加固机动发射车外形结构对其稳定性影响研究  

Study on the Effect of Reinforced Motorized Launch Vehicle form Structure on Its Stability

作　　者：余文鑫 万晨 季方 刘志鹏[1] 赵家兴 罗世建 YU Wenxin;WAN Chen;JI Fang;LIU Zhipeng;ZHAO Jiaxing;LUO Shijian(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Norinco Group Jiangshan Heavy Industries Research Institute Co.,Ltd.,Xiangyang 441057,Hubei,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]中国兵器工业集团江山重工研究院有限公司,湖北襄阳441057

出　　处：《火炮发射与控制学报》2024年第5期16-24,34,共10页Journal of Gun Launch & Control

基　　金：中央高校基本科研业务费专项资金资助(2023101001)。

摘　　要：爆炸场中发射车受冲击作用存在倾覆可能,从而丧失战斗能力,在针对发射车抗爆加固设计中,对车体外形结构的考虑是必要的。为分析发射车不同外形结构在冲击波作用下的稳定性差异,使用激波管分别对矩形箱体、半圆形箱体、等腰梯形箱体进行冲击试验,并利用高速摄影观测箱体受冲击后的运动响应。为在激波管口获得预想的冲击波超压,使用AUTODYN对爆炸驱动激波管内流场进行仿真计算并与试验结果对比验证,通过仿真数据拟合了爆炸驱动激波管超压的经验公式。冲击试验表明,爆炸场中半圆形箱体比矩形箱体在质量更小的条件下具有更强的抗平动位移优势;等腰梯形箱体比矩形箱体在质量更小的条件下具有更强的抗倾覆能力。在发射车的加固设计中,采用等腰梯形截面结构比传统矩形截面结构在质量更小的条件下会有更好的抗倾覆稳定性。It is necessary to consider the external structure of the vehicle body in the design of anti explosion reinforcement for launch vehicles,as there is a possibility of overturning and further more loss of combat capability due to the impact in an explosion field.In order to analyze the stability difference of the launch vehicle with different structures under the action of the shock wave,the shock tube was used to test the rectangular box,semi-circular box and isosceles trapezoidal box respectively,and the motion response of the box after impact was observed by high-speed photography.In order to obtain the expected shock wave overpressure at the shock nozzle,the flow field inside the explosion-driven shock tube was simulated by using AUTODYN and verified by comparing with the test results,and the empi-rical formula for the overpressure of the explosion-driven shock tube was fitted by the simulation data.The impact test shows that the semicircular box in the explosion field has a stronger advantage against translational displacement than the rectangular box under the condition of smaller mass;and the isosceles trapezoidal box has a greater resistance to overturning than the rectangular box under the condition of smaller mass.In the reinforcement design of the launch vehicle,the use of isosceles trapezoidal cross-section structure will have better stability against overturning than the traditional rectangular cross-section structure under the condition of smaller mass.

关 键 词：发射车外形 激波管 爆炸冲击波 稳定性 

分 类 号：TJ768[兵器科学与技术—武器系统与运用工程]