AN ANALYTICAL SOLUTION FOR PROBLEM OF ANTIPLANE KINK CRACKS IN PIEZOELECTRIC MATERIALS
The problem of anti-place kink cracks in the piezoelectric materials is analyzed by using complex functions.The coupled filed and intensity factors of the branching crack tip are also studied.Using energy release rate and J integral for the branching crack tip,the main crack growth path is considered.Research has shown that the deflection angle of anti-place crack propagation in the piezoelectric materials is zero,in other words 0.It is proved theoretically that the assumptions and corresponding conclusions of piezoelectric materials plane crack-growth by a straight line are correct in earlier period.