A shell element formulation for the simulation of propagating delamination and through-thickness cracks
Paper i proceeding, 2014

In this contribution, we propose an enhanced shell element formulation for mesh independent FE simulation of through-thickness and multiple delamination crackp ropagation in orthotropic laminates, cf. Figure 1 for an illustration of the possibilities of using this shell element (multiple delaminations). The ambition is to offer a finite element tool to be used for larger component simulations, without having to resort to explicit resolution of each laminae in the laminated structure by three dimensional solid elements or stacked shell elements. The formulation involves three different types of displacement enrichments to make sure that each delaminated subsection which is also cut by a through thickness crack can be individually represented without (unphysical) kinematical couplings to the surrounding structure in the laminate. So far, the proposed modelling framework has been validated against pure deformation modes, in terms of either multiple delaminations or a through-thickness crack.

Shell elements

XFEM

Multiple delaminations

Through-thickness cracks

Författare

Jim Brouzoulis

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Martin Fagerström

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Erik Svenning

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Proceedings of 16th European Conference on Composite Materials - ECCM16

(8p)-

Modelling And Testing for Improved Safety of key composite StructurEs inalternatively powered vehicles (MATISSE)

Europeiska kommissionen (FP7), 2012-10-01 -- 2015-09-30.

Ämneskategorier

Maskinteknik

Teknisk mekanik

Styrkeområden

Transport

Materialvetenskap

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Skapat

2017-10-07