Zhang Menghua, Wang Pengxin, Yu Yonggang, Ruan Wenjun, Wang Jian, Ning Huijun. Numerical simulation of the delay time of impact initiated projectile[J]. Explosion And Shock Waves, 2016, 36(5): 728-733. doi: 10.11883/1001-1455(2016)05-0728-06
Citation:
Zhang Menghua, Wang Pengxin, Yu Yonggang, Ruan Wenjun, Wang Jian, Ning Huijun. Numerical simulation of the delay time of impact initiated projectile[J]. Explosion And Shock Waves, 2016, 36(5): 728-733. doi: 10.11883/1001-1455(2016)05-0728-06
Zhang Menghua, Wang Pengxin, Yu Yonggang, Ruan Wenjun, Wang Jian, Ning Huijun. Numerical simulation of the delay time of impact initiated projectile[J]. Explosion And Shock Waves, 2016, 36(5): 728-733. doi: 10.11883/1001-1455(2016)05-0728-06
Citation:
Zhang Menghua, Wang Pengxin, Yu Yonggang, Ruan Wenjun, Wang Jian, Ning Huijun. Numerical simulation of the delay time of impact initiated projectile[J]. Explosion And Shock Waves, 2016, 36(5): 728-733. doi: 10.11883/1001-1455(2016)05-0728-06
In this work, we investigated the process of penetration and energy release of the impact initiated projectile was investigated using numerical simulation, verified the superiority of the coupling of smooth particle hydrodynamics (SPH) with finite element method (FEM) in impact initiation, and obtained pressure-time curves for the projectile's hot-point pressure growth in different operating conditions by analyzing its bullet core's different head shapes, diameters and materials. Our simulation results show that, for a given bullet core's diameter, the shorter the bullet head's spike length, the more reduced the initiation time for the explosives' hot-point growth; for a given bullet core's length, a reduced bullet core's diameter will lead to a reduced hot-point growth time; and bullet cores made from steel show greater advantage at delay initiation time over those made from tungsten alloy. The simulated effects of target penetration are fairly consistent with those from experimental results.
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