Dynamic Antiplane Behavior On Two Dissimilar Piezoelectric Media With An Asymmetric Interfacial Circular Cavity

Piezoelectric material, due to its unique properties of electromechanical coupling,hashad broad prospects for application as a new kind of intelligent materials in diverse areas suchas national defense construction, machinery, and other industries. Mainly because of its use assensitive components, it has also made a crucial influence on the application of the crack,round hole, inclusion and other kinds of defects of the materials. Research of dynamics ofthe piezoelectric material of all kinds of defects including round hole, cracks and non-circularcavity has been received wide attention of scholars both home and abroad. Based on themodel of two dissimilar piezoelectric material with circular hole on its interface with thecondition of he dynamic stress concentration factor in the circular holes around beinggiven,the paper aimed at solving dynamics antiplane problems.Firstly,"Cut" the model into two independent half-space, and establish the Greenfunction that applicable to the model respectively, and solve out the specific expression in theform of the Green’s function through the interface boundary conditions. In order to make thedisplacement field and the electric field of the upper and lower half-space be In line with thecontinuity of the boundary conditions in the introduction of additional external force lines aswell as the external electric field. Which fit the segregated half-space together, and introducethe first kind of Fredholm trapezoid formula definite solution of the integral equation, anddirectly approach them by numerical integration method with trapezoidal formula, then solvedout the numerical solution. Eventually given the analytic expressions of the dynamic stressconcentration factor surround a circular cavity, analyze the impact of solution on the dynamicstress concentration factor in different conditions such as different center position, thematerial parameters, the incident wave numbers of with some concrete examples, compare thepartial results of this paper to that in the literature,in order to determine the results’ accuracyand applicability...