Electroelastic Coupled-Wave Scattering and Dynamic Stress Concentration of Piezoceramics Containing Regular N-Sided Holes

In this paper, the calculation method of dynamic stress concentration around piezoelectric ceramics containing regular n-sided holes under action electroelastic coupling wave was studied, and it applied to promising barium calcium zirconate titanate material. First, governing equations were decomposed by using auxiliary function method, solution forms elastic field electric obtained expansion method. Then, triangular boundary simplified a circular mapping function, corresponding modal coefficients determined according conditions. Finally, stress-concentration factor calculated characterize concentration. We performed numerical simulations with correlation coefficient (1 − x)[(Ba0.94Ca0.06) (Ti0.92Sn0.08)]-xSm2O3-0.06 mol% GeO2 (abbreviated as x)BCTS-xSm-0.06G). The results show that incident number, properties, shape parameters hole, deflection angle have great influence on defect, some significant laws are summarized through analysis.