Magnetic Rheological Shock Damper Gun Recoil Applied Research In The Device

Magnetorheological fluid (MRF), a new smart material, does well in the vibration and impact control field. And success of MRF is apparent in many domains. So far, little research has been done about MR damper used in the weapon system. The aim of the current study is to identify the performance of the artillery recoil mechanism equipped with MR damper.The dissertation mainly includes:Firstly, based on the traditional artillery recoil mechanism, a recoil dynamic model is developed, and a simulation in MATLAB is completed by using the parameters of artillery. At last, it is explored that the effects of the artillery recoil resistance to the quiescence and firing stability of the artillery.Secondly, the MR damping technology is introduced, and then a linear model of the MR damper is deduced, choosing the Bingham model. At the same time, a nonlinear MR damper model under impact loads is developed in virtue of the hydrodynamics knowledge, and some effect parameters to the model are talked about.Thirdly, an effective design strategy is presented for a MR damper using the nonlinear flow model, and a MR damper is designed on the basis of the simulation result mentioned in the second part of this paper, and the recoil simulation of the recoil mechanism including a MR damper is completed with different input, τ_y. An open-loop control,ON-OFF control and a fuzzy control method are introduced to control the artillery recoil resistance.Lastly, a finite element method is adopted to analyze the magnetic field in the piston gap. In this process the magnetic-flux-leakage is taken into account. This simulation results are compared with the ones not considering the magnetic-flux-leakage. A method is introduced to improve the magnetic circuit in order to enhance the magnetic density in the piston gap, and some useful conclusions are obtained by comparing the simulation results.