| 不同压电介质界面上的反平面运动裂纹 |
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| 引用本文： | 陈增涛,余寿文.不同压电介质界面上的反平面运动裂纹[J].固体力学学报,1999,20(1):77-81. |
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| 作者姓名： | 陈增涛 余寿文 |
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| 作者单位： | 清华大学工程力学系 |
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| 基金项目： | 国家自然科学基金,中国博士后科学基金 |
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| 摘 要： | 利用积分变换技术，得到不同压电介质界面上的平面运动裂纹问题的分析解。结果表明应力及电位移强度因子均与界面裂纹扩展速度及材料参数相关，这不同于均匀压电介质中运动裂纹的结论，当两种压电介质完全相同时，本文结果将退化为均匀压电介质中反平面运动裂纹问题的解。
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| 关 键 词： | 压电介质 Griffith裂纹 界面 反平面断裂 |
ANTI PLANE CRACK MOVING ALONG THE INTERFACE OF DISSIMILAR PIEZOELECTRIC MATERIALS |
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| Chen Zengtao,Yu Shouwen.ANTI PLANE CRACK MOVING ALONG THE INTERFACE OF DISSIMILAR PIEZOELECTRIC MATERIALS[J].Acta Mechnica Solida Sinica,1999,20(1):77-81. |
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| Authors: | Chen Zengtao Yu Shouwen |
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| Abstract: | The problem of an anti plane Griffith crack moving along the interface of dissimilar piezoelectric materials is solved by using the integral transform technique. It is shown from the result that the intensity factors of anti plane stress and electric displacement around the crack tip are dependent on the speed of the Griffith crack as well as the material coefficients. When the two piezoelectric materials are identical, the present result will be reduced to the result for the problem of an anti plane moving Griffith crack in homogeneous piezoelectric materials. |
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| Keywords: | interface Griffith crack piezoelectric material anti plane fracture integral transform technique |
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