Failure Analysis of Carbon Fibre Reinforced Composite Material Barrel

Based on the CDM theory, the elastic-plastic isotropic and anisotropic damage model are proposed to predict the progressive failure properties of the carbon fiber reinforced composite material barrel during gun firing. Internal thermodynamically irreversible damage variables were defined in order to quantify damage concentration associated with each possible failure mode and predict the gradual stiffness reduction during the damage process. A 3D finite element technique is adopted to perform the progressive failure analysis. The material model has been implemented into ABAQUS explicit finite element code within solid elements and the computed results have proved to be capable of reproducing experimental results with good accuracy in terms of static responses, energy dissipation and extent of damage. This work provides a progressive understanding of the damage initiation and propagation behaviors of composite laminated cylindrical structures above.