摘要
研究了同时处于机械与电学载荷之下的压电陶瓷柱体表面裂纹前缘的应力场和电位移场 .
In this paper the field distributions of stress and electric displacement near the surface cut border on a piezoelectric ceramics cylinder,which is located in a longitudinal electric field and subjected to a couple of torsional moments simultaneously,are investigated.The original problem is at first considered as such a model a piezoelectric half plane with an edge crack under condition of antiplane deformation,then two sets of dual integral equations from the corresponding boundary conditions are sloved,and the stress intensity factor,the electric displacement intensity factor of this problem are obtained analytically.The characteristic 1/r singular behaviors of stress and electric displacement components in the vicinty of the cut and the obvious coupling effect between mechanical and electric variables are discussed finally.
出处
《商丘师范学院学报》
CAS
2000年第4期36-38,共3页
Journal of Shangqiu Normal University
关键词
表面裂纹
应力场
压电陶瓷柱体
电位移场
piezoelectic ceramics
surface crack
coupling effect between mechanics and electricity
stress intensity factor
electric displacement intensity factor
