Compos.Sci.Technol. 72(7), 806-812, 2012
J. Gager1,2, H.E. Pettermann2
1Polymer Competence Center Leoben,
2Institute of Lightweight Design and Structural Biomechanics,
TU Wien, Vienna, Austria
The paper presents a shell element based unit cell approach for numerical
homogenization of fiber reinforced textile composites.
The modeling strategy is set up within the framework of the Finite Element
Method with special emphasis on numerical efficiency, which becomes
particularly important in the perspective of non-linear implicit simulations.
A single layer of fabric is considered and the tows as well as the unreinforced
matrix pockets are discretized by shell elements which are coupled
appropriately allowing for delamination between the constituents.
The approach is discussed, and the linear as well as the geometrical non-linear
mechanical response of an example fabric is compared to a continuum based
discretization of the same fabric.
Additionally, simulations including delaminations are conducted.
The substantially improved numerical efficiency of the shell based approach is