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Numerical simulation of the mechanical initiation of liquid explosive systems
A. V. Dubovik Semenov Institute of Chemical Physics, Russian Academy of Sciences, 117977, Moscow
Abstract:
The minimum initiation energy is studied numerically as a function of the thickness of a layer of viscous explosive liquid placed in a narrow gap between the plane-parallel surfaces of a striker and an anvil. The statement of the problem simulates the conditions for actual tests of explosives for impact sensitivity. For a given impact force, a layer of liquid with a “soft” type of mechanical behavior is found to exist, which most rapidly acquires energy from a striker and is heated through viscous dissipation of the mechanical energy. It also forms a layer of critical thickness that is characterized by an absolute minimum in the initiation energy. The existence of a layer with a “hard” type of mechanical behavior in the test samples explains the intrinsically nonmonotonic dependence.
Received: 12.03.1998 Accepted: 09.07.1998
Citation:
A. V. Dubovik, “Numerical simulation of the mechanical initiation of liquid explosive systems”, Fizika Goreniya i Vzryva, 35:3 (1999), 103–110; Combustion, Explosion and Shock Waves, 35:3 (1999), 309–316
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https://www.mathnet.ru/eng/fgv2340 https://www.mathnet.ru/eng/fgv/v35/i3/p103
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