CONCURRENT MULTI-SCALE MODELING OF COMPOSITES UNDER HIGH RATES OF LOADING

CONCURRENT MULTI-SCALE MODELING OF COMPOSITES UNDER HIGH RATES OF LOADING

May, Michael; Hiermaier, Stefan

Full Article:

A computationally efficient concurrent multi-scale methodology for modeling com-posites under high rates of loading is proposed. The physically based model relies on micro-mechanical properties of the constituents only. Initially, the material response is calculated based on homogenized linear-elastic, orthotropic material properties at the laminate scale which are calculated using the rule of mixtures. A modified Hashin-Rotem criterion is then used to identify the switch to a more accurate micromechanical analysis based on the gener-alized method of cells (GMC). The methodology is verified using one-element tests on UD-composites and validated against high-velocity impact experiments. Both, the correlation with the experiments and the computational efficiency are good.

A computationally efficient concurrent multi-scale methodology for modeling com-posites under high rates of loading is proposed. The physically based model relies on micro-mechanical properties of the constituents only. Initially, the material response is calculated based on homogenized linear-elastic, orthotropic material properties at the laminate scale which are calculated using the rule of mixtures. A modified Hashin-Rotem criterion is then used to identify the switch to a more accurate micromechanical analysis based on the gener-alized method of cells (GMC). The methodology is verified using one-element tests on UD-composites and validated against high-velocity impact experiments. Both, the correlation with the experiments and the computational efficiency are good.

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DOI: 10.5151/meceng-wccm2012-18316

Referências bibliográficas

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Como citar:

May, Michael; Hiermaier, Stefan; "CONCURRENT MULTI-SCALE MODELING OF COMPOSITES UNDER HIGH RATES OF LOADING", p-1245-1257. In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 23580828, DOI 10.5151/meceng-wccm2012-18316