初始堆积对发射药床底部挤压应力的影响  

Effect of original packing on compression stress at the bottom of propellant bed

作　　者：王燕[1] 芮筱亭[1] 宋振东 黎超[1] 姜世平[1] 冯宾宾[1] 王国平[1] 

机构地区：[1]南京理工大学发射动力学研究所,江苏南京210094 [2]总装备部通保部军械局,北京100720

出　　处：《爆炸与冲击》2014年第5期560-566,共7页Explosion and Shock Waves

基　　金：国家自然科学基金项目(11102089);高校博士点基金项目(20113219110025);新世纪优秀人才支持计划项目(NCET-10-0075);江苏省博士研究生科研创新培养基金项目(CXZZ12_0216)~~

摘　　要：为给发射装药发射安全性的评估提供关键数据,对不同初始堆积发射药床进行了挤压破碎实验,测得了发射药床底部的挤压应力。利用离散单元法,建立了发射装药挤压破碎动力学模型,对发射药床的挤压应力进行了计算。实验结果和计算结果吻合较好。随机堆积药床底部的挤压应力较一致,竖排堆积药床底部的挤压应力差异较大。To provide the key data for evaluating the launch safety of propellant charge,dynamic compression fracture experiments were carried out for the propellant charges with different original packing modes.And the corresponding compression stresses at the bottoms of the propellant beds were obtained under the same loadings.By using the discrete element method,a dynamics model was proposed to simulate the compression fracture of the propellant charges.And the simulated compression stresses were in agreement with the experimental ones.The random packing mode did not obviously affect the compression stresses at the bottoms of the propellant beds,but when the propellants were packed in the plumb mode,the compression stresses at the bottoms of the propellant beds were markedly different.

关 键 词：爆炸力学 挤压应力 动态挤压 发射药床 初始堆积 

分 类 号：O383[理学—流体力学]