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T. Ceglar, M. Schwab, H. E. Pettermann:
"DCB and ENF Multi-Scale Simulations";
Talk: 6th ECCOMAS Thematic Conference on the Mechanical Response of Composites: COMPOSITES 2017, Eindhoven; 09-20-2017 - 09-22-2017; in: "6th ECCOMAS Thematic Conference on the Mechanical Response of Composites: COMPOSITES 2017", J.J.C. Remmers, A. Turon (ed.); TU EIndhoven, (2017), 13 - 23.

Nonlinear Finite Element Method simulations of the delamination in fabric laminates with complex topology are carried out where material and interface nonlinearities are taken into account. A multi-scale embedding approach is presented which is capable to capture the nonlinear mechanisms while the computational effort is kept relatively low. The approach is used to simulate the response of Double Cantilever Beam tests and three point End Notch Flexure tests. Delamination is evaluated in terms of nonlinear load displacement curves, critical energy release rates, and dissipated energies. Besides the global response, local effects are investigated and the localized patterns of various nonlinear mechanisms are predicted. This way, detailed insight to the global delamination behavior as well as the locally involved mechanisms is obtained quantitatively.