Investigation of physical properties of magnetic liquids in alternating and constant magnetic fields

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Gorlenko, A.O.^1 ; Shetz, S.P.^1

Bryansk State Technical University, 50 letiya Oktyabrya Blvd 7, Bryansk

241035, Russia^1

关键词: A-stability;    Alternating magnetic field;    Breakdown pressure;    Constant magnetic fields;    Magnetic field induction;    Magnetic liquids;    Shaft rotation;    Time factors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/4/042039/pdf
DOI  :  10.1088/1757-899X/327/4/042039

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The physical properties of magnetic fluids (hereinafter-MF) of three types are investigated: on the basis of mineral oil; silicone (silicone) liquid PES-5 and organic-fluorine compounds. The influence of the change in the MF physical properties at the moment of friction in the "shaft-bushing" coupling is determined, depending on the magnetic field induction (alternating magnetic field) and the shaft rotation frequency. The values of the breakdown pressure of magnetic fluids in the gap "shaft-pole tip" are determined at a constant magnetic field (permanent magnet), depending on the shaft rotation frequency as well as the time factor. To assess the MF stability, a stability factor that is capable of taking into account the structural changes in MF over time has been proposed.