| 平行界面的裂纹对应力强度因子的影响 |
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| 引用本文： | 梁斌,王子敬,张伟,王雨.平行界面的裂纹对应力强度因子的影响[J].船舶力学,2008,12(6):955-964. |
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| 作者姓名： | 梁斌 王子敬 张伟 王雨 |
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| 作者单位： | 河南科技大学建筑工程学院,河南,洛阳,471003;洛阳理工学院工程管理系,河南,洛阳,471023 |
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| 摘 要： | 研究了平行界面的裂纹的最大应力强度因子及影响因素.利用体积力方法和格林函数,最大应力强度因子可以表达为裂纹界面距离与弹性模量比的函数.通过数值计算给出了应力强度因子随裂纹形状、界面距离以及弹性常数的分布,并在此基础上利用√area参数分析了裂纹形状对应力强度因子的影响.研究表明,对于平行于界面的裂纹问题,√area参数是应力强度因子的主要控制因素.平行于界面的椭圆裂纹的研究结果可以用于分析任意三维裂纹的最大应力强度因子.
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| 关 键 词： | 断裂力学 应力强度因子 双材料界面 裂纹 √area参数 |
Effect of Crack Shape on the Stress Intensity Factor for a Crack Parallel to an Interface |
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| LIANG Bin,WANG Zi-jing,ZHANG Wei,WANG Yu.Effect of Crack Shape on the Stress Intensity Factor for a Crack Parallel to an Interface[J].Journal of Ship Mechanics,2008,12(6):955-964. |
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| Authors: | LIANG Bin WANG Zi-jing ZHANG Wei WANG Yu |
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| Institution: | LIANG Bin1,WANG Zi-jing 2,ZHANG Wei1,WANG Yu1(1 College of Architectural Engineering,Henan University of Science , Technology,Luoyang 471003,China,2 Department of Engineering Management,Luoyang Institute of Science , Technology,Luoyang 471023,China) |
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| Abstract: | The maximum stress intensity factors for a crack parallel to an interface are investigated.By using the body force method and Green's functions the solution is obtained.Generally the maxi-mum stress intensity factor will be functions of the distance between crack and interface,and elastic modulus ratio.Moreover,distributions of stress intensity factors are indicated in tables and figures with varying the shape of crack,distance from the interface,and elastic constants.Meanwhile,the effect of crack shape on ... |
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| Keywords: | fracture mechanics stress intensity factor bimaterial interface crack parameter |
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