Abstract：Abstract: In order to research the effect of rifle twist angle on projectile engraving process of a large caliber gun, the numerical models for projectile engraving process under modular charge has been proposed based on smoothed particle hydrodynamics. The displacement, velocity, acceleration, resistance force and moment of projectile were obtained by simulations. The effect of twist angle on resistance force and driving moment were analyzed. The deformation process, equivalent stress, equivalent plastic strain, temperature and damage variable distribution of rotating band are obtained by numerical simulation. The frequency distribution of particles was get by particular variables such as equivalent stress, stress triaxiality, Lode parameter, equivalent plastic strain, temperature and damage variable, and the results show that large plastic deformation occurrences. By developing a new post program, the field variables distribution on specified sections were get and analyzed, the effects of initial twist angle on engraving process were obtained.
郭俊行，刘琦，丁宏民，徐坚，孙玉杰. 基于光滑粒子法的某大口径火炮不同膛线弹丸挤进过程研究[J]. 振动与冲击, 2021, 40(24): 75-81.
GUO Junhang，LIU Qi，DING Hongmin，XU Jian，SUN Yujie. A study on rotating band engraving process for large caliber gun projectile with different rifles. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(24): 75-81.
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