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A method for evaluating the reliability of the firing strength of bullet bullets

A technology of launch strength and reliability, applied in the field of bullets, can solve the problems of high design cost, long design cycle, difficult bullet enterprise application, etc.

Inactive Publication Date: 2020-07-07
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this stage, the reliability analysis of warhead launch strength is mainly done by applying classical reliability theory and based on a large amount of experimental data. The design cost is high, the design cycle is long, and there are high theoretical requirements for designers, so it is difficult to implement and apply in bullet companies

Method used

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  • A method for evaluating the reliability of the firing strength of bullet bullets
  • A method for evaluating the reliability of the firing strength of bullet bullets
  • A method for evaluating the reliability of the firing strength of bullet bullets

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Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] Such as figure 1 As shown, the present invention provides a method for evaluating the reliability of bullet warhead firing strength reliability based on Isight software, comprising the following steps:

[0046] S1, determine the random factors that affect the firing strength of bullet warheads;

[0047] There are many factors that affect the launch strength of warheads, such as chamber pressure, warhead material stress, warhead structure size, etc. Due to manufacturing process errors, warhead structure dimensions and material parameters are random variables that obey a certain distribution law. Influenced by factors, the maximum chamber pressure will also be inconsistent.

[0048] In the present invention, through the sensitivity analysis of the influencing factors based on Isight software, it is found that the random factors affecting the fi...

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Abstract

The invention belongs to the field of bullets, and provides an lsight software-based bullet warhead emission intensity reliability assessment method. The method comprises the following steps of: determining a random factor influencing a bullet warhead emission intensity; establishing an ABAQUS software-based bullet warhead emission intensity parametric finite element simulation model; customizing a bullet warhead emission intensity reliability analysis process by utilizing lsight software on the basis of the bullet warhead emission intensity parametric finite element simulation model, so as to obtain a plurality of finite element simulation results; and obtaining reliability of the bullet warhead emission intensity according to the plurality of finite element simulation results, so as to complete the assessment of the bullet warhead emission intensity reliability. The method provided by the invention is capable of simplifying the warhead emission intensity reliability analysis process, improving the assessment efficiency and reducing the analysis cost.

Description

technical field [0001] The invention belongs to the field of bullets, and relates to a method for evaluating the reliability of the firing strength of bullet warheads based on Isight software. Background technique [0002] Due to the unreliable strength of the projectile warhead during the firing process, problems such as unstable flight of the outer trajectory and damage to the barrel due to metal shedding will endanger the lives of soldiers in severe cases. Therefore, ensuring sufficient bullet firing strength is crucial to the design of bullets. [0003] When the warhead is under various loads during launch, stress and deformation are generated inside the material. According to the load change characteristics, for general rifled guns and cannons, there are three dangerous critical states for the force and deformation of the projectile, namely, the first critical state when the projectile squeezes into the slope chamber, the second critical state when the chamber pressure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 魏志芳杜烨胡冶昌
Owner ZHONGBEI UNIV
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