Transient response of a functionally graded piezoelectric strip with a penny-shaped crack under electric time-dependent loading |
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Authors: | S Ueda F Ashida |
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Affiliation: | (1) Department of Mechanical Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi-ku, Osaka 535-8585, Japan;(2) Department of Electronic and Control Systems Engineering, Shimane University, 1060 Nishikawatsu-cho, Masue, Shimane 690-8504, Japan |
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Abstract: | Summary The dynamic fracture problem for a functionally graded piezoelectric material (FGPM) strip containing a penny-shaped crack
parallel to the free boundaries is considered in this study. It is assumed that the electroelastic properties of the strip
vary continuously along the thickness direction of the strip, and that the strip is under time-dependent electric load. Integral
transform techniques and dislocation density functions are employed to reduce the problem to the solutions of a system of
singular integral equations. The stress and electric displacement intensity factors versus time are presented for various
values of dimensionless parameters representing the crack size, the crack location and the material nonhomogeneity. |
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Keywords: | |
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