Towards Hierarchical Modeling of Damage in Composite Structures
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This paper describes the ongoing development of a hierarchical finite element modeling methodology for the simulation of progressive damage in fiber-reinforced composite laminates. Damage is modeled within the context of continuum damage mechanics and is applied to the homogenized material description of each material ply. The damage evolution equations are solved at the Gaussian integration points within each material ply, thus explicitly accounting for damage variation through the thickness of each material ply. The hierarchical formulation is ultimately intended to permit the mathematical model type and level of discretization to adaptively evolve in response to the increase in behavioral complexity that results from localized or wide-spread damage progression. Copyright 2004 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
