| 引用本文: | 胡康康,彭雄奇,陈军,鲁宏升,张健.基于Yoshida-Uemori材料模型的汽车结构件冲压回弹分析[J].材料科学与工艺,2011,19(6):43-47.DOI:10.11951/j.issn.1005-0299.20110608. |
| HU Kang-kang,PENG Xiong-qi,CHEN Jun,LU Hong-sheng,ZHANG Jian.Springback prediction of automobile body panel based on Yoshida-Uemori material model[J].Materials Science and Technology,2011,19(6):43-47.DOI:10.11951/j.issn.1005-0299.20110608. |
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| 摘要: |
| Yoshida-Uemori随动硬化材料模型能够准确描述应变路径发生变化时材料性能的改变,从而较好地反映复杂加载情况下材料的各向异性.本文基于JSTAMP件分别采用Yoshida-Uemori随动硬化材料模型和各向同性硬化材料模型对汽车高强钢结构件的冲压成形进行了仿真分析与回弹预测,研究了不同材料硬化模型对回弹预测精度的影响,并将仿真分析结果与实验数据进行对比.结果表明,采用Yoshida-Uemori随动硬化材料模型比采用各向同性硬化模型在高强钢的回弹预测中结果要好. |
| 关键词: 冲压成形 有限元模拟 回弹分析 Yoshida-Uemori模型 |
| DOI：10.11951/j.issn.1005-0299.20110608 |
| 分类号:TG386 |
| 基金项目:国家科技重大专项资助课题(2010ZX04014-072;2011ZX04016-051);国家自然科学基金资助项目(51075269,50975236) |
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| Springback prediction of automobile body panel based on Yoshida-Uemori material model |
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HU Kang-kang1, PENG Xiong-qi1, CHEN Jun1, LU Hong-sheng2, ZHANG Jian3
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1.National Die & Mold CAD Engineering Research Center,Shanghai Jiao Tong University,Shanghai 200030,China;2.Shanghai Hengstar Technology Co.Ltd,Shanghai 201203,China;3.Faw Tooling Die Manufacturing Company Ltd,Changchun 130011,China
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| Abstract: |
| Yoshida-Uemori kinematic hardening constitutive model can effectively describe the alterations of material properties under different deformation paths.In this paper,the forming process simulation and springback prediction of an automobile body panel is implemented by using JSTAMP/LS-DYNA.The Yoshida-Uemori constitutive model is selected to characterize the anisotropic material behavior of sheet metal during forming.Simulation predictions on spingback are compared with experimental results to demonstrate the effectiveness and accuracy of the Yoshida-Uemori model.The results indicate that the better springback prediction can be achieved by using Yoshida-Uemori constitutive model compared with orthotropic hardening constitutive models for high strength steel stamping. |
| Key words: stamping finite element method springback Yoshida-Uemori model |
