Fuze Threaded Connection Influencing Factors of Overload Signals Adhesion
Penetrative fuzes often use threaded structures for connection and assembly with the warhead.During the process of the projectile penetrating the target,the impact load acting on the projectile will be transmitted to the fuze through the threaded structure,making the overload of the fuze more complex than that of the projec-tile.Especially when the projectile penetrates multi-layered hard targets at high speed,the overload signal of the fuze is prone to adhesion and overlap.To address this issue,this paper was based on the stiffness theory model of threaded connections and according to the characteristics of the projectile fuze structure and its equivalent sys-tem model,taking a certain projectile fuze structure as an example,analyzed the impact of threaded structure parameters on the adhesion of the fuze overload signal.The results showed that the reduction of pitch increased the stiffness of the threaded connection,and compared with the warhead and the fuze seat,the change of pitch between the fuze and the fuze seat had a greater impact on the overload at the fuze.Increasing the pitch at the fuze is beneficial to reduce the degree of signal adhesion.
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