Analysis of Damping damping Characteristics characteristics of Magnetorheological magnetorheological Damper dampers&nbsp;for the Aartillery Recoil recoil during Bore bore Period period

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (20) : 172-180.

Analysis of Damping damping Characteristics characteristics of Magnetorheological magnetorheological Damper dampers for the Aartillery Recoil recoil during Bore bore Period period

ZHANG Guang, WANG Huixing, WANG Jiong

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Abstract

MR Gel (MRG) has a certain anti settlement and long stability compared with MRF.Therefore, MRG is very suitable for recoil applications of a class of weapons, such as artillery, which can still meet the operation requirements after long time storage in peacetime.In order to study the influence of the mechanism of the micro magneto-mechanical properties of MRG on the damping mechanics of the macro-scopical output of the dampers, a parallel plate model for the mixed flow pattern of Couette shear flow and Poiseuille pressure flow was established.The theoretical analysis of the damper output damping was carried out.Finally, the controllability of the damper was analyzed by MRG-70 mechanical parameters.The results of the analysis shows that: the damping coefficient of the damper increases with dynamic viscosity, the effective working area of the piston, the length of the magnetic pole and the Bingham coefficient; in contrast, it decreases with the square of the width of the damped channel and the dimensionless width of the pre-yield plunger.MR damper was controllable to recoil at the beginning of the process of bore period, and the very small energy input (0-131 mT) can achieve a wide controllable range.

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MR gel / reverse recoil / damping coefficient / mixed flow

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ZHANG Guang, WANG Huixing, WANG Jiong. Analysis of Damping damping Characteristics characteristics of Magnetorheological magnetorheological Damper dampers for the Aartillery Recoil recoil during Bore bore Period period[J]. Journal of Vibration and Shock, 2019, 38(20): 172-180

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