Influence of Thermal Physical Properties on Muzzle Motion Parameters Under Heated Barrel Condition
Modern forms of warfare have posed increasingly higher requirements on the precision of small-caliber rapid-fire weapons,while the issue of shooting anomalies,resulting from elevated barrel temperature,is in existence all through.To handle the aforementioned issues,the muzzle motion behavior under heated barrel conditions was analyzed in this paper.Taking the 5.8 mm rifle as research object,a thermo-pressure coupled model of bullet-barrel interaction was constructed based on the nonlinear finite element method.Some tests were carried out to validate the correctness of the coupled model on bullet muzzle velocity and bullet soft-recovery.Based on this,the study summarized the impact of material thermos-physical properties on the muzzle motion state under heated barrel conditions.Specifically,the influence was analyzed from three distinct aspects,the ther-moplastic behavior of the bullet jacket,the thermo-elastic response of the barrel,and the thermal expansion char-acteristics of the barrel.The results show that the constructed model can be provided for the resolution of shoot-ing anomalies resulting from elevated barrel temperature and for the study of the mechanism of bullet/barrel in-teraction.
artillery,automatic weapons and ammunition engineeringinteraction between bullet and barrelmuzzle motionshooting accuracythermo-mechanical couple
万方数据
维普
