高转速下膛内装药发射安定性仿真分析  

Simulation analysis of launch stability of in-bore charge at high speed

作　　者：何司璐 赵太勇[2] 蒋显松 易荣成 周滔 王卓硕 王维占 HE Silu;ZHAO Taiyong;JIANG Xiansong;YI Rongcheng;ZHOU Tao;WANG Zhuoshuo;WANG Weizhan(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,China;National Defense Key Discipline Laboratory of Underground Target Destruction Technology,North University of China,Taiyuan 030051,China;Chongqing Chang’anIndustry(Group)Co.,Ltd.,Chongqing 401120,China)

机构地区：[1]中北大学机电工程学院,太原030051 [2]中北大学地下目标毁伤技术国防重点学科实验室,太原030051 [3]重庆长安工业(集团)有限责任公司,重庆401120

出　　处：《兵器装备工程学报》2023年第9期122-133,共12页Journal of Ordnance Equipment Engineering

摘　　要：高速旋转弹丸发射过程中存在较大的轴向加速度和角加速度,导致装药与其他零部件之间产生相对运动,影响装药发射过程中的安定性。文章采用LS-DYNA软件通过改变底隙、静/动摩擦因数以及膛压大小对膛内装药发射安定性的影响因素进行仿真分析。结果表明,装药底面应力峰值随着底隙的增大而呈先增大后趋于稳定的趋势;侧面应力峰值总体随着摩擦因数的增大而增大;在仅改变膛压时,装药底面及侧面微元应力随膛压的增大而增大;弹体与装药的转速也随膛压的增大而增大,弹体与装药之间的相对转速则随膛压的增大而减小。There is a large axial acceleration and angular acceleration in the launching process of high-speed rotating projectile,which leads to the relative motion between the charge and other parts,and affects the stability of the charge during launching.In this paper,LS-DYNA software is used to simulate and analyze the influencing factors of the launching stability of in-bore charge by changing the bottom gap,static/dynamic friction coefficient and chamber pressure.The results show that the peak stress of the bottom surface of the charge increases first and then tends to be stable with the increase of the bottom gap.The peak value of side stress increases with the increase of friction coefficient.When only the chamber pressure is changed,the micro-element stress on the bottom and side of the charge increases with the increase of the chamber pressure.The rotational speed of projectile and charge also increases with the increase of chamber pressure,and the relative rotational speed between projectile and charge decreases with the increase of chamber pressure.

关 键 词：底隙 膛内发射 高转速 发射安定性 装药应力 数值模拟 

分 类 号：TJ4[兵器科学与技术—火炮、自动武器与弹药工程]