基于有限元模拟的汽车覆盖件滑移线预测算法  

Prediction of slip line on automobile panel based on finite element simulation

作　　者：任秀芬[1] 章志兵[1] 李贵[1] 杜亭[1] 柳玉起[1] 杨永康 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,武汉430074 [2]湖北省齐星汽车车身股份有限公司,随州441300

出　　处：《塑性工程学报》2011年第1期11-15,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50905067)

摘　　要：根据汽车覆盖件冲压成形过程中滑移线的产生机理,在有限元增量法模拟板料变形过程的基础上,假设板料变形过程中,板料上的物质点在单元面积坐标系中的坐标值不变,逐步跟踪滑移线产生与终止过程中的材料流动过程,在FASTAMP后处理系统中实现了滑移线的预测功能。算法计算效率和计算精度较高,为预测汽车覆盖件滑移线缺陷提供了参考,减少了传统模具制造的反复试模过程,提高了生产效率。According to the generating mechanism of slip line, and on the basis of the sheet metal deformation process with finite element incremental method simulation, it＇s supposed that the coordinate value of mass point on the sheet in the elemental area coordinate system kept constant. Through the comparison of the location of current indentation and initial indentation by tracking the material flow process step by step, the prediction of slip line was achieved in FASTAMP-POST system. The efficiency and accuracy of the algorithm are comparatively higher. The method providing reference for prediction of slip line on automobile panels reduces much time spending on repeating test process in traditional die manufacturing, and improves productivity.

关 键 词：汽车覆盖件 滑移线 有限元 模拟 

分 类 号：TG386[金属学及工艺—金属压力加工] TP391.9[自动化与计算机技术—计算机应用技术]