爆破器材2025，Vol.54Issue(5)：8-17,10.DOI:10.3969/j.issn.1001-8352.2025.05.002
基于多粒子有限元法的PBX致密化行为的数值模拟研究
Numerical Simulation of PBX Densification Behavior Based on Multi-Particle Finite Element Method
黄翰哲 1王克俭 1牛余雷 2王志伟 1马梓煜1
作者信息
- 1. 北京化工大学机电工程学院(北京,100029)
- 2. 西安近代化学研究所(陕西 西安,710065)
- 折叠
摘要
Abstract
In order to investigate the densification mechanism of polymer bonded explosive(PBX)during pressing,in the process of simulating pressing at the particle scale,multi-particle finite element method(MPFEM)was used to ana-lyze the effects of the differences in bulk density,temperature,and particle size on the micro mechanical behavior.The results show that the particle slip of the low bulk density system is severe,the force chain barrier obstructing particle move-ment is easy to form,and the stress concentration is serious and the average stress is increased.High temperature could reduce the total strain energy of the system,increase the equivalent plastic,elastic,and thermal strain,and alleviate stress concentration.In the system of particle size difference,the slip degree and stress deformation of small particles are signifi-cantly higher than those of large particles,and the contact of large particles forms a force chain barrier and generates an anti-deformation protection area.MPFEM can effectively capture particle motion and deformation characteristics,and provide theoretical basis for optimizing PBX pressing process.关键词
高聚物黏结炸药(PBX)/数值模拟/压制成型/多粒子有限元法(MPFEM)Key words
polymer bonded explosive(PBX)/numerical simulation/press forming/multi-particle finite element method(MPFEM)分类
军事科技引用本文复制引用
黄翰哲,王克俭,牛余雷,王志伟,马梓煜..基于多粒子有限元法的PBX致密化行为的数值模拟研究[J].爆破器材,2025,54(5):8-17,10.
