| 金属板料成形过程的数值分析 |
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| 引用本文： | 谭红,连建设.金属板料成形过程的数值分析[J].农业机械学报,1997,28(3):100-104. |
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| 作者姓名： | 谭红 连建设 |
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| 作者单位： | [1]机械工业部北京机电所 [2]吉林工业大学材料科学与工程学院 |
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| 摘 要： | 采用刚塑性大变形有限元法成功地模拟了圆板半球凸模胀形的成形过程，分析了材料参数即应变硬化指数，应变速率敏感指数，厚向异性系数和摩擦条件艰胀形件厚度分布的影响。将含有变形损伤效应的本构方程应用于有限元模拟程序，对叠加静水压力对材料内部孔洞长大过程的影响进行了数值分析。模拟结果与实验结果吻合，从而为应用有限元法指导板料成表的工艺设计提供了依据。
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| 关 键 词： | 有限元 板材成形 参数 金属板材 |
NUMERICAL ANALYSIS OF SHEET METAL FORMING |
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| Tan Hong.NUMERICAL ANALYSIS OF SHEET METAL FORMING[J].Transactions of the Chinese Society of Agricultural Machinery,1997,28(3):100-104. |
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| Authors: | Tan Hong |
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| Institution: | Tan Hong (Beijing Research Institute of Mechanical & Electrical Technology) Lian Jianshe\ Hu Ping\ Li Yunxing (Jilin University of Technology) |
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| Abstract: | The forming process of hemispherical punch stretching of circular sheet metal is studied by a large rigid plastic finite element method. The effects of material parameters, hardening ( n value) strain rate sensitivity ( m value) normal anisotropy ( r value) and friction on the thickness distribution have been investigated. A constitutive relation including the effects of deformation damage has been introduced into the rigid plastic finite element method program. The superimposed hydrostatic pressure on superplastic cavity growth has been studied. Theoretically calculated results are in agreement with the experimental ones. It provides basis for improving the technological design of sheet metal forming by using finite element method. |
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| Keywords: | Finite element method Sheet Forming Parameters |
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