| 引用本文: | 张健伟,胡平,张向奎,许言午.基于广义成形理论的冲压翘曲缺陷的消除方法[J].材料科学与工艺,2014,22(3):86-92.DOI:10.11951/j.issn.1005-0299.20140315. |
| ZHANG Jianwei,HU Ping,ZHANG Xiangkui,XU Yanwu.Elimination method based on universal formability theory for warpage defect of stamping parts[J].Materials Science and Technology,2014,22(3):86-92.DOI:10.11951/j.issn.1005-0299.20140315. |
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| 基于广义成形理论的冲压翘曲缺陷的消除方法 |
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张健伟1,2,胡平1,2,张向奎1,2,许言午3
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(1.大连理工大学 汽车工程学院,大连 116024;2.大连理工大学 工业装备结构分析国家重点实验室,大连 116024;3.福特汽车公司,密西根48121)
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| 摘要: |
| 针对覆盖件冲压成形中的翘曲缺陷,阐述了翘曲产生的原因,在有限元环境下,从调节金属流动的角度出发,基于广义成形理论,提出一种通过调整金属流动使得应变分布均匀或对称,从而消除翘曲缺陷的方法,并编写针对性的有限元分析软件模块SFT Shape Change,通过算例验证了该方法的有效性。 |
| 关键词: FEA 汽车覆盖件 冲压仿真 翘曲 消除方法 |
| DOI：10.11951/j.issn.1005-0299.20140315 |
| 分类号:TP391.9; TG386 |
| 基金项目:中央高校基本科研业务费专项资金(DUT11LK12). |
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| Elimination method based on universal formability theory for warpage defect of stamping parts |
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ZHANG Jianwei1,2,HU Ping1,2,ZHANG Xiangkui1,2,XU Yanwu3
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(1.School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China; 2. State Key Lab of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China; 3. Ford Motor Company, Michigan 48121, U.S.A.)
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| Abstract: |
| To eliminate warpage defect fast and accurately in stamp forming process of auto-body panels, the mechanism of warpage defect is explained and a method is proposed based on FEA. A universal formability theory called UFT was introduced to analyze the defect, and the strain distribution could be symmetrical or uniform by adjusting the metal flow. The method was realized in the “Shape Change” module of independent research and development software “Stamp Forming Troubleshooting(SFT)”, and the analysis results demonstrated that the method was feasibility and efficiency. |
| Key words: FEA auto-body panel stamping simulation warpage elimination method |
