摘要
针对某乘用车原钢制保险杠低速碰撞变形大的问题和汽车轻量化设计的需求,新开发了铝合金保险杠。分别建立了原钢制保险杠和新开发的铝合金保险杠的有限元模型,对其进行了三点静压仿真,并进行了试验验证。结果表明,铝合金保险杠强度性能优于原钢制保险杠。通过台车碰撞仿真和试验,分析了两款保险杠的耐撞性,相同工况下铝合金保险杠防撞梁的变形量和台车减速度值均小于钢制保险杠,其耐撞性优于原钢制保险杠。
In view of the large deformation of the original steel bumper under low-speed crash and the need of vehicle lightweight design,a new aluminum alloy bumper is developed.The finite element models for both the original steel bumper and the newly developed aluminum alloy bumper are established,and the three-point static loading simulation for both bumpers are conducted and verified by test.The results show that the strength performance of aluminum alloy bumper is higher than that of steel bumper.Through the simulation and real sled test,the crashworthiness of two bumpers are analyzed,the results indicate that under the same condition,both the deformation of aluminum anti-collision beam and the deceleration of sled are smaller than those of steel bumper,and the crashworthiness of aluminum alloy bumper is better than that of original steel bumper.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第3期293-297,共5页
Automotive Engineering
基金
汽车车身先进设计制造国家重点实验室开放基金(31015011)资助
关键词
轻量化
铝合金保险杠
三点静压试验
台车试验
耐撞性
lightweighting
aluminum alloy bumper
three-point static loading test
sled test
crashworthiness
