| 求解混合型裂纹应力强度因子的围线积分法 |
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| 引用本文： | 杨晓翔,范家齐,匡震邦.求解混合型裂纹应力强度因子的围线积分法[J].计算力学学报,1996,13(1). |
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| 作者姓名： | 杨晓翔 范家齐 匡震邦 |
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| 作者单位： | 大庆石油学院机械系!151400(杨晓翔，范家齐)，西安交通大学!710049(匡震邦) |
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| 摘 要： | 本文用复变函数理论推导出裂纹的辅助场，并用Betti功互等定理给出求解混合型裂纹应力强度因子的远场围绕积分法．此方法与积分路径的选择无关，用有限元法计算出远离裂纹尖端的位移场和应力场，就可通过计算绕裂端的围线积分，精确地给出混合型裂纹的应力强度因子KⅠ和KⅡ的数值解．
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| 关 键 词： | 应力强度因子 有限元法/守恒积分 |
A contour integral method for stress intensity factors of Mixed-Mode crack |
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| Yang Xiaoxiang,Fan Jiaqi.A contour integral method for stress intensity factors of Mixed-Mode crack[J].Chinese Journal of Computational Mechanics,1996,13(1). |
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| Authors: | Yang Xiaoxiang Fan Jiaqi |
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| Abstract: | On the basis of Muskhelishvili's complex function theory, an auxiliary field of mixedmode crack was accomplished, and then using Betti's reciprocal work theorem, a path independent contour integral method for stress intensity factors of mixed-mode crack was obtained. When the stress and displacement fields in a specimen are calculated by finite element method, the stress intensity factors K and K of mixed-mode crack can be obtained immediately by a contour integral. |
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| Keywords: | stress intensity factor finite element method/conservation integration |
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