Study of mechanical properties of cylinder under transient multi-physical field coupling conditions

Abstract The use of lightweight metal cylinders is great significance to artillery weapon systems in terms significant mass reduction, service life extension, power consumption reduction and operational effectiveness. Based on the load conditions provided by classical internal ballistic theory, a high precision finite element model solved explicit integration algorithm with central difference. results show that maximum stress thin-walled cylinder increases linearly increase initial clearance, while extraction force first then decreases, influence temperature cannot be ignored. Therefore, design gap between thick-walled should designed ensure does not exceed permissible meet minimum force, choosing correct timing can effectively reduce force.