Simplified calculation method for terrorist explosion shock wave characteristic parameters

An explosion shock wave, characteristic parameter technology, applied in electrical digital data processing, design optimization/simulation, instruments, etc., to achieve the effect of simplifying the calculation method

Active Publication Date: 2020-07-24
中国人民解放军军事科学院国防工程研究院工程防护研究所
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Problems solved by technology

However, the existing related research mainly focuses on the distribution of blast waves in streets and buildings, and the research on the distribution characteristics of blast shock waves entering building...

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  • Simplified calculation method for terrorist explosion shock wave characteristic parameters
  • Simplified calculation method for terrorist explosion shock wave characteristic parameters
  • Simplified calculation method for terrorist explosion shock wave characteristic parameters

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Embodiment Construction

[0056] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0057] A simplified calculation method for characteristic parameters of a terrorist explosion shock wave, comprising the following steps:

[0058] Step S1, such as figure 1 As shown, it is assumed that the explosive device 1 with a charge of W kilograms of TNT equivalent explodes on the ground which is R meters away from the center of the building orifice, and the atmospheric pressure is P 0 , the air density is ρ 0 , the volume of orifice 3 is V 0 , the volume of the building 2 is V, the shock wave pressure entering the building 2 from the orifice 3 is uniform, and the shock wave characteristic parameters include the uniform pressure ΔP C , positive pressure action time τ +C , the average positive impulse I C , the determinable main set of parameters is:

[0059] W, R, P 0 , ρ 0 , V 0 , V;

[0060] Shock wave characteristic parameters are taken as ...

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Abstract

The invention relates to a simplified calculation method for terrorist explosion shock wave characteristic parameters. Firstly, it is assumed that an explosive device with the explosive load being W kg TNT equivalent explodes on the ground which is R meters away from the center of a building orifice, wherein the ambient atmospheric pressure is P0, the air density is rho0, the volume of the orificestructure is V0, the volume of the building structure is V, the pressure of shock waves entering the building structure from the orifice structure is uniformly distributed, and the shock wave characteristic parameters comprise shock wave uniform distribution pressure delta PC, positive pressure action time tau + C and average positive pressure impulse IC; and then an explosion simulation test iscarried out, and data fitting is adopted to obtain a calculation formula of an average value of explosion shock wave parameters entering the building structure from any orifice structure when the conventional weapons with different equivalents explode at any position outside the building structure. According to the method, the characteristic parameters of the shock waves entering the building fromthe orifice structure can be rapidly and accurately calculated, and the method is of great significance to damage evaluation and protection evaluation of the interior of the orifice structure.

Description

technical field [0001] The invention relates to a calculation method of a shock wave, which is used for calculating the characteristic parameters of the shock wave inside a building with an orifice structure when a terrorist explosion occurs outside the building, in particular to a simplified calculation method for the characteristic parameters of the shock wave of the terrorist explosion. Background technique [0002] The orifice structure refers to engineering structures with orifices, including various protective engineering structures with orifices and civil buildings with orifices such as doors, windows, ventilation, and communications in terrorist explosions. [0003] In recent years, violent and terrorist attacks have occurred frequently all over the world and have become a cancer that endangers national security and social stability. Shock wave is the main damage factor of terrorist explosion. At present, all countries in the world attach great importance to terrori...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCY02T90/00
Inventor 范俊奇孔福利贺永胜刘国强赵强
Owner 中国人民解放军军事科学院国防工程研究院工程防护研究所
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