A Time Domain BEM For Transient Dynamic Straight Crack In Piezoelectric Solids
Free (open access)
219 - 230
Peng Zhao & Taiyan Qin
A singular time-domain boundary element method for transient elastodynamic crack analysis in two-dimensional piezoelectric solids is presented in this paper. A finite straight crack in infinite piezoelectric solids under impacted loading is investigated. A convolution quadrature formula is applied for temporal discretization, while the Gauss-Chebyshev method is adopted for the spatial integration. By use of Laplace transform, time domain Green’s functions for the infinite plane are split into singular plus regular terms, the singular ones coinciding with the static Green’s function. Numerical examples are presented to show the accuracy of this method, and then the contribution of the piezoelectric effect on the variation of dynamic stress intensity factors is discussed. Keywords: piezoelectric solids, dynamic crack analysis, dynamic intensity factors.
piezoelectric solids, dynamic crack analysis, dynamic intensity factors