Analysis of engraving process of projectile based on the coupling of FEM and SPH
Based on the coupling algorithm of finite element method (FEM) and smoothed particle hydrodynamics method (SPH), the dynamic model of projectile-barrel coupling system was established. The numerical simulation of engraving process of projectile of heavy caliber gun was performed, which made up for the deficiencies of FEM which couldn’t simulate the large deformation of bearing band effectively and simulated the plastic flow of bearing band in the engraving process of projectile, and based on which, the stress and strain changing regular pattern of bearing band was intensively studied. The influences of initial loading angle of projectile, gap between tube and projectile and projectile not arriving the assign position on dynamic responses of projectile in engraving process were analyzed. As a result of comparing, the deformations of bearing bend in simulation and live firing have well consistency.
Northwest Institute of Mechanical & Electrical Engineering, Xianyang 712099, China
Abstract：Based on the coupling algorithm of finite element method (FEM) and smoothed particle hydrodynamics method (SPH), the dynamic model of projectile-barrel coupling system was established. The numerical simulation of engraving process of projectile of heavy caliber gun was performed, which made up for the deficiencies of FEM which couldn’t simulate the large deformation of bearing band effectively and simulated the plastic flow of bearing band in the engraving process of projectile, and based on which, the stress and strain changing regular pattern of bearing band was intensively studied. The influences of initial loading angle of projectile, gap between tube and projectile and projectile not arriving the assign position on dynamic responses of projectile in engraving process were analyzed. As a result of comparing, the deformations of bearing bend in simulation and live firing have well consistency.
马明迪，崔万善，曾志银，宁变芳，鲁玉祥. 基于有限元与光滑粒子耦合的弹丸挤进过程分析[J]. 振动与冲击, 2015, 34(6): 146-150.
MA Ming-di，CUI Wan-shan，ZENG Zhi-yin，NING Bian-fang，LU Yu-xiang. Analysis of engraving process of projectile based on the coupling of FEM and SPH. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(6): 146-150.
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