Simulation analysis for loading of naval gun test projectile with differential clay buffer
LIU Xinyun1, MA Jisheng1, HOU Jian2
1. Department of Artillery Engineering, Army Engineering University, Shijiazhuang 050001, China；
2. Department of Ordnance Engineering, Naval University of Engineering, Wuhan 430033, China
Abstract：Because the structure of naval gun test projectile is different from that of the real projectile, its rebound speed is excessively high when loading in bore to cause the fracture of related parts and latch failure. Here, a differential clay buffer was designed to absorb excessive kinetic energy to ensure the reliability of the test projectile. In order to evaluate the buffering efficiency of differential mastic buffer on the test projectile and analyze the projectile loading motion law, a simulation analysis method combining buffer fluid numerical analysis with computational fluid dynamics (CFD) and multi-body dynamic analysis (MBD) was proposed. The computation results showed that the proposed method can accurately compute and predict the buffer efficiency of the buffer, and the buffer meets design technical requirements; in process of static pressure, multiple vortices are formed behind piston, while in process of impact, streamline is stable without vortices; the viscous impedance component increases firstly and then decreases with decrease in compression rate; the study can not only provide a theoretical support for application of clay buffer in naval gun test projectile, but also provide a new analysis method for studying clay buffer.
刘昕运1，马吉胜1，侯健2. 安装差动胶泥缓冲器的舰炮检验弹入膛仿真分析[J]. 振动与冲击, 2021, 40(7): 164-170.
LIU Xinyun1, MA Jisheng1, HOU Jian2. Simulation analysis for loading of naval gun test projectile with differential clay buffer. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(7): 164-170.
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