| 压电陶瓷柱体中裂纹前缘场分析 |
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| 引用本文： | 黄上恒.压电陶瓷柱体中裂纹前缘场分析[J].强度与环境,1998(2):14-19,24. |
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| 作者姓名： | 黄上恒 |
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| 作者单位： | 西安交通大学工程力学系!西安，710049 |
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| 摘 要： | 为了揭示含裂纹的压电陶瓷介质在机械载荷作用下裂纹前缘的力学和电学的奇异行为，以一承受扭矩的压电陶瓷柱体为例，求得了其中所含的圆币形裂纹前缘的应力场和电场移场。
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| 关 键 词： | 压电陶瓷 柱 裂纹 应力强度因子 电位移 应力 |
An Investigation to Fields near Crack Border in a Piezo-ceramics Cylinder |
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| Huang Shangheng.An Investigation to Fields near Crack Border in a Piezo-ceramics Cylinder[J].Structure & Environment Engineering,1998(2):14-19,24. |
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| Authors: | Huang Shangheng |
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| Abstract: | To reveal the singular behaviors in mechanics and electricity near the crack border in piezo-ceramics mediun under mechanical loadings, a piezo-ceramics cylinder subjected to a couple of torsionalmoments is considered in this paper, and the stress and electric displacement fields near the penny-shapedcrack border in the cylinder are obtained. The results show that not only arises the stress cocentration butthe singular charge intensification exists also near the crack border under mechanical loadings. A brief dis-cussion on the results is made finally. |
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| Keywords: | Piezoelectric ceramic Colunm (support) Crack Stress-intensity factor ~ Electric displacement intensity factor |
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