强冲击载荷作用下Halbach阵列电涡流阻尼器动力学特性仿真分析

针对传统液压式火炮制退机存在制退液失效和泄漏的问题,通过仿真分析直线型Halbach阵列的磁场分布特性,提出了一种基于Halbach永磁阵列的电涡流阻尼器结构。通过引入火炮后坐运动方程,建立了电涡流阻尼器涡流阻尼力数学分析模型。利用Comsol软件建立了电涡流阻尼器动力学有限元仿真模型,计算出火炮后坐运动过程中的后坐速度、后坐阻力和后坐位移,分析了电涡流阻尼器关键尺寸参数和同轴偏心误差对阻尼特性的影响。仿真结果表明:在炮膛合力和复进机力共同的载荷激励作用下,该电涡流阻尼器可以满足火炮后坐运动特性。

Simulation Analysis of Dynamic Characteristics of Halbach Array Eddy Current Damper Under Strong Impact Load

Aiming at the problems of recoil liquid losing effectiveness and spilling of traditional artillery recoil brake,the magnetic field distribution characteristics of the linear Halbach array were analyzed by simulation,and an eddy current damper(ECD)structure based on the Halbach permanent magnet array was proposed.By introducing the recoil equation of artillery,the mathematical analysis model of the eddy current damping force of ECD was established.The dynamics finite element simulation model of ECD was established by using Comsol software.The recoil velocity,recoil resistance and recoil displacement during the recoil of the artillery were calculated.The effects of the key dimension parameters of ECD and the coaxial eccentricity error on the damping characteristics were analyzed.The simulation results show that the ECD can satisfy the recoil characteristics of the artillery under the load excitation of combining bore resultant force and the counter-recoil force.