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Numerical simulation of high explosive detonation shock

Author: CuiKaiHua
Tutor: HongTao
School: Chinese Academy of Engineering Physics
Course: Fluid Mechanics
Keywords: Explosion Projectiles Comp B charge Shock initiation Delayed initiation Critical speed
CLC: O383
Type: Master's thesis
Year: 2010
Downloads: 294
Quote: 2
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Abstract


In analyzing and verifying the cylinder -type flat head copper shells hit with cover Comp B charge detonation conditions , based on the use of LS-DYNA to simulate the cylindrical flat head and round tungsten bullet impact with different thickness steel plate CompB charge initiation process analyzes the critical detonation velocity with the variation of the thickness of the cover , discusses the phenomenon occurs XDT cause and mechanism . The results showed that direct shock initiation results better able to meet the criteria Jacobs , round and flat head tungsten projectile impact with cover charge CompB critical initiation speed satisfies the relation Vround ≈ 1.15Vflat, XDT phenomenon occurs because the explosives were damage and reflections caused by the impact of joint action and position XDT phenomena were explosives in the adjacent plate interface . Finally, rectangular type flat head shot, discussed projectiles density, hardness variation on the critical detonation velocity. And the preliminary calculation of the safety of the parts of a dynamite drop height .

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CLC: > Mathematical sciences and chemical > Mechanics > Explosion > The interaction of blast wave and the object
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