| 关于Drucker公设和塑性本构关系的进一步研究 |
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| 引用本文： | 李永池,唐之景,胡秀章.关于Drucker公设和塑性本构关系的进一步研究[J].中国科学技术大学学报,1988(3). |
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| 作者姓名： | 李永池 唐之景 胡秀章 |
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| 作者单位： | 中国科学技术大学近代力学系
(李永池，唐之景)，中国科学技术大学近代力学系(胡秀章) |
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| 摘 要： | 本文对Drucker公设的表述进行了修正,使之既可处理稳定材料又可处理非稳定材料。同时以应力空间中的加载函数为基础,直接得到了以应变增量表达应力增量的塑性本构关系,这更便于在实际问题特对是在动态数值方法中应用。
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| 关 键 词： | Drucker公设 塑性本构关系 稳定和非稳定材料 屈服函数 |
Further Study on the Drucker Postulate and Plastic Constitutive Relations |
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| Li Yongchi,Tang Zhijing,Hu Xiuzhang.Further Study on the Drucker Postulate and Plastic Constitutive Relations[J].Journal of University of Science and Technology of China,1988(3). |
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| Authors: | Li Yongchi Tang Zhijing Hu Xiuzhang |
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| Institution: | Li Yongchi;Tang Zhijing;Hu Xiuzhang Department of Modern Mechanics |
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| Abstract: | This paper presents a modified formulation of the Drucker postulate which can be applicable to treating both stable and unstable materials. Moreover,we have obtained the plastic constitutive relations with the incremental stressbeing expressed by the incremental strain directly based on the yield functionsin the stress space. This is more convenient for its application to practicalproblems, especially to the dynamic numerical methods. |
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| Keywords: | Drucker postulate plastic constitutive relations stable and unstable materials yield functions |
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