Method for evaluating explosive power in explosive based on shock wave overpressure and quasi-static pressure

A technology of explosive power and shock wave, applied in the directions of material explosiveness, measurement of blasting power, etc., can solve the problems of incomplete evaluation indicators of internal explosion power and inconsistent standards, and achieve scientific power evaluation results, unified evaluation standards, and intuitive evaluation results. Effect

Active Publication Date: 2018-11-16
XIAN MODERN CHEM RES INST
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Problems solved by technology

According to the explosion characteristics of explosives in a confined space, the method determines the types of power evaluation parameters, acquisition methods, measuring point layout methods, and data processing methods, and establishes the equivalent TNT equivalent of explosive internal explosion power based o

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  • Method for evaluating explosive power in explosive based on shock wave overpressure and quasi-static pressure
  • Method for evaluating explosive power in explosive based on shock wave overpressure and quasi-static pressure
  • Method for evaluating explosive power in explosive based on shock wave overpressure and quasi-static pressure

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0044] A method for evaluating the internal explosion power of explosives based on shock wave overpressure and quasi-static pressure, the method includes the following steps:

[0045] Step 1: Determining the power parameters of the implosion and how to obtain them

[0046] The explosion power parameters in the explosive include the peak value of the overpressure of the explosion shock wave and the peak value of the quasi-static pressure. The peak value of the explosion shock wave overpressure is obtained by a high-frequency shock wave pressure sensor, and the peak quasi-static pressure is obtained by a low-frequency quasi-static pressure sensor.

[0047] Step 2: Determine the test method of the implosion power parameters

[0048] The environment of the internal explosion power test of explosives is a confined space, such as a simul...

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Abstract

The invention discloses a method for evaluating the explosive power in an explosive based on a shock wave overpressure and a quasi-static pressure. Evaluation test of the explosive power on the explosive to be evaluated and TNT, having the same mass, is carried out, an explosive power evaluation parameter kind, a measurement point laying technology and a data processing technology are determined according to the explosion characteristics in the explosive, and the method for calculating the equivalent TNT of the explosive power based on the shock wave overpressure and the quasi-static pressureis established. The method breaks through the shock wave overpressure used as a single index of the explosive power of the explosive, can completely reflect the explosive power characteristics in theexplosive, achieves a scientific and reasonable evaluation result, and can be used for selecting an explosive formula and evaluating the explosive power.

Description

[0001] The invention belongs to the technical field of explosive explosion power testing and evaluation, and specifically relates to a power evaluation method, in particular to a method for evaluating internal explosion power of explosives based on shock wave overpressure and quasi-static pressure. Background technique [0002] For ships, buildings, and other targets with chamber structures, internal explosion is the most common means of damage. The pressure effects under such working conditions are divided into shock wave overpressure and quasi-static pressure. Among them, the quasi-static pressure is formed due to the outward expansion and expansion of the high-temperature and high-pressure gas products produced by the explosion and is restricted by the confined space. It rises relatively slowly and stabilizes to a certain low pressure, and its peak value is much smaller than the peak value of the shock wave overpressure. After the ammunition explodes, the structure of the co...

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Application Information

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IPC IPC(8): G01N25/54G01L5/14
CPCG01L5/14G01N25/54
Inventor 张玉磊苏健军李芝绒蒋海燕袁建飞
Owner XIAN MODERN CHEM RES INST
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