Compos.Sci.Engng. 128, 131-137, 2016
M. Schwab1, M. Todt1, M. Wolfahrt2, H.E. Pettermann1
1Institute of Lightweight Design and Structural
TU Wien, Vienna, Austria
2Polymer Competence Center Leoben,
A shell element based modelling strategy for simulating impact on fabric
reinforced laminated composites within the framework of the Finite Element
Method is presented.
Thereby, each ply of the laminate is represented by its own layer of shell
elements. The interfaces in-between are discretised by cohesive zone elements.
Material nonlinearities within plies, i.e. fibre rupture, matrix cracking and
plasticity-like effects, and interfaces, i.e. delamination, are accounted for
by appropriate constitutive laws.
Impact simulations of a rectangular laminated composite plate with
quasi-isotropic layup in a drop tower test setup are conducted.
The predictions are based on material parameters partly from corresponding
material data sheets and partly estimated from the literature.
Thus, no inverse model calibration is applied. The acquired simulation results
are validated with accompanying experiments.
The predicted spatial distribution of ply damage and delaminations, as well as
the associated energy absorption agree very well with the experimental results.
The approach shows excellent performance in terms of computational efficiency
such that simulations of the impact behaviour of structural composite
components become feasible.