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Zhengong Zhou, Pei-wei Zhang, Lin-zhi Wu (2007)
The closed form solution of a Mode-I crack in the piezoelectric/piezomagnetic materialsInternational Journal of Solids and Structures, 44
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Methods of theoretical physics
The basic solution of a mode-I finite length crack in an infinite functionally graded piezoelectric material plane was investigated by using the generalized Almansi's theorem and the Schmidt method. The problem was formulated through Fourier transform into two pairs of dual integral equations, in which unknown variables are jumps of displacements across the crack surfaces. To solve the dual integral equations, the jumps of displacements across the crack surfaces were directly expanded as a series of Jacobi polynomials. The solution of the present paper shows that the singular stresses and the singular electric displacements at the crack tips in functionally graded piezoelectric materials carry the same forms as those in homogeneous piezoelectric materials; however, the magnitudes of intensity factors depend on the gradient of functionally graded piezoelectric material properties.
Strength, Fracture and Complexity – IOS Press
Published: Jan 1, 2009
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