Abstract:For improving the calculation precision of piezoelectric materials containing crack

the virtual crack closure technology were introduced into the background grid of element-free Galerkin method. Based on the theory of enriched element-free method

electromechanical virtual crack closure technique was put forward. The new approach well simulated the singularity at the crack tip

simplified the solving process

improved the calculation accuracy. The influence of the different number of gauss points and different length of crack on the calculation precision of the intensity factor was discussed. Compared with the analytical solution and numerical results of electromechanical-coupling virtual crack closure technique based on finite element method. Numerical example results illustrated that this method is feasible.