| 含表面半椭圆裂纹板裂纹尖端应力强度因子的三维光弹分析 |
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| 引用本文： | 黎之奇,柳春图,胡振威. 含表面半椭圆裂纹板裂纹尖端应力强度因子的三维光弹分析[J]. 实验力学, 1991, 6(4) |
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| 作者姓名： | 黎之奇 柳春图 胡振威 |
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| 作者单位： | 中国科学院力学所，中国科学院力学所，香港大学 |
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| 摘 要： | 本文用三维光弹法得到了含表面半椭圆裂纹板拉伸载荷下应力强度因子 K_Ⅰ沿整个裂纹前缘的分布及由不同裂纹深度引起的有限厚度效应,得到的实验结果与理论结果进行了比较和分析,并对角点上的奇异性进行了定性分析.
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| 关 键 词： | 表面裂纹 应力强度因子 奇异性 |
Three Dimensional Photoelastic Determination of K_I for Surface Semi-elliptic Crack in Plates |
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| LiZhiqi Liu Chuntu. Three Dimensional Photoelastic Determination of K_I for Surface Semi-elliptic Crack in Plates[J]. Journal of Experimental Mechanics, 1991, 6(4) |
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| Authors: | LiZhiqi Liu Chuntu |
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| Abstract: | By three dimensional freezing photoelastic method,stress intensity factors K_I in plates with surface semi-elliptical crack under a tensile load are determined.The effects of dif- ferent depths of crack are obtained and compared with numerical solutions.The singularity at the intersections between the free surface and the crack front is discussed. |
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| Keywords: | surface crack stress intensity factor singularity |
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