基于有限元分析的开闭件滚边工艺优化研究

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中图分类号：TG386.32；TP391.7 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250166

Study on Optimization of Hemming Process for Automotive Closures Based on FE Analysis

Xu Jianrong， Zhang Yucheng， Zheng Yaokai， Ye Xiaojun，Wang Bo，Lai Chundi （Seres Automobile Company Limted， Chongqing 400038）

Abstract： To improve the reliability of hemming processes for automotive closure panels and prevent appearance defects，the hemming processes of the hood，front door，andrear door assembliesareanalyzed during the process design phase using AutoForm software and CAEnumerical simulation technology.2 rounds of hemming simulation and 1roundofsimulationvalidationareconducted，yieldingthefollwingresults：Thefirstsimulationidentifiesthe location，extent，andseverityof wrinkling in the3assmblies.Thesecond simulationaddresses the wrinklingdefects byadjustingrolerparametersand flange lengths，achievinga1OO%qualificationrate forboth gapandflushness simulationsacrossall3assemblies，with thereardoorgapqualificationrateincreasing by27.78percentagepoints. Validationresults show strong correspondence between the measured dataandthe first simulation： the hood gapcontrol qualification rate is 86.21% ，while the front and rear door assemblies achieved 1OO% gap control qualification.The overall consistency between measured and simulation results exceed 95 % .The flushness qualification rates for the hood，front door，and rear door are 67.24% ， 67.86% ，and 97.22% ，respectively.However，the consistency between measured and simulation results forthe hoodand front dooris below 81%，primarilydue to theabsenceof chain analysisandthe inabilityof ideal numerical simulations toaccount for stamping stress and forming tolerances.

Keywords：Hemming process，FE simulation，Process optimization，Simulationvalidation

1前言

车身滚边的美观度、内外板的连接强度以及滚边方式成为主机厂关注的焦点。（剩余7703字）