Distributed Detection Overload Response of Composite Warhead Penetration Fuze
When the composite warhead penetrates multi-layer targets at high speed,the overload signal of the traditional projectile base fuze is mixed with the oscillating signal,which makes it difficult to accurately measure the layer.A method to improve the accuracy of the layer by studying the overload response of different parts was proposed in this paper.The distributed fuze system model of composite warhead and the finite element mod-el of composite warhead penetrating 5-layer reinforced concrete target were established.The overload signal of projectile obtained by numerical simulation was analyzed,and the propagation law of stress wave in projectile was obtained.The larger the projectile velocity,the smaller the target spacing and the longer the projectile length,the less the number of cycles of stress wave in the projectile during inter-layer flight,and the more obvi-ous the penetration process.The correlation of triaxial overload signals in different parts was analyzed from the perspective of frequency domain,and it was found that radial oscillation had a great influence on axial overload.Comparing the overload signals of different parts at 900 m/s,1 300 m/s and 1 700 m/s,the overload response of the front part of the projectile was better than that of the tail when the composite warhead penetrates the tar-get at high speed.The stress wave propagation law of composite warhead was obtained,and the similarities and differences of overload response characteristics in different parts were summarized,which could provide simula-tion data support for penetration process identification based on distributed detection and data fusion.
NETL
NSTL
万方数据
