| 多环交界裂纹面在谐振应力波作用下的动应力强度因子 |
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| 引用本文： | 冯文杰,邹振祝. 多环交界裂纹面在谐振应力波作用下的动应力强度因子[J]. 哈尔滨工业大学学报, 2001, 33(3): 336-341 |
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| 作者姓名： | 冯文杰 邹振祝 |
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| 作者单位： | 1. 石家庄铁道学院基础部河北石家庄050043
2. 哈尔滨工业大学航天工程与力学系黑龙江哈尔滨150001 |
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| 摘 要： | 研究埋藏圆柱体中多个环形交界裂纹面上受谐振应力波作用时的弹性波散射问题，以裂纹面的位错密度函数为未知量，利用Fourier积分变换，将问题归结为第二类奇异积分方程；然后通过数值求解奇异积分方程，获得裂纹尖端的动应力强度因子；给出了双裂纹动应力强度因子随入射波频率变化的关系曲线。
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| 关 键 词： | 谐振应力波 弹性波散射 环形界面裂纹 奇异积分方程 动应力强度因子 |
| 文章编号： | 0367-624(2001)03-0336-06 |
| 修稿时间： | 1998-04-10 |
Elastic wave scattering of an interface cylindrical crack subjected |
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| FENG Wen jie,ZOU Zhen zhu. Elastic wave scattering of an interface cylindrical crack subjected[J]. Journal of Harbin Institute of Technology, 2001, 33(3): 336-341 |
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| Authors: | FENG Wen jie ZOU Zhen zhu |
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| Abstract: | Investigated the scattering of steady elastic wave by an interface cylindrical crack. By using Fourier transform and introducing the dislocation density functions as unknown variables, the problem was reduced to a set of singular integral equations of the second kind which were solved numerically to calculate the dynamic stress intensity factors. Numerical results show that material parameters and geometry criteria have both important influences on the resonance peak. |
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| Keywords: | elastic wave scattering interface cylindrical crack singular integral equation dynamic stress intensity factor |
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