Open AccessFlexural fluctuations of the rotors of knife refiners
Author(s) -
С. Н. Вихарев,
Alexander Sannikov,
M Zinatov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/734/1/012040
Subject(s) - rotor (electric) , vibration , mill , flexural strength , gyroscope , cantilever , moment (physics) , bearing (navigation) , materials science , mechanics , structural engineering , mechanical engineering , engineering , physics , acoustics , classical mechanics , aerospace engineering , astronomy
The subject of the study is the flexural fluctuations of the rotors of knife refiners. The dynamic and mathematical models of rotors of disk mills are developed. As a result of research, a method for vibration calculation of rotors is proposed and tested. Research was also conducted using the Ansys software package. The error in determining the lower frequencies of free fluctuations of the mill rotors does not exceed 9%. Failure to take into account the elastic compliance of the rotor bearings leads to an error in determining the frequencies of free flexural fluctuations by no more than 15%, and the gyroscopic moment increases the above frequencies by no more than 25%. The cantilever arrangement of the disk reduces the frequencies of free fluctuations of the mill rotor by 1.1 - 1.4 times in comparison with the inter-support arrangement. The developed calculation procedure can be used in other industries, for example, mining and metallurgy.