dc.contributor.author 陈伟琪 zh_CN dc.date.accessioned 2013-12-12T02:08:47Z dc.date.available 2013-12-12T02:08:47Z dc.date.issued 2005 zh_CN dc.identifier.citation International Journal of Fracture,2005,131(3):231-246 zh_CN dc.identifier.issn 0376-9429 zh_CN dc.identifier.other ISI:000227473600002 zh_CN dc.identifier.uri https://dspace.xmu.edu.cn/handle/2288/60814 dc.description.abstract This paper considers the non-axisymmetric three-dimensional problem of a penny-shaped crack with permeable electric conditions imposed on the crack surfaces, subjected to a pair of point normal forces applied symmetrically with respect to the crack plane. The crack is embedded in an infinite transversely isotropic piezoelectric body with the crack face perpendicular to the axis of material symmetry. Applying the symmetry of the problem under consideration then leads to a mixed-mixed boundary value problem of a half-space, for which potential theory method is employed for the purpose of analysis. The cases of equal eigenvalues are also discussed. Although the treatment differs from that for an impermeable crack reported in literature, the resulting governing equation still has a familiar structure. For the case of a point force, exact expressions for the full-space electroelastic field are derived in terms of elementary functions with explicit stress and electric displacement intensity factors presented. The exact solution for a uniform loading is also given. zh_CN dc.language.iso en_US zh_CN dc.subject exact point force solution zh_CN dc.subject penny-shaped crack zh_CN dc.subject permeable crack zh_CN dc.subject piezoelectric medium zh_CN dc.subject potential theory zh_CN dc.title 3D point force solution for a permeable penny-shaped crack embedded in an infinite transversely isotropic piezoelectric medium zh_CN dc.type Article zh_CN
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