THE INTERACTION BETWEEN A SCREW DISLOCATION AND A CIRCULAR PIEZOELECTRIC INHOMOGENEITY WITH A CRACK
The interaction between a screw dislocation and a circular piezoelectric inhomogeneity with a crack is dealt with in this paper. The crack expands both along the interface and penetrating through the interface Utilizing the conformal mapping technique, the closed-form solutions are derived for complex potentials and stress fields due to a screw dislocation located near the crack. The image force and the stress intensity factor on the crack tips are also calculated. The influence of the orientation of the dislocation and the morphology of the crack as well as the material dissimilarity on the shielding effect and the image force is discussed in detail.
piezoelectric material screw dislocation crack
Hao-peng SONG Cun-fa GAO
State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China
国际会议
深圳
英文
378-381
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）