| 多个纵向环形界面裂纹对P波散射的动应力强度因子 |
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| 引用本文： | 冯文杰,邹振祝.多个纵向环形界面裂纹对P波散射的动应力强度因子[J].固体力学学报,2000,21(1):71-78. |
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| 作者姓名： | 冯文杰 邹振祝 |
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| 作者单位： | 石家庄铁道学院基础部,石家庄,050043 |
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| 基金项目： | 国家自然科学基金!(项目编号:59575025) |
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| 摘 要： | 研究多个纵向环形界面裂纹的Ｐ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，获得裂纹尖端的动应力强度因子。最后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： | 弹性波散射 纵向环形界面裂纹 动应力强度因子 |
DYNAMIC STRESS INTENSITY FACTORS OF INTERFACE CYLINDRICAL CRACKS SUBJECTED TO P WAVE |
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| Feng Wenjie,Zou Zhenzhu.DYNAMIC STRESS INTENSITY FACTORS OF INTERFACE CYLINDRICAL CRACKS SUBJECTED TO P WAVE[J].Acta Mechnica Solida Sinica,2000,21(1):71-78. |
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| Authors: | Feng Wenjie Zou Zhenzhu |
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| Abstract: | An investigation for the scattering of elastic waves by interface cylindrical cracks subjected to P wave is presented. 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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