SCATTERING OF THE HARMONIC STRESS WAVE BY CRACKS IN FUNCTIONALLY GRADED PIEZOELECTRIC MATERIALS

被引：0
|
作者：
Ma Li Nie Wu Wu Linzhi Zhou Zhengong School of Shipbuilding Engineering
机构：
来源：
Acta Mechanica Solida Sinica | 2005年 / 04期
基金：
中国国家自然科学基金;
关键词：
functionally graded piezoelectric materials; crack; stress intensity factor; stress wave;
D O I：
暂无
中图分类号：
TB34 [功能材料];
学科分类号：
080501 ;
摘要：
The present paper considers the scattering of the time harmonic stress wave by a single crack and two collinear cracks in functionally graded piezoelectric material (FGPM). It is assumed that the properties of the FGPM vary continuously as an exponential function. By using the Fourier transform and defining the jumps of displacements and electric potential components across the crack surface as the unknown functions, two pairs of dual integral equations are derived. To solve the dual integral equations, the jumps of the displacement and electric potential components across the crack surface are expanded in a series of Jacobi polynomials. Numerical examples are provided to show the influences of material properties on the dynamic stress and the electric displacement intensity factors.
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页码：295 / 301
页数：7
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