Transient response of an interfacial crack between dissimilar magnetoelectroelastic layers under magnetoelectromechanical impact loadings: Mode-I problem

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:46

Article

Feng, W. J.¹  Li, Y. S.²  Xu, Z. H.² 

[1] Shijiazhuang Railway Inst, Dept Engn Mech, Shijiazhuang 050043, Peoples R China

[2] Northeastern Univ, Inst Engn Mech, Shenyang 110004, Peoples R China

关键词: Impact;    Interfacial crack;    Mode-I problem;    Magnetoelectroelastic layer;    Dynamic energy release rate;   

DOI  :  10.1016/j.ijsolstr.2009.05.003

来源: Elsevier

【 摘 要 】

The dynamic response of an interfacial crack between two dissimilar magnetoelectroelastic layers is investigated under magnetic, electrical and mechanical impact loadings. Four kinds of ideal crack-face assumptions, i.e., magnetoelectrically impermeable (Case 1), magnetically impermeable and electrically permeable (Case 2), magnetically permeable and electrically impermeable (Case 3) and magnetoelectrically permeable (Case 4), are adopted separately. The dynamic field intensity factors and energy release rates are derived. The effects of loading combinations and crack configurations especially for the former on the dynamic response are examined according to energy release rate criterion. The numerical results show that, among others, a negative magnetic (or electrical) loading is generally prone to inhibit the crack extension rather than a positive one for a magnetically (or electrically) impermeable interfacial crack. Results presented in this paper should have potential applications to the design of multilayered magnetoelectroelastic structures. (C) 2009 Elsevier Ltd. All rights reserved.

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