PBX-3造型粉颗粒压制成型过程仿真分析  

Simulation Analysis of PBX-3 Powder Particle Densification Process

作　　者：赵海波 李自胜[1] 肖晓萍 卢洋 刘宇宸 刘聪 ZHAO Hai-bo;LI Zi-sheng;XIAO Xiao-ping;LU Yang;LIU Yu-chen;LIU Cong(School of Manufacturing Science and Engineering,Southwest University of Science and Technology,Mianyang,621010;Engineering Technology Center,Southwest University of Science and Technology,Mianyang,621010)

机构地区：[1]西南科技大学制造科学与工程学院,四川绵阳621010 [2]西南科技大学工程技术中心,四川绵阳621010

出　　处：《火工品》2024年第6期48-54,共7页Initiators & Pyrotechnics

摘　　要：为了探究3号高聚物粘结炸药(PBX-3)压制成型过程中的颗粒演变行为和密度演化规律,采用多颗粒有限元法(MPFEM)结合Johnson-Cook(J-C)模型对PBX-3粉末在压制过程中的致密化行为进行了模拟仿真;将仿真结果与Heckel方程拟合,分析了压制过程中粉体的温度与压紧力大小对粉体颗粒致密化质量的影响,并讨论了粉末颗粒中的应力和应变分布。结果表明:在PBX-3致密化过程的滑移阶段、变形阶段以及压实阶段中,升高压制温度能有效减小压制过程中所需的压紧力,并提高药柱成型密度。In order to investigate the particle evolution behavior and density evolution law during the compression molding process of polymer-bonded explosive-3(PBX-3),the multi-particle finite element method(MPFEM)combined with Johnson-Cook(J-C)model was used to simulate the densification behavior of PBX-3 powder during the compression process;The simulation results were fitted with the Heckel equation to analyze the influence of powder temperature and compression force on the densification quality of powder particles during the compression process,and the stress and strain distribution in the powder particles were discussed.The results show that increasing the pressing temperature during the sliding,deformation,and compaction stages of PBX-3 densification process can effectively reduce the required pressing force and improve the density of the formed grain.

关 键 词：PBX-3 致密化过程 仿真 多颗粒有限元法(MPFEM) 药柱成型密度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ560.6[化学工程—炸药化工]