An exact analysis for mode III cracks between two dissimilar magnetoelectroelastic layers |
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Authors: | B-L Wang Y-W Mai |
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Institution: | (1) Centre for Advanced Materials Technology (CAMT), School of Aerospace, Mechanical and Mechatronic Engineering, Mechanical Engineering Building J07, The University of Sydney, Sydney, NSW, 2006, Australia |
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Abstract: | This paper develops a closed-form solution for an interface crack in a layered magnetoelectroelastic strip of finite width.
The strip is subjected to anti-plane mechanical and in-plane electric and magnetic fields. Explicit expressions for the stress,
electric, and magnetic fields, together with their intensity factors, are obtained for two extreme cases of an impermeable
and a permeable cracks. The stress intensity factor does not depend on the electromagnetic boundary conditions assumed for
the crack. However, the electrically and magnetically permeable boundary conditions on the crack profile have a significant
influence on the crack-tip electromagnetic field intensity factors. Solutions for some special cases, such as a central crack,
an edge crack, two symmetric collinear cracks, and a row of collinear interface cracks, are also obtained in closed forms.
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 44, No. 6, pp. 763–784, November–December, 2008. |
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Keywords: | magnetoelectroelastic materials fracture mechanics interface crack |
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