| SH波作用下裂纹对圆夹杂散射动应力集中问题的影响 |
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| 引用本文： | 李宏亮,刘殿魁. SH波作用下裂纹对圆夹杂散射动应力集中问题的影响[J]. 哈尔滨工程大学学报, 2005, 26(3): 359-363 |
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| 作者姓名： | 李宏亮 刘殿魁 |
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| 作者单位： | 哈尔滨工程大学,建筑工程学院,黑龙江,哈尔滨,150001;哈尔滨工程大学,建筑工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 哈尔滨工程大学基础研究基金资助项目(HEUF040117). |
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| 摘 要： | 研究SH波入射时在圆形夹杂附近存在裂纹的情况下圆夹杂散射动应力集中问题．利用Green函数法求解动应力集中系数．取含有圆形夹杂的弹性全空间上任意一点承受时间谐和的出平面线源荷载作用时位移函数的基本解作为Green函数，采用裂纹“切割”方法建立问题的求解积分，得到圆夹杂周边动应力集中系数的解答．最后给出圆形夹杂附近存在共线与平行直裂纹2种情况的解答，并与无裂纹的情况进行比较。
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| 关 键 词： | 裂纹 Green函数 SH波散射 动应力集中系数 |
| 文章编号： | 1006-7043(2005)03-0359-05 |
| 修稿时间： | 2004-05-14 |
Dynamic stress concentration problem of SH wave by cracks near a circular inclusion |
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| LI Hong-liang,Liu Dian-kui. Dynamic stress concentration problem of SH wave by cracks near a circular inclusion[J]. Journal of Harbin Engineering University, 2005, 26(3): 359-363 |
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| Authors: | LI Hong-liang Liu Dian-kui |
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| Abstract: | The problem of shear horizontal(SH) wave scattering by cracks near a cylindrical inclusion was investigated.To solve the of dynamic stress concentration factor,a special Green's function was constructed.This is a fundamental solution of displacement field for an elastic space possessing a cylindrical inclusion while bearing out-of-plane harmonic line source force at any point.Using the method of crack-division, integration for the solution was established, and the solution of the dynamic stress concentration factor were given.Results for the instance of collinear crack and parallel crack near a cylinder are compared with results without cracks. |
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| Keywords: | crack Green's function SH wave scattering dynamic stress concentration factor |
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