The effective electroelastic property of cracked piezoelectric media
The effective electroelastic property of cracked piezoelectric media
复制标题
裂纹压电介质的有效电弹性特性
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Liying Jiang
中科院分区：
文献类型：
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作者：
Xiaodong Wang;Liying Jiang
摘要本文研究了具有平行或随机分布裂纹的压电介质的有效电弹性特性。该理论公式是利用分布裂纹的稀释模型和单个介电裂纹问题的解得出的，其中沿裂纹表面的电边界条件由裂纹张开位移控制。据观察，这种裂纹压电介质的有效电弹性特性是非线性的，并且对负载条件敏感。进行数值模拟以显示裂纹分布和电边界条件对有效电弹性性能的影响。研究了常用的透电和不透电裂纹模型之间的转换。
SummaryThis paper presents a study on the effective electroelastic property of piezoelectric media with parallel or randomly distributed cracks. The theoretical formulation is derived using the dilute model of distributed cracks and the solution of a single dielectric crack problem, in which the electric boundary condition along the crack surfaces is governed by the crack opening displacement. It is observed that the effective electroelastic property of such cracked piezoelectric media is nonlinear and sensitive to loading conditions. Numerical simulations are conducted to show the effects of crack distribution and electric boundary condition upon the effective electroelastic property. The transition between the commonly used electrically permeable and impermeable crack models is studied.