Open Access

ARTICLE

Unit-Cell Model of 2/2-Twill Woven Fabric Composites for Multi-Scale Analysis

by Y. W. Kwon¹, K. Roach¹

1 Mechanical Engineering Department, 700 Dyer Road, Naval Postgraduate School, Monterey, California 93943

Computer Modeling in Engineering & Sciences 2004, 5(1), 63-72. https://doi.org/10.3970/cmes.2004.005.063

Abstract

A micromechanical unit-cell model was developed for 2/2-twill woven fabric composites so that the model could be implemented for the multi-scale micro/macro-mechanical analysis of 2/2-twill composite structures. The unit-cell model can compute effective material properties of a 2/2-twill composite and decompose the effective stresses (strains) of the woven fabric composite into the stresses (strains) of the tows. When this unit-cell module is incorporated into the multi-scale analysis by combining with other modules developed previously, the residual strength and stiffness of a laminated structure made of 2/2-twill woven fabric composites can be predicted along with damage progression in the structure. Damage is described at the basic material units of the composite structure, the fibers and matrix. Comparing the predicted results to other available data in open literature validated the developed unit-cell model and the multi-scale analysis.

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