弹道学报2026，Vol.38Issue(1)：59-65,7.DOI:10.12115/ddxb.2025.08003
基于轴对称光滑有限元的身管动力学仿真
Dynamic Simulation of Barrel Based on Axisymmetric Smoothed Finite Element Method
魏甜甜 1姜懿俊 2黄文宽3
作者信息
- 1. 无锡科技职业学院 智能制造学院,江苏 无锡 214028
- 2. 南京理工大学 机械工程学院,江苏 南京 210094
- 3. 国防科技大学 外国语学院,江苏 南京 210039
- 折叠
摘要
Abstract
To address the issue of large-scale numerical simulation in artillery barrel analysis,a two-dimensional axisymmetric strain-smoothed element was developed based on the gradient-smoothed finite element method.This approach performs strain smoothing operations at the edge centroids of triangular finite elements and subsequently constructs a linearly varying strain field within the element by interpolating the smoothed strains from these edge centroids.Compared with conventional linear finite elements,this method effectively mitigates strain discontinuity across elements,thereby improving computational accuracy.Utilizing this method,an axisymmetric finite element model of the barrel was established,and structural dynamic simulations were conducted considering the spatiotemporal variations in propellant gas loading.The results demonstrate that during the interior ballistic process,the maximum deformation and stress occur at the forcing cone of barrel,where radial deformation dominates.However,the axial spatial distribution variation of the load induces non-negligible axial deformation,which cannot be captured by thick-walled cylinder theory.The method in this paper improves triangular elements in modal analysis by introducing strain smoothing stabilization techniques.While maintaining the convenience of mesh generation,it achieves computational accuracy close to that of the traditional hexahedral element method.This study provides more comprehensive theoretical support for the design of artillery barrel.关键词
火炮身管/结构动力学/有限元/应变光滑/轴对称单元Key words
barrel/structural dynamics/finite element method/strain smoothed/axisymmetric element分类
军事科技引用本文复制引用
魏甜甜,姜懿俊,黄文宽..基于轴对称光滑有限元的身管动力学仿真[J].弹道学报,2026,38(1):59-65,7.
