侧碰工况下差厚板B柱过渡区网格处理  

Mesh Treatment of the Transition Zone about B-pillar Used Tailor Rolled Blank under Side Impact

作　　者：胡贤磊[1,2] 邵阿庆 HU Xianlei;SHAO Aqing(The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang Liaoning 110819;Suzhou Dongbaohaixing Metal Material Science and Technology Co.,Ltd.,Jiangsu Suzhou 215000)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]苏州东宝海星金属材料科技有限公司,江苏苏州215000

出　　处：《汽车实用技术》2022年第2期76-81,共6页Automobile Applied Technology

基　　金：2017国家重大基础材料专项NO.2017YFB0304105资助。

摘　　要：B柱是汽车侧碰的重要安全件,差厚板B柱目前在汽车中的应用越来越广,其过渡区的数目、位置和长度影响侧碰性能。基于传统的过渡区网格处理技术,更改过渡区参数极为复杂。将B柱中部画成许多水平条状网格,通过赋予水平网格不同厚度,即可实现过渡区参数的修改,大大简化了前处理流程。文章以某白车身侧围主要结构件为模型建立侧碰工况,对比发现,两种方法B柱侧碰性能相近。基于改进方法,做了一系列过渡区不同参数的侧碰试验,并对各参数侧碰性能进行了对比分析。The B-pillar is an important safety part for side impact of automobiles.The B-pillars used tailor rolled blank(TRB)are currently more and more widely used in automobiles.The number,position and length of the transition zone affect the performance of side impact.Based on the traditional grid processing technology of the transition zone,it is extremely complicated to change the parameters of the transition zone.On the basis of the original method,the middle part of the B-pillar is drawn into many horizontal strip grids,and the parameters of the transition zone can be modified only by assigning different thicknesses to the horizontal grids,which greatly simplifies the pre-processing process.The side impact condition is established by taking the main structural parts of a body-in-white side wall as a model.The comparison shows that the two methods have similar side impact performance of B-pillar.Based on the improved method,a series of side impact tests with different parameters in the transition zone were done,and the side impact performance of each parameter was compared and analyzed.

关 键 词：差厚板B柱 过渡区 侧碰性能 

分 类 号：U467[机械工程—车辆工程]