Hot spot Analysis in complex composite material structures

Journal article, 2019

In this paper, failure initiation in composite structures due to high out-of-plane load components is predicted.
The predictions are based on finite element models built with shell elements, intended for global models. The full
3D stress state is estimated through stress recovery by the extended 2D FEM approach. Failure initiation is
predicted with state of the art failure criteria for transversely isotropic composite materials. The approach is
validated for a range of geometries with different modelling resolutions. Finally, the methodology is verified on a
complex composite structure. With the proposed approach, using shell elements, efficient modelling strategies of
large structures can be pursued using hot spot analyses to identify critical locations.