压电材料中两平行对称可导通裂纹断裂性能分析

周振功; 王彪

压电材料中两平行对称可导通裂纹断裂性能分析

周振功,
王彪

哈尔滨工业大学复合材料研究所, 哈尔滨 150001

基金项目: 国家杰出青年基金资助项目(19725209);黑龙江省自然科学研究基金资助项目;黑龙江省博士后基金资助项目

详细信息

作者简介:
周振功(1963- ),男,河南镇平人,教授,博士,博士导师(E-mail:zhouzhg@hope.hit.edu.cn).

中图分类号: O345.51
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- 被引次数: 0
出版历程
- 收稿日期: 2001-07-19
- 修回日期: 2001-04-26
- 刊出日期: 2002-12-15

The Behavior of Two Parallel Symmetric Permeable Cracks in Piezoelectric Materials

P O Box 2147, Center for Composite Materials and Electro-Optics Research Center, Harbin Institute of Technology, Harbin 150001, P R China

摘要

摘要: 采用Schmidt研究了压电材料中对称平行的双可导通裂纹的断裂性能,利用富里叶变换使问题的求解转换为求解两对以裂纹面位移之差为未知变量的对偶积分方程,并采用Schmidt方法来对这两对对偶积分程进行数值求解。结果表明应力强度因子和电位移强度因子与裂纹的几何尺寸有关。与不可导通裂纹有关结果相比,可导通裂纹的电位移强度因子远小于相应问题不可导通裂纹的电位移强度因子。
- 压电材料 /
- 裂纹 /
- Schmidt方法 /
- 对积偶分方程 /
- 应力强度因子
Abstract: The behavior of two parallel symmetric cracks in piezoelectric materials under anti-plane shear loading was studied by the Schmidt method for the permeable crack face conditions. By using the Fourier transform, the problem can be solved with two pairs of dual integral equations in which the unknown variable is the jump of the diplacement across the crack surfaces. These equations were solved using the Schmidt method. The results show that the stress and the electric displacement intensity factors of cracks depend on the geometry of the crack. Contrary to the impermeable crack surface condition solution, it is found that the electric displacement intensity factors for the permeable crack surface conditions are much smaller than the results for the impermeable crack surface conditions.
- piezoelectric material /
- parallel crack /
- Schmidt method /
- dual-integral equation /
- stress and electric displacement

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参考文献(34)

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