STRENGTH ANALYSIS OF REINFORCED AND UNREINFORCED BARRELS USED IN SMALL ARMS OF SELECTED CALIBERS. PART II - STRENGTH CALCULATIONS OF UNREINFORCED BARRELS

The aim of this work was to design a sports submachine gun based on a review of current design solutions used in this type of weapon and to create preliminary technical assumptions. The scope of work included the selection of a cartridge for the submachine gun, the selection of the barrel length, the calculation of the outer diameter of the barrel, the selection of the mass of the bolt and the return spring as well as the calculation of the bolt kinematics, the creation of a functional model using the additive technique, checking the correct operation of the weapon's mechanisms and indicating possible design improvements. Part II includes Strength calculations of unreinforced barrels for all tested barrels.Keywords: Heydenreich method, internal ballistics, reinforced barrel, durability, simulationAbstract: The aim of this work was to design a sports submachine gun based on a review of current design solutions used in this type of weapon and to create preliminary technical assumptions. The scope of work included the selection of a cartridge for the submachine gun, the selection of the barrel length, the calculation of the outer diameter of the barrel, the selection of the mass of the bolt and the return spring as well as the calculation of the bolt kinematics, the creation of a functional model using the additive technique, checking the correct operation of the weapon's mechanisms and indicating possible design improvements. Part II includes Strength calculations of unreinforced barrels for all tested barrels.Keywords: Heydenreich method, internal ballistics, reinforced barrel, durability, simulationThe aim of this work was to design a sports submachine gun based on a review of current design solutions used in this type of weapon and to create preliminary technical assump-tions. The scope of work included the selec-tion of a cartridge for the submachine gun, the selection of the barrel length, the calcula-tion of the outer diameter of the barrel, the selection of the mass of the bolt and the re-turn spring as well as the calculation of the bolt kinematics, the creation of a functional model using the additive technique, checking the correct operation of the weapon's mecha-nisms and indicating possible design im-provements. Part II includes Strength calcula-tions of unreinforced barrels for all tested barrels.