| 复杂冲压件成形过程的截面分析技术 |
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| 引用本文： | 陈焱,胡平,那景新,吴志强.复杂冲压件成形过程的截面分析技术[J].机械工程学报,1999,35(5). |
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| 作者姓名： | 陈焱 胡平 那景新 吴志强 |
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| 作者单位： | 吉林工业大学汽车覆盖件成形技术研究所,长春,130025 |
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| 基金项目： | 中国科学院资助项目，国家科技攻关项目，教育部优秀青年教师资助计划，国家博士研究生科研项目 |
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| 摘 要： | 基于有限变形虚功率增量型原理的弹塑性大变形有限元理论， 建立了高精度的八节点四边形单元平面应变状态下的截面分析模型，并应用非均匀有理Ｂ样条曲线描述模具截面线进行接触判断。旨在用很短的计算时间，获得较理想的板料冲压成形的模拟结果。方模具圆坯料胀形和深拉延成形过程以及发动机油底壳深拉延的模拟与试验结果， 表明了该截面分析技术的正确性、可行性和高效性。
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| 关 键 词： | 截面分析 四边形单元 平面应变 接触判断 |
SECTION ANALYSIS WITH COMPLEX TOOLS FOR NUMERICAL SIMULATION OF SHEET FORMING |
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| Chen Yan,Hu Ping,Na Jingxin,Wu Zhiqiang.SECTION ANALYSIS WITH COMPLEX TOOLS FOR NUMERICAL SIMULATION OF SHEET FORMING[J].Chinese Journal of Mechanical Engineering,1999,35(5). |
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| Authors: | Chen Yan Hu Ping Na Jingxin Wu Zhiqiang |
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| Affiliation: | Jilin University of Technology |
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| Abstract: | A high precision finite element model of eight node quadrangle element is developed for plane strain section analysis with die's section curve described by NURBS to make contact judgement In order to get the prefect analysis result of sheet metal stamping forming in a little computing time,the elastic plastic large deformation finite element method formulation based on virtual work rate principle is used The validity,feasibility and high efficiency of the section analysis technology are testified with the analytic and experimental result of cylindrical punch stretch/draw process and engine oil sump draw process |
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| Keywords: | Section analysis Eight node quadrangle elem ent Plane strain Contact judgement |
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