| 超塑性压缩变形的理论计算及比较 |
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| 引用本文： | 姚祖斌,高增法. 超塑性压缩变形的理论计算及比较[J]. 华侨大学学报(自然科学版), 1990, 0(1): 70-80. DOI: 10.11830/ISSN.1000-5013.1990.01.0070 |
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| 作者姓名： | 姚祖斌 高增法 |
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| 作者单位： | 华侨大学精密机械工程系; 华侨大学精密机械工程系 |
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| 摘 要： | 本文论述了超塑性压缩变形的粘塑性有限元计算方法,对硬铝压缩变形进行模拟计算,得到变形过程中的速度分布、应变率分布,应变分布、应力分布等一系列变形流动信息; 与计算圆柱体超塑性压缩流动应力的上限法、滑移线法和变分法进行比较.计算表明,有限元法和变分法的结果比较接近实验数据.
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| 关 键 词： | 超塑性 压缩变形 理论计算 |
Theoretical Calculation of Superplastic Compression Deformation and Comparison of Various Methods |
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| Yao Zubin Gao Zengfa. Theoretical Calculation of Superplastic Compression Deformation and Comparison of Various Methods[J]. Journal of Huaqiao University(Natural Science), 1990, 0(1): 70-80. DOI: 10.11830/ISSN.1000-5013.1990.01.0070 |
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| Authors: | Yao Zubin Gao Zengfa |
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| Affiliation: | Yao Zubin Gao Zengfa |
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| Abstract: | This paper discusses in detail the viscoplastic finite element method for calculating superplastic compression deformation and gives a simulative calculation on aluminium alloy.A series of information in relation to deformation flowage, including the distribution in velocity,strain rate,strain,and stress,are obtained.Var- ious methods for calculating flow stress of superplastic compression of a cylinder are compared.The results from finite element method and variational method are much more close to experimental data as compared with that from upper bound method and slip-line field method. |
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| Keywords: | superplastic compressive deformation theoretical calculation |
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