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Nonlinear Structural Dynamics Analysis of Naval Gun Extractor Systems

Author: XuYaoChun
Tutor: ZhangQingKui
School: Jiangsu University of Science and Technology
Course: Mechanical Manufacturing and Automation
Keywords: Explicit algorithm Numerical Simulation Plastic deformation Shell system
CLC: TJ391
Type: Master's thesis
Year: 2011
Downloads: 19
Quote: 0
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Abstract


The breechblock institutions is one of the important institutions of guns , its main role is to latch bore , firing end of the fire and pull out the cartridge . Shell dynamic characteristics of the system are important factors that affect the reliability of the guns found in the actual work process of a medium -caliber guns . For the plastic deformation of the shell shells fired process systems and component wear problems , as well as shell action can not be successfully completed phenomenon , on the basis of the theory of structural dynamics , finite element techniques cartridge shell force and Shell the system of structural dynamics characteristics of research and analysis and numerical simulation . This paper studies the contents : 1) shell force simulation , first expounded cannon cartridge drawn process , the elastoplastic mechanical analysis , and to explore the factors that affect the shell force ; then using the finite element software ABAQUS shell force numerical simulation , and experimental verification of the method is correct and reasonable , to provide a reference for the improved design of the cartridge . 2 ) the structure of the shell system dynamics analysis, discusses the the shell system 's structure and working principle , the application of three-dimensional software PRO / E and the finite element software HyperMesh established a naval gun shell entity model and finite element analysis model ; then use ABAQUS display algorithm analysis model study reveals the the shell system structure stress distribution law , comparing the dynamic characteristics of the system before and after the shell rocker wear of wear and tear on the system energy of the shell and the shell speed impact , and is optimized for the plastic deformation of the pumping cheese rocker shell system to solve the problem of pumping the plastic deformation of the cheese to determine the best rocker thickness selection ; Finally, the experimental verification of a finite element analysis model rationality and correctness . Nonlinear structural dynamics study of naval gun shell system combination by experiment and simulation analysis , an equivalent model for the study of the shell system , and provide a method for guns component wear analysis , but also improvements for future products designed to provide support on the theory and practice .

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CLC: > Industrial Technology > Arms industry > Artillery > Gun
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