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STUDY ON QUASI-STATIC PRESSURE OF TNT INTERNAL EXPLOSION IN CONFINED SPACES
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Afterburning-effect accompanies the explosion of TNT explosion. To accurately analyze and study the quasi- static pressure characteristics of TNT explosion in confined space, using AUTODYN finite element software to numerically simulate the explosion of TNT explosives of different masses in a confined space, and through parameter settings, The afterburning-effect of detonation products produced by TNT explosion is considered. The quasi-static pressure values of TNT explosives with the different masses of TNT in the confined space are obtained. Through dimensional analysis, it is concluded that the ratio of the confined space volume to explosive charge is the main factor affecting quasi-static pressure. And conclude by fitting the numerical simulation results that the functional relationship between quasi-static pressure value and charge volume ratio of confined space Within the scope of 2.79kg / m3 W / V 27.9kg / m3 the maximum relative deviation between the calculated value and the test value is 10.5%, which can be used to predict the quasi-static pressure peak value of TNT explosion in a confined space.
Keywords: TNT, quasi-static pressure, numerical simulation, mass-space volume, dimensional analysis
Global Academic Research Institute (Pvt) Ltd
Title: STUDY ON QUASI-STATIC PRESSURE OF TNT INTERNAL EXPLOSION IN CONFINED SPACES
Description:
Afterburning-effect accompanies the explosion of TNT explosion.
To accurately analyze and study the quasi- static pressure characteristics of TNT explosion in confined space, using AUTODYN finite element software to numerically simulate the explosion of TNT explosives of different masses in a confined space, and through parameter settings, The afterburning-effect of detonation products produced by TNT explosion is considered.
The quasi-static pressure values of TNT explosives with the different masses of TNT in the confined space are obtained.
Through dimensional analysis, it is concluded that the ratio of the confined space volume to explosive charge is the main factor affecting quasi-static pressure.
And conclude by fitting the numerical simulation results that the functional relationship between quasi-static pressure value and charge volume ratio of confined space Within the scope of 2.
79kg / m3 W / V 27.
9kg / m3 the maximum relative deviation between the calculated value and the test value is 10.
5%, which can be used to predict the quasi-static pressure peak value of TNT explosion in a confined space.
Keywords: TNT, quasi-static pressure, numerical simulation, mass-space volume, dimensional analysis.
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