基于有限元分析的开闭件滚边工艺优化研究Study on Optimization of Hemming Process for Automotive Closures Based on FE Analysis
徐建蓉,张玉成,郑耀凯,叶小军,王博,赖春地
摘要(Abstract):
为提升车身开闭件滚边工艺可靠性、避免外观缺陷,在工艺设计阶段,基于AutoForm软件与CAE数值仿真技术,对发动机罩、前门、后门三大总成的滚边工艺进行分析,先后完成2轮滚边仿真分析及1轮仿真验证,结果如下:首轮仿真明确三大总成起皱区域的位置、范围及严重程度;第2轮仿真针对起皱缺陷,调整滚轮参数、法兰边长度等,使三大总成间隙与面差仿真合格率均达到100%,后门间隙合格率提升27.78百分点。仿真验证显示,实测结果与第2轮仿真结果对应性良好:发动机罩间隙控制合格率为86.21%,前、后门总成间隙控制合格率为100%,整体实测结果与仿真结果符合率高于95%;发动机罩、前门、后门面差合格率分别为67.24%、67.86%、97.22%,且发动机罩、前门实测结果与仿真结果符合率低于81%,原因是未采用链式分析,理想数模仿真无法反映冲压应力与成形公差。
关键词(KeyWords): 滚边工艺;有限元仿真;工艺优化;仿真验证
基金项目(Foundation):
作者(Author): 徐建蓉,张玉成,郑耀凯,叶小军,王博,赖春地
DOI: 10.19710/J.cnki.1003-8817.20250166
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