Research On Dual Environment Simulation Technology Of Fuze Recoil And Rotation Based On Electromagnetic Coil Launch

As a control device for the warhead of ammunition,the structural performance of the fuse affects the safety of service handling and operational reliability.At present,for the fuse with recoil and centrifugal force as the main release insurance,the gas cannon is mainly used as the simulation test environment,but there are shortcomings such as poor controllability and versatility,and it is difficult to effectively simulate the linear acceleration inertial force and rotary centrifugal inertial force of the fuse.Therefore,on the basis of reviewing the previous research results and the current research status at home and abroad,a fuze environment simulation method based on electromagnetic coil emission is proposed.The main research contents of this paper are as follows:Combined with the electromagnetic coil emission technology and the rotary tube simulation fuze centrifugal rotation environment method,a set of fuze recoil and rotation environment simulation device is comprehensively designed,the working method of the device is: the inductive electromagnetic coil emission system directly accelerates the test bomb to simulate the linear acceleration inertial force of the fuse,and then the test missile flies into the rotating tube,through the collision foam aluminum material,kinetic energy conversion block stays in the rotating tube,and finally the starting motor gives the test bomb to load the centrifugal environmental force.Thus,the dual environment simulation target of fuse launch recoil and rotation is realized.Maxwell,Simplorer,Simulink three software co-simulation methods are used to establish the electromagnetic coil transmitting system,and the circuit scheme is determined by comparative analysis of the three feed circuits applied to the electromagnetic coil transmission system.The maximum electromagnetic thrust and maximum stress of armatures of three different materials under different thicknesses were analyzed,and the double-layer armature structure was proposed,and the reliability of the double-layer armature structure was verified by simulation.Through the joint simulation of the three software,the three-dimensional transient electromagnetic field and circuit coupling analysis are carried out,and on the basis of analyzing the influence of the single-stage electromagnetic coil emission parameters on the electromagnetic thrust of the test projectile,the linear acceleration inertial force of the threestage electromagnetic coil emission system simulation fuse is constructed,and the indicators of acceleration greater than 12000 g and overload duration greater than 1ms are realized through simulation.The fuze device shell material was determined by shielding the magnetic field environment,and the collision between the test bomb,aluminum foam buffer block and kinetic energy conversion block of the rotating tube system was numerically analyzed by ANSYS/LSDYNA,and finally the angular velocity load was applied to the rotating tube to simulate the fuze rotation environment.