Effects of Cylindrical Structure on Bullet In-Bore Action Process

Abstract To explore the effects of bullet cylindrical difference on in-bore dynamic engraving resistance and muzzle swing, a finite element model bullet-barrel interaction is built. With proposed model, real bore bottom pressure curves are obtained through experiments. In numerical simulation, motion processes two all-copper bullets with different structures reproduced according to curves, so as qualitatively analyze relationship between motion. The association curve inflection points identified, forces found exhibit roughly same trend. addition, there an abnormal phenomenon that shorter length should have larger force. This due shape process, well swing caused by straight slotted length. findings this study can provide basis for design internal ballistics further analysis external ballistics.