SINGULAR BEHAVIORS OF INTERFACIAL CRACKS IN 2D MAGNETOELECTROELASTIC BIMATERIALS

The singular characteristics of stress, electric displacement and magnetic induction fields near the tip of impermeable interracial cracks in two-dimensional magnetoelectroelastic bimaterials are studied using the generalized Stroh formalism. Two types of singularities are obtained： one is the oscil...

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Bibliographic Details
Published in:Acta mechanica solida Sinica 2009-06, Vol.22 (3), p.232-239
Main Authors: Fan, Cuiying, Zhou, Youhe, Wang, Han, Zhao, Minghao
Format: Article
Language:English
Subjects:
Classical Mechanics
Engineering
generalized Stroh formalism
interfacial crack
magnetoelectroelastic bimaterial
singularity index
Stroh理论
Surfaces and Interfaces
Theoretical and Applied Mechanics
Thin Films
奇异特性
奇异行为
形式主义
横观各向同性
电磁弹性
界面裂纹
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Summary:The singular characteristics of stress, electric displacement and magnetic induction fields near the tip of impermeable interracial cracks in two-dimensional magnetoelectroelastic bimaterials are studied using the generalized Stroh formalism. Two types of singularities are obtained： one is the oscillating singularity 1/2±iε, the other is the non-oscillating singularity 1/2±κ. It is found that the non-zero parameters ε and κ cannot coexist for one transversely isotropic MEE bimaterial, a similar result is obtained for transversely isotropic piezoelectric bimaterials.
ISSN:0894-9166
1860-2134
DOI:10.1016/S0894-9166(09)60270-6