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Development of an elastic‐plastic constitutive model for highly anisotropic materials
Author(s) -
Haasemann Georg,
Lux Christian,
Ulbricht Volker
Publication year - 2010
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201010197
Subject(s) - homogenization (climate) , anisotropy , materials science , composite material , constitutive equation , computer science , structural engineering , physics , engineering , finite element method , optics , biodiversity , ecology , biology
Abstract Homogenization methods are used to obtain the effective properties of highly anisotropic materials such like textile reinforced composites. The state of the art is the utilization of this method to compute elastic properties. But the consideration of inelastic and anisotropic properties requires the application of more advanced techniques such as the FE 2 ‐method. Due to the high numerical effort induced by this approach, this paper presents a new method to evaluate inelastic properties of an heterogeneous elastic‐plastic material. The parameters describing the inelastic properties require a modification of the return mapping algorithm which is used for the numerical implementation. Finally, the verification shows the accuracy of the results obtained with this new homogenization method. (© 2010 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)