Abstract: In this paper, the numerical simulation of progressive damage is carried out for the cylinder with metal liner and the optimization is carried out according to the burst results of the cylinder with different layer schemes. The cylinder model was established in ABAQUS software, the Hashin failure criterion and Tan degradation model were selected to put forward the progressive damage theory, and the USDFLD subroutine was written to realize the prediction process of progressive damage of composite model, and the accuracy of the damage theory was verified by NOL ring. The prediction of burst results and progressive damage analysis were carried out for cylinders with different layers modes. The tensile failure results of NOL ring show that the error between the simulated failure stress and the actual value is 1.9%, which proves that the theory of progressive damage is feasible for the circular winding model. The prediction results of cylinder burst show that the predicted pressure and failure position are close to the real test results. The comparison of burst results of cylinders with different layers shows that the angle and number of layers have a great influence on the bursting pressure and position of cylinders. The results of progressive damage analysis show that the damage of composite cylinder is a process from matrix cracking to delamination defect, which consequently leads to fiber fracture and cylinder burst.

Key words: composite cylinder, numerical simulation, progressive damage analysis