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The simulation of a short fibre reinforced structure by means of the FEMrequires the knowledge of the material behaviour at every Gauss point. In orderto obtain such information, a representative volume element (RVE) containingunidirectional short fibres is analysed in the presented work. The findings areused to assess the applicability of several hyperelastic models describingtransversal isotropic materials under consideration of large deformations. Asthe RVE's average response represents the homogenised behaviour at amacroscopic material point, the material models' parameters can be identifiedby fitting them to stress-strain curves obtained from simulations with the RVE.The application of periodic boundary conditions to the RVE in tensorial formenables a simple access to consider tilted fibres and catch the anisotropyinduced by the fibres. The comparison of the calibrated material model with theRVE allows the assessment of the material model's applicability and quality.Both the modelling and the calculations are carried out with the commercial FEMsoftware ABAQUS.

Evaluation of hyperelastic models for unidirectional short fibre  reinforced materials using a representative volume element with refined  boundary conditions