Abstract
We employ domain decomposition to 2D systems representing concrete-like materials by describing the material across multiple scales with different models and meshes. This enables us to perform failure mechanics using nonlinear material models such as the gradient-enhanced damage (GD) model. Early results of classical FETI show that heterogeneous materials combined with the GD model necessitates new developments in preconditioners for solving the interface problem iteratively. Alternatively, recent advancements in parallel direct solvers and the ubiquity of computer memory enables solving domain decomposition problems through the fully assembled matrix. Speed and memory usage of various solvers will be presented.
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Everdij, F.P.X., Lloberas-Valls, O., Simone, A., Rixen, D.J., Sluys, L.J. (2016). Domain Decomposition and Parallel Direct Solvers as an Adaptive Multiscale Strategy for Damage Simulation in Quasi-Brittle Materials. In: Dickopf, T., Gander, M., Halpern, L., Krause, R., Pavarino, L. (eds) Domain Decomposition Methods in Science and Engineering XXII. Lecture Notes in Computational Science and Engineering, vol 104. Springer, Cham. https://doi.org/10.1007/978-3-319-18827-0_18
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DOI: https://doi.org/10.1007/978-3-319-18827-0_18
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