Reaction intensity evaluation method for ammunition with pressure relief structure based on reaction evolution model

Abstract

The invention discloses a reaction intensity evaluation method of ammunition with a pressure relief structure based on a reaction evolution model, relates to the technical field of ammunition, aims at the calculation problem of the evolution of combustion reaction growth after accidental ignition of ammunition with a pressure relief channel, and solves the problem of ammunition under high temperature, fire, etc. Difficulties in controlling and quantifying response intensity to unexpected stimuli. The invention quantitatively provides the growth history of the internal pressure and reactivity of the projectile close to the actual state by modeling the growth and evolution process of the combustion reaction after the ignition of the ammunition charge with the pressure relief channel and the pressure relief hole. The pressure model in the shell, the reactivity model of the charge matrix, and finally the reaction intensity of the ammunition can be obtained to achieve an objective description of the reaction growth and evolution behavior of the ammunition charge after ignition. Intensity control and quantitative evaluation provide a theoretical basis to solve the problem of intensity control and quantitative evaluation of ammunition under unexpected stimuli such as high temperature and fire.

Description

technical field [0001] The invention relates to the technical field of ammunition, in particular to a reaction intensity evaluation method for ammunition with a pressure relief structure based on a reaction evolution model. Background technique [0002] During the whole life process of storage, transportation or service, ammunition will inevitably encounter accidental thermal / mechanical stimuli such as drop, impact, fire or long-term exposure to high temperature environment, which will cause the ammunition charge to ignite and burn until it explodes or even turns to detonation. Non-shock ignition accident reaction with catastrophic consequences. The reaction and evolution process of this non-shock ignition accident is very complex, and is affected by various factors such as the strength of the restrained structure, inertial restraint capacity, inherent intrinsic combustion characteristics of explosives, and crack development and evolution. It involves dynamic damage crack in...

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Problems solved by technology

[0004] In view of this, the present invention provides a reaction intensity evaluation method for ammunition with a pressure relief structure based on a reaction evolution model, aiming at the calculation problem of combustion reaction growth evolution calculation of ammunition charges with pressure relief channels and pressure relief holes after accidental ignition, to solve the problem of ammunition in the Response intensity control and quantitative evaluation problems under unexpected stimuli such as high temperature and fire

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