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H. E. Pettermann, J. Broger, J. Gager:
"Nonlinear Predictions in Laminated Composites and Structures";
Vortrag: 11th World Congress on Compuational Mechanics (WCCM XI), Barcelona; 20.07.2014 - 25.07.2014; in: "Proceedings of the 11th World Congress on Compuational Mechanics", E. Oñate, X. Oliver, A. Huerta (Hrg.); CIMNE, Barcelona (2014), ISBN: 978-84-942844-7-2; S. 3727 - 3733.

The nonlinear mechanical response of laminated composite structrures is investigated by the Finite Element Method. Each ply is modeled by its own layer of shell elements and these layers are connected by cohesive elements. The latter allow for damage and failure of the interface between the plies. The constitutive behavior of the unidirectional reinforced plies is modeled by an in-house material law developed earlier. It accounts for progressive damage and failure as well as plasticity effects and has been implemented for implicit solution schemes. The model is converted to suit explicit dynamic Finite Element Methods and is applied to an Open Hole Tension test
scenario. Quasi-static predictions are carried out for a quasi-isotropic laminate, for which both progressive ply and progressive interface damage is considered simultaneously.