| 基于工程应变的轴对称塑性大变形几何方程及其应用 |
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| 引用本文： | 刘志成.基于工程应变的轴对称塑性大变形几何方程及其应用[J].长沙航空职业技术学院学报,2009,9(1):65-69. |
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| 作者姓名： | 刘志成 |
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| 作者单位： | 益阳水田机械厂,湖南,益阳,413001 |
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| 摘 要： | 从工程线应变和工程切应变的物理概念出发，根据“轴对称”和“大变形”的特点，推导出相应的几何方程，另导出大变形条件下的体积不变定律。与现有“有限变形”条件下的几何方程相比，不但更为精确，而且其表达形式在具体应用中更为简单。在一些典型的工艺问题中，将小变形条件下导出的几何方程应用于大变形情况也可能得出非常好的结果，不但运算简单方便，而且其精度还优于“有限变形”条件下的几何方程。
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| 关 键 词： | 金属压力加工 塑性大变形问题 几何方程 体积不变定律 |
The Geometric Equation for Axial Symmetry Large Plastic Deformation Based on Engineering strain and Its Application |
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| LIU Zhi-Cheng.The Geometric Equation for Axial Symmetry Large Plastic Deformation Based on Engineering strain and Its Application[J].JOurnal of Changsha Aeronautical Vocational and Technical College,2009,9(1):65-69. |
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| Authors: | LIU Zhi-Cheng |
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| Institution: | Yi Yang Rice Paddy Machine Making Factory;Yiyang Hunan 413001 |
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| Abstract: | The paper deduced geometric equation based on the physical concept of engineering linear and shear strain and the characteristics of "axial symmetry" and "large deformation".It is more precise than existing ones based on finite deformation condition,and is simpler in some concrete applications.Moreover,Law of Constant Volume is expressed based on large deformation condition. |
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| Keywords: | metal pressure forming plastic large deformation problem geometric equation Law of Constant Volume |
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