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Journal of Composite Materials
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Article

A Hyperelastic Approach for Composite Reinforcement Large Deformation Analysis

Y. Aimène1, E. Vidal-Sallé1, B. Hagège2, F. Sidoroff3, and P. Boisse1*

1 Université de Lyon, INSA-Lyon, France
2 UTC, Laboratoire Roberval, Compiègne, France
3 Université de Lyon, Ecole Centrale de Lyon, France

* To whom correspondence should be addressed. E-mail: philippe.boisse{at}insa-lyon.fr.


  Abstract

A hyperelastic constitutive model is developed for textile composite reinforcement at large strain. A potential is proposed, which is the addition of two tension and one shear energies. The proposed potential is a function of the right Cauchy Green and structural tensor invariants whose choice corresponds to textile composite reinforcement mechanical behavior which exhibits weak elongations in the fiber directions and large angular variations in the fabric plane.

The model is implemented in a Vumat user routine of ABAQUS/Explicit. Some elementary tests are performed in order to identify the model and verify its validity. It is then used to simulate the hemispherical punch forming of balanced and unbalanced fabrics. A correct agreement is obtained with experimental forming processes.

First published on September 22, 2009
Journal of Composite Materials 2009, doi:10.1177/0021998309345348
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