升温速率对引信烤燃响应特性的影响  

Effect of Heating Rate on the Response Characteristics of Fuze Cook-off Test

作　　者：吴琴钟 王炅[1] 陆静[1] 席占稳[1] WU Qinzhong;WANG Jiong;LU Jing;XI Zhanwen(School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《探测与控制学报》2020年第4期1-6,共6页Journal of Detection & Control

基　　金：国防科技预研项目资助(004060104)。

摘　　要：针对弹药在制造、存储、运输及实战等环境中遭受意外热刺激的问题,对不同升温速率下引信烤燃的热响应规律进行了研究。以1,1二氨基2,2二硝基乙烯(FOX7)装药引信为研究对象,建立了考虑引信各部件热膨胀作用的烤燃计算模型,采用ANSYS Workbench软件对0.5 K/min,1 K/min,2 K/min,3 K/min,4 K/min,5 K/min和6 K/min七种不同升温速率下引信烤燃的热传导和热膨胀过程进行热力耦合计算,得到了引信的点火位置、点火时间、点火温度、形变量以及等效应力。仿真计算结果表明:随着升温速率的增加,点火位置由传爆药柱中心向传爆药边缘位置移动,最终出现在导爆药柱中;点火时间缩短,而变形量先增大后减小;传爆序列的最大等效应力均位于传爆药柱中;升温速率对点火温度的影响较小。To solve the problem that ammunition may suffer accidental thermal stimulation in manufacture,storage,transportation and combat environment,the thermal response law of fuze under different heating rates of cook-off test was studied.The cook-off model considered thermal expansion was established for a fuze filled with FOX7,and the thermal conduction and thermal expansion of fuze were numerically simulated and analyzed by ANSYS Workbench software under different heating rates of 0.5 K/min,1 K/min,2 K/min,3 K/min,4 K/min,5 K/min and 6 K/min.The simulated results showed that,with the increasing of heating rate,the ignition position removed from the interior to the edge of the booster and finally appeared in the detonator.As the heating rate increased,the ignition time decreases,while the deformation increase first then decrease.Maximum equivalent stress of detonation sequence always appeared in the booster.However,the ignition temperature was slightly affected by the heating rate.The calculation results could provide reference for the thermal safety design of fuze.

关 键 词：烤燃 升温速率 点火 热力耦合 

分 类 号：TJ43[兵器科学与技术—火炮、自动武器与弹药工程]