Abstract
A bilayer beam model constructed using two-phase piezoelectric materials is developed to study the fracture behavior of interfacial cracks under mechanical/electrical loading, in which the effects of electrostatic traction on the interfacial crack faces and the piezoelectricity of the materials are taken into account. An analytical solution is derived, and the energy release rate of the interfacial cracks is obtained. The electrostatic traction on the crack faces and the interfacial crack behavior are successfully simulated using the finite element method integrated with an iterative approach. The numerical and analytical solutions are compared and are found to agree with each other.
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