Compos.Sci.Technol. 72(10), 1090-1095, 2012
T. Flatscher1,2, M. Wolfahrt2,3, G. Pinter4, H.E. Pettermann1
1Institute of Lightweight Design and Structural
TU Wien, Vienna, Austria
2Polymer Competence Center Leoben,
3FACC AG, Ried, Austria
4Institute for Material Science and Testing of Plastics,
University of Leoben, Leoben, Austria
Laminated composites with various layups of unidirectional carbon fiber
reinforced epoxy are investigated by numerical modeling and experimental
Open hole tension configurations are studied with special considerations of the
non-linear behavior of the plies.
Computational predictions are based on an anisotropic constitutive material law
which includes plasticity and damage, the latter comprise hardening as well as
Experimental evaluations include a 3D image correlation photogrammetry system
for capturing the strain fields of the sample surfaces.
The open hole tension configuration represents a structural problem, in which the stress distribution is highly non-uniform. The measured and the predicted strain fields as well as the localization zones show very good agreement which indicates that the governing intra-ply mechanisms are captured well by the constitutive law.