| 用晶体弹塑性有限单元法研究双晶金属拉伸变形 |
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| 引用本文： | 卫超,钱仁根,林实,肖纪美.用晶体弹塑性有限单元法研究双晶金属拉伸变形[J].固体力学学报,1989(3). |
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| 作者姓名： | 卫超 钱仁根 林实 肖纪美 |
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| 作者单位： | 北京钢铁学院
(卫超，钱仁根，林实)，北京钢铁学院(肖纪美) |
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| 摘 要： | 本文从单晶体应力-应变关系的精确实验结果和多晶体滑移特性出发,建立相应的计算模型,并采用微观力学和晶体弹塑性有限单元法,研究双晶金属试样的拉伸变形,得到其应力-应变曲线,晶体内滑移变形和应力分布规律,以及晶界影响区对它们的影响。
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| 关 键 词： | 有限单元法 双晶 滑移 拉伸 |
THE SIMULATION OF THE TENSILE DEFORMATION OF BI-CRYSTALS BY CRYSTALLINE ELASTIC-PLASTIC FINITE ELEMENT METHOD |
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| Wei Chao Qian Rengen Lin Shi Xiao Jimei.THE SIMULATION OF THE TENSILE DEFORMATION OF BI-CRYSTALS BY CRYSTALLINE ELASTIC-PLASTIC FINITE ELEMENT METHOD[J].Acta Mechnica Solida Sinica,1989(3). |
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| Authors: | Wei Chao Qian Rengen Lin Shi Xiao Jimei |
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| Institution: | Beijing University of Iron and Steel Technology |
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| Abstract: | In this paper the micromechanical simulative model of the slip deformation process of polycrystals is proposed according to the experimental results of the slip process and the work-hardening characteristics of single crystals. On the basis of the crystalline elasticplastic finite element method, this mechanical model is programmed. Using this program, the tensile test of bi-crystal specimen of f. c. c. metals is modeled numerically. The inhomogeneous distribution of slip lines and the stress in the specimen, especially near the grain boundary, and the stress-strain relationship of bi-crystals are obtained. Finally, these results are discussed from the point of the compatibility of deformation and the characteristics of slip process of crystals. |
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| Keywords: | Finit element method Bicrystalline Slip Tensile |
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