کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
499155 | 863029 | 2009 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: On two hypersingular time-domain BEM for dynamic crack analysis in 2D anisotropic elastic solids On two hypersingular time-domain BEM for dynamic crack analysis in 2D anisotropic elastic solids](/preview/png/499155.png)
This paper presents a comparison of two hypersingular time-domain boundary element methods for transient dynamic crack analysis in two-dimensional, homogeneous, anisotropic and linear elastic solids. Stationary cracks in infinite and finite elastic solids of general anisotropy under impact loading are investigated. A combination of the classical displacement boundary integral equations and the hypersingular traction boundary integral equations is applied. Two different numerical solution procedures are developed to solve the time-domain boundary integral equations. The spatial discretization is performed by a Galerkin-method in both solution procedures. A collocation method is adopted for the temporal discretization in the first solution procedure, while a convolution quadrature is implemented for the temporal discretization in the second procedure. An explicit time-stepping scheme is developed to compute the unknown boundary data and the crack-opening-displacements. Numerical examples for the dynamic stress intensity factors are presented and discussed.
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 198, Issues 33–36, 1 July 2009, Pages 2812–2824