| 拼焊车门内板冲压成形性分析 |
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| 引用本文： | 余海燕,高云凯,朱文峰.拼焊车门内板冲压成形性分析[J].汽车工程,2008,30(10). |
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| 作者姓名： | 余海燕 高云凯 朱文峰 |
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| 作者单位： | 1. 同济大学汽车学院,上海,201804
2. 同济大学机械学院,上海,201804 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研项目，同济大学青年优秀人才培养行动计划 |
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| 摘 要： | 首先介绍了采用不等厚拼焊板的车门内板在冲压成形过程中出现的问题;接着对缺陷区域进行主应变测量和安全成形裕度预测.结果表明,车门内板出现破裂和起皱的主要原因是拉延筋阻力不足和厚、薄两侧板料的流动阻力不均.最后提出采取局部调整拉延筋阻力和压边力等措施来改善车门内板冲压成形性.
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| 关 键 词： | 拼焊板 车门内板 冲压成形性 成形极限图 |
Stamping Formability Analysis for Door Inner Panels Made of Tailor-welded Blanks |
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| Yu Haiyan,Gao Yunkai,Zhu Wenfeng.Stamping Formability Analysis for Door Inner Panels Made of Tailor-welded Blanks[J].Automotive Engineering,2008,30(10). |
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| Authors: | Yu Haiyan Gao Yunkai Zhu Wenfeng |
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| Institution: | Yu Haiyan1,Gao Yunkai1 & Zhu Wenfeng21.College of Automotive Engineering,Tongji University,Shanghai 201804,2.College of Mechanical Engineering,Tongji University,Shanghai 201804 |
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| Abstract: | First, the problems occurred in the forming process of door inner panels made of tailor-welded blanks (TWB) with different thickness are presented; Then the principal strain measurement and forming safety margin prediction in defect regions are conducted. The results show that the main causes of the cracking and wrinkling defects of door inner panels are insufficient drawbead resistance and the discrepancy in material flow resistance between thin and thick sides of TWB. Finally, suggestions are made that some measures should be taken such as local adjustment in drawbead resistance and blank holding force to improve the formability of door inner panels. |
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| Keywords: | tailor-welded blank door inner panel stamping formability forming limit diagram |
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