文献类型：期刊文献

英文题名：DISLOCATIONS, IMPERFECT INTERFACES AND INTERFACE CRACKS IN ANISOTROPIC ELASTICITY FOR QUASICRYSTALS

作者：Wang, Xu[1];Schiavone, Peter[2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Univ Alberta, Dept Mech Engn, Edmonton, AB T6G 2G8, Canada

年份：2013

卷号：1

期号：1

起止页码：1

外文期刊名：MATHEMATICS AND MECHANICS OF COMPLEX SYSTEMS

收录：WOS:【ESCI(收录号:WOS:000410181400001)】；

基金：Wang W. was supported by Innovation Program of Shanghai Municipal Education Commission (No. 12ZZ058). Schiavone acknowledges the support of the Natural Sciences and Engineering Research Council of Canada.

语种：英文

外文关键词：quasicrystal; anisotropic elasticity; Stroh formalism; dislocation; interface crack

摘要：We derive the detailed structures of the 6 x 6 matrices Ni and N-i((-i)) (i = 1, 2, 3) in the Stroh formalism of anisotropic elasticity for quasicrystals. All six matrices are expressed explicitly in terms of the sixty-six reduced elastic compliances. The Green's functions for bi-quasicrystals are also obtained. Next, we derive compliant and stiff interface models in anisotropic quasicrystalline bimaterials. It is observed that the phonon normal traction is always continuous across the stiff interface. Finally we present the asymptotic fields associated with a tractionfree, semi-infinite interface crack in anisotropic quasicrystalline bimaterials and solve the collinear interface crack problem. The interface crack-tip field consists of three two-dimensional oscillatory singularities which are evaluated via the introduction of three complex stress intensity factors.