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