Print Email Facebook Twitter Multiscale analysis of heterogeneous brittle materials using domain decomposition techniques Title Multiscale analysis of heterogeneous brittle materials using domain decomposition techniques Author Lloberas Valls, O. Rixen, D.J. Simone, A. Sluys, L.J. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2010-05-16 Abstract In this contribution we present a multiscale framework for the analysis of brittle materials based on domain decomposition approaches. In particular, the FETI (Finite Element Tearing and Interconnecting) [1] method is selected to solve the decomposed structure. We start our analysis at a coarse level were effective properties are assigned to the homogeneous bulk. Using indicators, based on the constitutive model, we predict the moment at which non-linearities start int a certain domain (i.e. growth and propagation of damage). A zoom-in technique based on mesh refinement is applied to these domains and the underlying mesostructure is accounted for during the non-linear regime. The methodology proves to be a valuable application of the existing divide and conquer approaches for those materials that show localized failure phenomena. In these situations, computations need to be carried at a higher resolution level at places where the main non-linearities appear in order to accurately capture the global response. To reference this document use: http://resolver.tudelft.nl/uuid:56aabf9d-d787-4caf-8178-a45c086a2343 Publisher ECCM Source ECCM 2010: IV European Conference on Computational Mechanics, Paris, France, 16-21 May 2010 Part of collection Institutional Repository Document type conference paper Rights (c) 2010 The Author(s) Files PDF 261903.pdf 128.85 KB Close viewer /islandora/object/uuid:56aabf9d-d787-4caf-8178-a45c086a2343/datastream/OBJ/view