Blast Resistance of Hybrid Elastomeric Composite Panels

Abstract

In this study, a finite element model was developed to understand the deformation and failure mechanisms of a multi-layered composite panel under blast. Fibre (E-glass fiber) and matrix (vinylester resin) damage and degradation of individual unidirectional composite laminas were modelled using the Hashin failure model. The delamination between laminas was modelled by a traction-separation cohesive law. A Polyurea layer was placed at the rear of the panel to study its effects on the damage evolution in the composite laminas, and was modelled using a Mooney-Rivlin constitutive law. The model-predicted deformation histories, fiber/matrix damage patterns, and inter-lamina delamination were compared between monolithic and composite panels. The model revealed that the Polyurea plays an important role in improving the panel’s performance.

Modeling and simulation on mechanical behavior of repaired bismaleimide resin matrix composite laminates considering different repairing processes

“…The prediction of damage propagation of adhesive layer in composite adhesive structure can be realized with the fracture mechanics method (Phuong et al, 2016).…”