Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Missile-gun coupling finite element parametric modeling method

A parametric modeling, finite element technology, applied in 3D modeling, image data processing, design optimization/simulation, etc., can solve problems such as low modeling efficiency

Active Publication Date: 2021-05-11
NANJING UNIV OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a parametric modeling method of shell-gun coupling finite element to solve the problem of low efficiency of traditional shell-gun coupling finite element modeling

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Missile-gun coupling finite element parametric modeling method
  • Missile-gun coupling finite element parametric modeling method
  • Missile-gun coupling finite element parametric modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further introduced below in conjunction with the accompanying drawings of the description.

[0036] to combine Figure 1 to Figure 15 The content of the present invention is introduced in detail, and the parametric modeling method is used to establish a shell-cannon coupling finite element model, and the specific operation steps are as follows:

[0037] Step 1, Python language defines parameterized variables

[0038] First define the modeling initialization program, the statement is as follows:

[0039] from abaqus import*

[0040] from abaqusConstants import*

[0041] from caeModules import*

[0042] executeOnCaeStartup()

[0043] The from abaqus import is a statement defining the software as ABAQUS, the from abaqusConstantsimport statement means importing constants in ABAQUS, the from caeModules import statement means importing ABAQUS modeling modules, and the executeOnCaeStartup statement means initializing and running the modeling ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a missile-gun coupling finite element parameterized modeling method, and relates to the technical field of mechanical structure parameterized modeling. A chamber barrel missile-gun coupling finite element modeling process is described through a Python language, and a missile-gun coupling finite element model is established by using a script, so that the establishment of the missile-gun coupling finite element model is more convenient and faster. The method mainly comprises: firstly, establishing a barrel and projectile two-dimensional sketch, realizing full constraint on the two-dimensional sketch and defining parameterized variables, automatically generating a three-dimensional model according to the two-dimensional sketch, shifting barrel nodes by adopting a Python language according to a winding angle change rule, and establishing a coupling relationship between the projectile and the barrel by adopting Python description. According to the method, automatic change of the missile-gun coupling finite element model and automatic update of the numerical model are realized by adopting a programming technology, so that the modeling speed of the missile-gun coupling finite element model is increased, the design period is shortened, and the working efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of structural parameterized modeling, in particular to the technical field of projectile-cannon coupling finite element parameterized modeling. Background technique [0002] Projectile launch is an extremely complex dynamic process. The projectile interacts with the gun bore during the movement in the bore, and the material of the bullet belt has highly nonlinear mechanical behavior under high temperature and high pressure. In order to study the dynamics of the projectile in the bore, it is necessary to establish a coupling model for the interaction between the projectile and the barrel . Using the finite element method to establish the shell-gun coupling model to simulate and analyze the firing dynamics of the artillery is an important means to study the inherent laws of the firing process of the artillery system. The traditional modeling method is very time-consuming, and the modeling accuracy is low. In...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F30/23G06T17/00
CPCG06F30/23G06T17/00Y02T90/00
Inventor 张鑫周成于存贵邹利波魏甫全侯晓明
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com