A Study on the Failure of Safety and Arming Device at the Muzzle

Through virtual design and virtual test, dynamic characteristics of safety and arming device with transient and high acceleration are studied. Based on the test result of acceleration in bore and the FEA method, a FEA model is built up and ballistic environment is input. Simulation result indicated that the intention of safety in arming device is deficient. With the clock mechanism movement in bore, the failure of safety and arming device is investigated. The result indicates that the transient and high acceleration hear the bore, acting on the radial direction of the munition is the main reason that causes the failure of safety and arming device.