基于ANSYS的汽车B柱成形仿真分析及结构改进设计  

Simulation Analysis and Structural Design Improvements of Automotive B Pillar Forming Based on ANSYS

作　　者：杨琦琦[1] 

机构地区：[1]河北工程技术高等专科学校,河北沧州061001

出　　处：《热加工工艺》2015年第11期177-180,共4页Hot Working Technology

基　　金：国家自然科学基金项目(61874077);河北省教育厅基金项目(2012926);河北省高等学校科学技术研究指导项目(Z2010229)

摘　　要：采用壳单元模型模拟汽车拉延板成形过程,虽计算效率很高,但其只适合于等厚板的拉延成形模拟。为了解决这个问题,应用三维有限元软件ANSYS对变厚板的拉延成形过程进行了模拟。对某型号汽车B柱的成形过程进行了仿真分析,并针对仿真结果中成形件的应力集中和不均匀结构引起的缺陷进行了优化改进。采用圆弧过渡和过渡区下移的优化设计方案有效地解决了初始模具中整体应力分布不均的问题。The calculation efficiency of drawing forming process for automotive plate simulated by using the shell element model is very high, but it is only suitable for drawing forming simulation of equal thick plate. In order to solve this problem,the variable thick plate drawing forming process was simulated by applying three-dimensional finite element software ANSYS. The forming process of a car B column was analyzed. The defects caused by the stress concentration and uneven structure of forming part in simulation results were improved. The optimized design scheme of the arc transition and the transition zone moving down effectively solves of the uneven stress distribution in the initial die.

关 键 词：汽车 B 柱 拉延工艺 模具 ANSYS 数值模拟 

分 类 号：TG385.2[金属学及工艺—金属压力加工]