Impermeable Crack and Permeable Crack Assumptions, Which One is More Realistic?
Impermeable Crack and Permeable Crack Assumptions, Which One is More Realistic?
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DOI：
10.1115/1.1748294
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发表时间：
2004-07
期刊：
影响因子：
--
通讯作者：
Baolin Wang;Y. Mai
中科院分区：
文献类型：
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作者：
Baolin Wang;Y. Mai
研究了无裂纹电边界条件在压电断裂中的适用性和作用。通过将介质中的缺陷视为有限宽度的缺口，比较了裂纹表面不同电边界条件假设的结果。发现电不渗透边界是解决工程问题的合理边界。在工程应用中，除非裂纹内部填充导电介质，否则渗透裂纹假设不能直接应用于压电材料的断裂。
This paper investigates the applicability and effect of the crack-free electrical boundary conditions in piezoelectric fracture. By treating flaws in a medium as notches with a finite width, the results from different electrical boundary condition assumptions on the crack faces are compared. It is found that the electrically impermeable boundary is a reasonable one for engineering problems. Unless the flaw interior is filled with conductive media, the permeable crack assumption may not be directly applied to the fracture of piezoelectric materials in engineering applications.