华中科技大学学报（自然科学版）2016，Vol.44Issue(6)：57-62,6.DOI:10.13245/j.hust.160611
双相介质椭圆形孔洞及界面裂纹对SH波的散射
Scattering of SH waves in bi-material half space with elliptic cavity and interfacial crack
摘要
Abstract
Based on Green's function method and complex function method with conformal mapping method,the scattering problem of shear horizontal (SH) waves by elliptic cavity and interfacial crack in a bi-material half space were investigated.And the distributions of the dynamic stress concentration factor (DSCF) around elliptic cavity and dynamic stress intensity factor (DSIF) at the tip of interfacial crack were presented.Firstly,the theoretical model was divided into two right planes along the interface to study respectively.The plane wave field and scattering wave field of the elliptic cavity in right angle planes were constructed by using image method and conformal mapping method.Secondly,through the continuity conditions of stress and displacement on the vertical interface,the two right planes were combined into bi-material half space with interfacial crack by using conjunction method and crack dividing method.Finally,some examples were given to present the distributions of DSCF and DSIF under different conditions.Numerical results show that incident angel,incident wave number,materials parameters,crack length and some other factors are capable of effecting the distributions of DSCF and DSIF.关键词
水平剪切(SH)波/椭圆形孔洞/界面裂纹/保角映射/动应力集中系数/动应力强度因子Key words
shear horizontal (SH) waves/elliptic cavity/interfacial crack/conformal mapping/dynamic stress concentration factors (DSCF)/dynamic stress intensity factor (DSIF)分类
机械制造引用本文复制引用
丁晓浩,齐辉,张洋,杨军..双相介质椭圆形孔洞及界面裂纹对SH波的散射[J].华中科技大学学报（自然科学版）,2016,44(6):57-62,6.基金项目
黑龙江省自然科学基金资助项目(A201404). （A201404）
