A Moving Mode-III Crack in a Functionally Graded Piezoelectric Strip |
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| Authors: | Keqiang Hu Zheng Zhong |
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| Affiliation: | (1) Department of Mechanics, School of Mechanical Engineering, Tianjin University, Tianjin, 300072, China;(2) Key Laboratory of Solid Mechanics of M. O. E., School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, 200092, P.R. China;(3) Department of Building Engineering, Tongji University, Shanghai, 200092, China |
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| Abstract: | In this paper, the problem of a functionally graded piezoelectric strip with a constant-velocity Yoffe-type moving crack is
considered. By using the Fourier transforms, the problem is first reduced to dual integral equations and then into Fredholm
integral equations of the second kind. The electroelastic field near the crack tip is obtained for electrical impermeable
boundary conditions and electrical permeable boundary conditions, respectively. The results obtained show that the gradient
of the material properties can increase or decrease the magnitudes of the stress intensity factors, and the velocity can disturb
the stress distribution near the crack tip. |
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| Keywords: | functionally graded piezoelectric strip moving crack impermeable permeable |
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