| 基于形变晶粒增殖过程的弹塑性本构模型* |
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| 引用本文： | 何宗彦. 基于形变晶粒增殖过程的弹塑性本构模型*[J]. 应用数学和力学, 1996, 17(3): 247-258 |
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| 作者姓名： | 何宗彦 |
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| 作者单位： | 清华大学工程力学系, 北京 100084 |
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| 摘 要： | 本文根据多晶金属变形的细观过程特征,将形变晶粒分为三类.提出塑性形变晶粒增殖的概念,并由此导出较为简洁的弹塑性本构关系.能对若干实验结果给出合理的解释.表明材料的宏观屈服、率相关和加工硬化等现象与形变晶粒演化的动力学过程密切相关.
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| 关 键 词： | 多晶体 弹塑性变形 木构关系 屈服 加工硬化 位错 |
| 收稿时间： | 1994-11-10 |
Elastic-Plastic Constitutive Models Based on the Multiplication Processes of Deformed Grains |
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| He Zongyan. Elastic-Plastic Constitutive Models Based on the Multiplication Processes of Deformed Grains[J]. Applied Mathematics and Mechanics, 1996, 17(3): 247-258 |
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| Authors: | He Zongyan |
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| Affiliation: | Department of Engineer Mechanics, Qinghua University, Beijing 100084, P. R. China |
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| Abstract: | According to the characteristics of micro-deformation of polycrystalline metal,the author divides grains into three kinds and proposes a new conceptionof deformed grains'multiplication,from which some explicit elastic-Plastic constitutive equations can be deduced and some experimental results can be elplained quantitatively.It shows that the macro-yield, rate-correlativity,work hardening and other phenomena are all closely related to the kinetic process of grains'deformatkon. |
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| Keywords: | polycrystal elastic-plastic deformation constitutive relation yield |
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