Optimization and Resistance Characteristics of Permanent Magnet Eddy Current Damper under Intensive Impact Load

doi:10.3969/j.issn.1000-1093.2018.04.005

Abstract

Abstract: To study and weaken the demagnetization effect of permanent magnet cylindrical eddy current damper on recoil resistance under intensive impact load, the recoil resistance in different number of permanent magnets is determined using permanent magnet equivalent model according to the working principle of the damper. An eddy current damper dynamic model is established to address the demagnetization effect. The influences of magnetic iron, inner and outer cylinder thicknesses on the resistance characteristics are analyzed. A recoil resistance optimization model is established by segmenting the inner cylinder. Optimized Latin hypercube is designed for experiment. Radial basis function neural network and NSGA-II algorithm are used for multi-objective optimization. The results indicate that platform effect of optimized recoil resistance curve is enhanced. The maximal recoil resistances are reduced by 12.6% and 2.3%, respectively, when demagnetization effect and the recuperator force dominate. The proposed optimization method and objects effectively weaken the demagnetization effect of eddy current damper in the recoil process.Key

Key words: gun, recoilmechanism, eddycurrentrecoilmechanism, intensiveimpactload, demagnetizationeffect, resistancecharacteristic, optimization

CLC Number:

TJ303⁺.4

LI Zi-xuan， YANG Guo-lai， SUN Quan-zhao， WANG Li-qun， YU Qing-bo. Optimization and Resistance Characteristics of Permanent Magnet Eddy Current Damper under Intensive Impact Load[J]. Acta Armamentarii, 2018, 39(4): 664-671.

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第39卷
第4期2018 年4月兵工学报ACTA
ARMAMENTARIIVol.39No.4Apr.2018

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