembly's equivalent finite element model is established. The experimental design has been researched and analyzed after the beam cross section, thickness and material properties of the crash beam as well as crash box are selected as design characteristics and the collision energy absorption as response.
引文
[1]雷刚,谭皓文.基于汽车正面碰撞的吸能盒设计及优化[J].重庆理工大学学报:自然科学版,2013(3):1-5.
[2]栾军.现代试验设计优化方法[M].上海:上海交通大学出版社,1995.
[3]茆诗松,周纪芗,陈颖.试验设计[M].北京:中国统计出版社,2012.
[4]李建功,李三红.正面碰撞加速度波形与伤害指标相关性研究[C]//中国汽车工程学会年会论文集,2007:284-287.
[5]王玉正.基于DOE的电磁吸盘优化设计[D].上海:上海交通大学,2007.