Low Velocity Impact Responses of GLARE Hybrid Laminates Based on Simplified Finite Element Model

Abstract

This paper aims to explore the low velocity impact response of glass fiber composite/aluminum hybrid laminates (GLAREs). Puck’s criterion with an efficient algorithm and damage evolution laws based on equivalent strain are used for intralaminar damage models, and the interface delamination is simulated by the bilinear cohesive model in ABAQUS, besides, the Johnson-Cook model is applied to describe the mechanical properties of aluminum layers. Numerical analysis is performed on GLAREs with different impact energy based on simplified finite element model in order to study the damage evolution behaviors of composite layers and interface. In addition, the energy dissipation mechanisms due to damage of composite layers including fiber tension, fiber compression, matrix tension and matrix compression, interface delamination and plastic deformation of aluminum layers are also explored. Meanwhile, the simulation results with simplified model have a good agreement with the experimental results.