| 含半无限长裂纹压电材料的Ⅲ型强度因子 |
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| 引用本文： | 刘淑红,郭增强,邹振祝.含半无限长裂纹压电材料的Ⅲ型强度因子[J].中国安全科学学报,2003,13(9):62-64. |
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| 作者姓名： | 刘淑红 郭增强 邹振祝 |
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| 作者单位： | 1. 北京交通大学土木建筑工程学院
2. 石家庄铁道学院 |
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| 摘 要： | 研究了含半无限长裂纹压电材料在平面内电场和反平面荷载作用下的问题 ,得到了满足拉普拉斯方程、裂纹面边界条件的位移函数解和电势函数解及电弹场的基本解 ,并得到了应力、应变、电位移强度因子和能量释放率。研究结果表明 ,在裂尖 ,电场强度没有奇异性 ,而应变、应力、电位移具有奇异性。
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| 关 键 词： | 压电材料 反平面半无限长裂纹 强度因子 |
| 修稿时间： | 2003年1月1日 |
Mode-Ⅲ Intensity Factors of Semi-infinite Crack in a Piezoelectric Material |
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| Liu Shuhong,Lecturer.Mode-Ⅲ Intensity Factors of Semi-infinite Crack in a Piezoelectric Material[J].China Safety Science Journal,2003,13(9):62-64. |
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| Authors: | Liu Shuhong Lecturer |
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| Abstract: | The problem involved in a mode-Ⅲ semi-infinite crack in piezoelectric material under anti-plane mechanical shear loading and in-plane electrical loading is analyzed, a general solution of electromechanical field is obtained, which is satisfied both the Laplace equation and the boundary conditions of the crack surface and the stress, strain, electric displacement intensity factors are derived. It is shown that electric field is nonsingular in front of crack tip, while strain,stress, electric displacement have singularity. |
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| Keywords: | Piezoelectric material Mode-Ⅲ semi-infinite crack Intensity factor |
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