Dynamic Modeling and Simulation for Penetration Warhead-fuze System

doi:10.3969/j.issn.1000-1093.2020.04.001

Abstract

Abstract: 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.Key

Key words: penetrationwarhead, fuze, spring-mass-dampersystem, harmonicresponseanalysis

CLC Number:

CHENG Xiangli, LIU Bo, ZHAO Hui, LIU Jun. Dynamic Modeling and Simulation for Penetration Warhead-fuze System[J]. Acta Armamentarii, 2020, 41(4): 625-633.

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第41卷第4期2020 年4月
兵工学报ACTA ARMAMENTARII
Vol.41No.4Apr.2020

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