Fast Solution of 3D-Elasticity Problem of a Planar Crack of Arbitrary Shape
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Abstract
A planar crack of an arbitrary shape in a homogeneous elastic medium is considered. The problem is reduced to integral equation for the crack opening vector. Its numerical solution utilizes Gaussian approximating functions that drastically simplify construction of the matrix of a linear algebraic system of the discretized problem. For regular grids of approximating nodes, this matrix turns out to have the Teoplitz structure. It allows one to use the Fast Fourier Transform algorithms for calculation of the matrix-vector products in the process of iterative solution of the discretized problem. The method is applied to a crack bounded by the curve \({x^{2p}_{1} + x^{2p}_{2}\leq 1}\) for 0.2 ≤ p ≤ 4. The contribution of a crack to the overall effective elastic constants is calculated.
Keywords
Crack Fast Fourier Transform Effective elastic propertiesPreview
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References
- Golub, G., Van Loan, C., 1993. Matrix Computations, John Hopkins University Press.Google Scholar
- Kachanov, M., 1993. Elastic solids with many cracks and related problems. In: Hatchinson, J., Wu, T., (Eds), Advances in Appl Mech, v. 30, 259-445.Google Scholar
- Kanaun S.: Elastic problem for 3D-anisotropic medium with a crack. Appl Math Mech (PMM) 45, 361–370 (1981)Google Scholar
- Kanaun, S., Levin, V., 2008, Self-Consistent Methods for Composites, v. 1, Static Problems, Springer, SMIA, v 148.Google Scholar
- Maz’ya, V., Schmidt, G., 2007, Approximate Approximation, AMS, Mathematical Surveys and Monographs, v. 141.Google Scholar
- Press W., Flannery B., Teukolsky S., Wetterling W.: Numerical Recipes in FORTRAN: The Art of Scientific Computing. Cambridge University Press, Cambridge (1992)Google Scholar