Antiplane permeable edge cracks in a piezoelectric strip of finite width |
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| Authors: | XF Li GJ Tang |
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| Affiliation: | (1) College of Mathematics and Physics, Hunan Normal University, Changsha, Hunan, 410081, P.R. China e-mail;(2) School of Aerospace and Materials Engineering, National University of Defence Technology, Changsha, Hunan, 410073, P.R. China |
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| Abstract: | A priezoelectric strip with permeable edge cracks normal to the strip boundaries is analyzed. Under uniform antiplane mechanical shear and inplane electric loading, the distribution of the entire electroelastic field in a cracked piezoelectric strip is determined in explicit analytic form via the conformal mapping technique. It is found that the strain and the electric displacement exhibit the same singularity as the stress near the crack tips, while the electric field is always uniform. The field intensity factors and the energy release rate are independent of the applied electric load for prescribed stress, and related to the applied electric load for prescribed strain. |
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