火工分离器仿真与实验研究  

Simulation and experimental study on pyrotechnic separator

作　　者：邢星星 张鹏[2] 赵铮[1] XING Xingxing;ZHANG Peng;ZHAO Zheng(College of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;713 Research Institute of China Shipbuilding Industry Corporation, Zhengzhou 450015, China)

机构地区：[1]南京理工大学能源与动力工程学院,南京210094 [2]中国船舶重工集团公司第七一三研究所,郑州450015

出　　处：《兵器装备工程学报》2022年第4期19-24,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(11302106)。

摘　　要：为了使某壳体快速发生分离且达到预定的初速,设计了一种基于火药燃烧做功的火工分离器,利用火药燃烧产生的气体推动推杆,再通过推杆撞击壳体使其分离。利用有限元仿真软件LS-DYNA,结合内弹道理论建立了分离器整个动态做功过程的优化仿真模型。使用仿真模型模拟得到分离器在3.6 g药量下推动4 kg钢球产生的初速以及相应曲线。开展了分离器推钢球实验,实验结果表明,3.6 g药量可使4 kg钢球达到平均26.53 m/s的初速,相同条件下仿真计算结果为26.2 m/s,相对误差为1.26%。通过仿真与实验相结合,验证了数值模型在做功方面的准确性,可为工程实际中所需的各种火工分离设计提供借鉴。In order to separate a shell quickly and reach a predetermined initial velocity,a pyrotechnic separator based on gunpowder combustion was designed.The gas produced by gunpowder combustion was used to push the piston,and then the piston hit the shell to separate it.The finite element simulation software LS-DYNA was used to simulate the whole dynamic work process of the separator.At the same time,the simulation model was modified with interior ballistic theory.Then,a more accurate simulation model was used to simulate the dynamic work process of the separator,and the initial velocity and related curve of the separator pushing 4 kg steel ball under the condition of 3.6 g powder mass were obtained.The experiment of pushing steel ball by separator was carried out to verify.The experimental results show that the initial velocity of 4kg steel ball can reach an average of 26.53 m/s with the mass of 3.6 g gunpowder,while the simulation results show that the initial velocity of 4 kg steel ball can reach 26.2 m/s with the separator.The relative error is 1.26%.Through the combination of simulation and experiment,the accuracy of the numerical model in the work of the separator was verified,which provides a reference for various pyrotechnic separation designs needed in engineering practice.

关 键 词：分离器 火药燃烧 LS-DYNA 有限元网格 

分 类 号：TJ5[兵器科学与技术—军事化学与烟火技术]