Multiscale damage analysis of laminated composite structures using generalized method of cells theory and Abaqus

Ivančević, Darko and Smojver, Ivica (2012) Multiscale damage analysis of laminated composite structures using generalized method of cells theory and Abaqus. = Multiscale damage analysis of laminated composite structures using generalized method of cells theory and Abaqus. In: 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012, 24.-28.06.2012., Venice; Italy.

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Abstract

The High Fidelity Generalized Method of Cells (HFGMC) has been implemented into Abaqus/Explicit in order to model damage processes in composite materials at the micromechanical level. The HFGMC model is implemented into the finite element code Abaqus via user material subroutine VUMAT. The result of the micromechanical procedure is the computation of strain concentration tensors, which relate the strain tensor on the macro-level to the strain tensor of each subcell. This enables calculation of the stress field within the unit cell, based on the constitutive behavior of each subcell. As the stress distribution is determined for the representative unit cells, calculation of failure criteria and constitutive response of the composite are performed on the micro-level. The most frequently used micromechanical failure criteria have been used in this work as well. Parametric analyses using different unit cell shapes and discretization refinement have been performed. Results of micromechanical analyses confirm significant dependence of failure criteria on unit cell type and refinement.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): ABAQUS; Cells; Cytology; Finite element method; Laminated composites; Tensors; Abaqus/explicit; Failure criteria; Generalized method of cells; High-fidelity generalized method of cells; Micro-mechanical analysis; Micro-mechanical modeling; Multi scale analysis; User material subroutine; Composite micromechanics
Subjects: TECHNICAL SCIENCE
Divisions: 1300 Department of Aeronautical Engineering > 1310 Chair of Aerodynamics
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (24.4.2015.)
Date Deposited: 24 Apr 2015 12:19
Last Modified: 24 Apr 2015 12:19
URI: http://repozitorij.fsb.hr/id/eprint/3982

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