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Method for constructing dynamic model of complex-shaped armature electromagnetic gun based on COMSOL

A construction method and dynamic model technology, applied in the field of dynamic electromagnetic gun model construction, can solve the problems of increasing difficulty, difficulty in electromagnetic rail gun model, irregular shape of armature, etc., and achieve the effect of wide application range

Inactive Publication Date: 2021-04-23
NANJING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

In summary, the difficulty of electromagnetic railgun simulation research lies in: simulating the real movement of the armature, and considering the influence of the velocity skin effect on the electromagnetic distribution
[0004] Building a dynamic electromagnetic railgun model is inherently difficult, and the irregular shape of the armature makes it even more difficult

Method used

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  • Method for constructing dynamic model of complex-shaped armature electromagnetic gun based on COMSOL
  • Method for constructing dynamic model of complex-shaped armature electromagnetic gun based on COMSOL
  • Method for constructing dynamic model of complex-shaped armature electromagnetic gun based on COMSOL

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Embodiment Construction

[0030] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] combine figure 1 , the present invention provides a kind of dynamic electromagnetic gun model building method based on the complex shape armature of COMSOL, specifically comprises the following steps:

[0032] Step 1: Geometric modeling of the railgun model based on COMSOL;

[0033] figure 2 It is a schematic diagram of the structure of the rail gun, in which the track length is 2000mm, the width is 15mm, and the height is 20mm; the muzzle size is 20mm×20mm; the armature length is 20mm, and the tail is U-shaped. Built in the COMSOL Multiphysics software image 3 The model shown, the model includes two rails and the bore between the rails, which represents the armature and its sliding area. The tail of the gun is located in the yz plane, the center coincides with the coordinate origin of the yz plane, and the armature moves along the posit...

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Abstract

The invention provides a COMSOL-based dynamic electromagnetic gun model construction method, which is suitable for armatures with complex shapes, can calculate electromagnetic distribution conditions in an electromagnetic gun and a bore, and comprises the following steps of: geometrically modeling a track gun model based on COMSOL, formulatively describing the shapes of the head and the tail of the armature, and setting material parameters based on the COMSOL; and carrying out physical field setting, mesh generation and solving calculation in the COMSOL. According to the invention, the limitation of the armature shape on simulation research is broken through, and the dynamic simulation of the launching process can be realized.

Description

technical field [0001] The invention belongs to the field of electromagnetic launch, and relates to a new method for constructing a dynamic electromagnetic gun model of an armature with complex shapes based on COMSOL. Background technique [0002] Compared with the traditional chemical energy launch technology, the electromagnetic railgun can not only meet the launch requirements of high muzzle velocity and high kinetic energy of weapons and ammunition, but also has obvious advantages such as long range, high accuracy, easy control, and high efficiency. However, during the launch phase, the complex and harsh electromagnetic environment in the bore will affect the electronic components in the projectile, making its performance damaged or even invalid. [0003] John Mallik used Ansoft Maxwell software to conduct finite element simulation on the railgun launch process, and studied the current density distribution and Lorentz force distribution on the railgun under the static co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 沈瑞琪杨涵斐张伟叶迎华
Owner NANJING UNIV OF SCI & TECH
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