Dynamic characteristics of an eccentric crack in a functionally graded piezoelectric ceramic strip
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The dynamic response of an eccentric Griffith crack in functionally graded piezoelectric ceramic strip under anti-plane shear impact loading is analysed using integral transform method. Laplace transform and Fourier transform are used to reduce the problem to two pairs of dual integral equations, which are then expressed to Fredholm integral equations of the second kind. We assume that the properties of the functionally graded piezoelectric material vary continuously along the thickness. The impermeable crack boundary condition is adopted. Numerical values on the dynamic stress intensity factors are presented for the functionally graded piezoelectric material to show the dependence of the gradient of material properties and electric loadings.
Key wordsPiezoelectric Eccentric Crack FGM (Functionally Graded Material) DSIF (Dynamic Stress Intensity Factor)
Eccentricity off the center line
Non-homogeneous material constant
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