不锈钢点焊车体结构的耐撞性研究  

Crashworthiness Research on Stainless Steel Spot-Welding Car-Body

作　　者：谢素明[1] 张霖[1] 刘晋[2] 

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028 [2]中国北车集团唐山轨道客车有限责任公司技术中心,河北唐山063035

出　　处：《大连交通大学学报》2015年第1期10-14,共5页Journal of Dalian Jiaotong University

基　　金：国家科技支撑计划课题资助项目(2013BAG21Q01)

摘　　要：某不锈钢点焊地铁车车体正面碰撞时,因其吸能结构吸能效果不足,致使客室区域出现皱褶变形情况.通过研究车体吸能结构的材料特性、壁厚、预变形以及结构形状对其吸能特性的影响,筛选出最优车体吸能结构.车体改进后前端吸能结构吸能占车体总吸能的93.5%,较原方案提高28.2%.Passenger compartment region of a stainless steel spot-welding car-body would be wrinkled, due to deficiency of its energy-absorbing structure, when it encountered a frontal collision. An optimal energy-absorb- ing structure of the car-body is deduced, considering influence of material properties, thickness, pre-deformed and structure shape on energy absorption characteristics. Absorbing energy of the optimal structure is improved by 28.2%, compared to original structure.

关 键 词：点焊车 耐撞性 吸能结构 

分 类 号：U270.1[机械工程—车辆工程]