Simulation modeling and analysis of rigid shell ejection mechanism under different working conditions

DOI:	10.11809/bqzbgcxb2023.09.023
Keywords:	automatic weapon; shell throwing mechanism; overlap amount; failure rate; cartridge case axis
Abstract:	In order to study the action reliability of the automatic rifle shell throwing mechanism, the causes of the jam fault are analyzed and studied. A simplified virtual prototype simulation model of the automatic weapon shell throwing mechanism is established by using Multibody dynamics analysis software. The effects of the superposition amount on the shell throwing process under the three random working conditions of charge temperature, sliding friction coefficient and air chamber impulse efficiency (air groove) are studied. The simulation results show that the change of charge temperature, sliding friction coefficient and air chamber impulse efficiency will cause the cartridge case to tilt and cause the cartridge case to jam. The model is verified by comparing the test jam failure rate with the simulation failure rate, which can provide a reference for the design of other air chamber weapons.
Published:	2023-09-28
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