| 金属塑性变形极限判据 |
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| 引用本文： | 王祖唐.金属塑性变形极限判据[J].应用力学学报,2002,19(2):104-106. |
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| 作者姓名： | 王祖唐 |
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| 作者单位： | 清华大学,北京,100084 |
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| 摘 要： | 研究出金属材料塑性变形极限判据，它为断裂力学和失效分析提供理论依据。利用这判据，裂纹尖端的临界应变和相应的临界应力可以确定。在板料成形中，拉应力下颈缩失稳的临界应变值可以定出。节省大量试验工作。
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| 关 键 词： | 塑性变形 极限判据 断裂力学 板料成形极限 金属材料 |
| 文章编号： | 1000-4939(2002)02-0104-03 |
| 修稿时间： | 2001年4月18日 |
A Criterion of Plastic Deformation Limit of Metals |
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| Wang Zutang.A Criterion of Plastic Deformation Limit of Metals[J].Chinese Journal of Applied Mechanics,2002,19(2):104-106. |
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| Authors: | Wang Zutang |
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| Abstract: | A criterion of plastic deformation limit of metals is developed. It provides a theoretical base in fracture mechanics. The critical strain as well as the fracture stress at crack tip can be evaluated. In sheet metal forming processes under tensile stresses, the plastic strain limit can be evaluated. Much experimental work can be saved. |
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| Keywords: | plastic deformation limit fracture mechanics toughness sheet metal forming |
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