粉末药型罩轴向密度分布对聚能粒子流影响  

Effect of Powder Liner's Axial Density Distribution on Shaped Particle Flow

作　　者：段能全[1] 高永宏[2] 王文涛[1] 刘天生[2] 王俊元[1] 

机构地区：[1]中北大学机械与动力工程学院,太原030051 [2]中北大学化工与环境学院,太原030051

出　　处：《弹箭与制导学报》2014年第5期90-93,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(11072222)资助

摘　　要：为研究粉末药型罩轴向密度分布对其形成射流性能的影响,以药型罩微元假设为基础,构建了射流相对长度增量和微元相对位移增量公式,并借助离散元法仿真拟合了粉末药型罩密度分布。通过数值分析与试验相结合,对药型罩轴向密度分布对射流长度和断裂趋势的影响进行了分析研究,结果表明:粉末药型罩密度具有非均匀轴向分布时,可形成相对较长、断裂时间较缓的射流,且其侵彻性能较优。In order to study effect of axial density distribution of powder liner on its jet,the formulas of jet relative length increment and infinitesimal relative displacement increment were built by micro-element assumptions. The density distribution of the powder liner was fit by the discrete element method simulation. Through numerical simulation and static penetration tests,the effects of axial density distribution of liner on length and fracture trends of the jet were studied. The results show that the non-uniform density distribution in liner axial direction can help to lengthen the jet and delay its fracture time. In addition,its penetration properties are well.

关 键 词：粉末药型罩 密度分布 聚能粒子流 粉末压制 离散元法 

分 类 号：TJ410.333[兵器科学与技术—火炮、自动武器与弹药工程] O385[理学—流体力学]