Mechanical characteristics of the braking cylindrical shells of missile ejector under axial impact

For impact mechanical characteristics of the linear thickness braking cylindrical shells, a concept of equivalent velocity was proposed. Based on the energy equivalent principle of subsections under equivalent thickness and eguivalent velocity condition, an impact mechanical model of linear thickness braking cylindrical shells, which takes into account the strain hardening and strain rate effect of structural material, was built. The wrinkle creation forms, compress stroke and mechanical characteristics of the braking cylindrical shells of missile ejector under axial impact has been studied by means of theory analysis, FEM and experiment. Three methods get identical results, which verifies the correctness of the model. The theory model of linear thickness braking cylindrical shells can be used in the initial engineering design and experiment planning of the braking cylindrical shells and in the launching dynamics analysis of the weapon system.