侵彻战斗部-引信系统动力学建模与仿真  

Dynamic Modeling and Simulation for Penetration Warhead-fuze System

作　　者：程祥利 刘波[1] 赵慧[1] 刘军[1] CHENG Xiangli;LIU Bo;ZHAO Hui;LIU Jun(Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China)

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621999

出　　处：《兵工学报》2020年第4期625-633,共9页Acta Armamentarii

基　　金：武器装备预先研究项目(14021006010101)。

摘　　要：为揭示侵彻过程中引信电路模块的动态响应机理,将机械振动理论引入侵彻过程理论分析与计算,提出一种简化的侵彻战斗部-引信系统动力学模型。以侵彻战斗部-引信系统的载荷传递关系为基础,基于多自由度弹簧-质量-阻尼系统建立模型的动力学微分方程;通过谐响应分析确定固有频率、阻尼比等动力学参数,并采用数值积分的方法预测不同侵彻工况下的响应特性;从系统幅频响应特性的角度分析响应特性与传统经验公式解有很大差异的原因。与谐响应分析结果、火炮试验实测过载信号的对比分析表明:提出的动力学模型能准确、快速地预测战斗部、引信在侵彻过程中的响应特性;考虑轴向振动后,侵彻战斗部表现出明显的振动放大特性与周期振荡特性,而且是影响引信电路模块响应特性的首要因素。The mechanical vibration theory is introduced into theoretical analysis and calculation of penetration process,and a simplified dynamic model of penetration warhead-fuze system is proposed with the purpose of revealing the dynamic response mechanism of circuit module of fuze in penetration process.On the basis of analysis of loading transfer relation,a dynamic differential equation is established based on multi-DOFs spring-mass-damper system,and the dynamic parameters,such as natural frequency and damping ratio,are determined by the harmonic response analysis.Then the dynamic characteristics under different penetration conditions are predicted by numerical integration method,and the reason why the predicted dynamic characteristics differ greatly from the calculated result of the traditional empirical formula is analyzed from the amplitude-frequency response.The credibility of the proposed model was verified through artillery test,and the overload signal in penetration process was collected.The calculated value of overload signal is in agreement well with measured result.The result shows that the proposed model is more suitable to predict the dynamic characteristics of warhead or fuze in penetration process.It is shown that penetration warhead exhibits obvious vibration amplificatory characteristics and periodic oscillation characteristics in considering the axial vibration effect,and the dynamic characteristics of warhead are the most important factor affecting the dynamic characteristics of circuit module in fuze.

关 键 词：侵彻战斗部 引信 弹簧-质量-阻尼系统 谐响应分析 

分 类 号：TJ410.33[兵器科学与技术—火炮、自动武器与弹药工程] O385[理学—流体力学]