THERMOELECTROELASTIC GREENS-FUNCTION FOR A PIEZOELECTRIC PLATE CONTAINING AN ELLIPTIC HOLE

Using Stroh's formalism and conformal mapping, Green's functions are o btained in closed-form for an infinite thermopiezoelectric plate with an elliptic hole induced by temperature discontinuity. The Green's fun ction satisfies free-traction-charge as well as thermal-insulated cond itions along the hole boundary. Based on the Green's function, a syste m of singular integral equations for the unknown temperature discontin uity defined on crack faces is developed to study the interaction betw een crack and elliptic hole. Numerical results are presented to elucid ate the effects of crack orientation on stress and electric displaceme nt (SED) intensity factors and to illustrate the application of the pr oposed Green's function. (C) 1998 Elsevier Science Ltd. All rights res erved.