Vibration analysis of paper machine’s asymmetric tube roll supported by spherical roller bearings

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-05-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
17
688-704
Series
Mechanical Systems and Signal Processing, Volume 104
Abstract
Abstract This paper presents a simulation method that is used to study subcritical vibrations of a tube roll in a paper machine. This study employs asymmetric 3D beam elements based on the Timoshenko beam theory. An asymmetric beam model accounts for varying stiffness and mass distributions. Additionally, a detailed rolling element bearing model defines the excitations arising from the set of spherical roller bearings at both ends of the rotor. The results obtained from the simulation model are compared against the results from the measurements. The results indicate that the waviness of the bearing rolling surfaces contributes significantly to the subcritical vibrations while the asymmetric properties of the tube roll have only a fractional effect on the studied vibrations.
Description
Keywords
Paper machine roll, Asymmetric rotor, Spherical roller bearings, Subcritical vibrations, Paper machine bearing defect, Bearing waviness
Other note
Citation
Heikkinen, J E, Ghalamchi, B, Viitala, R, Sopanen, J, Juhanko, J, Mikkola, A & Kuosmanen, P 2018, ' Vibration analysis of paper machine’s asymmetric tube roll supported by spherical roller bearings ', Mechanical Systems and Signal Processing, vol. 104, pp. 688-704 . https://doi.org/10.1016/j.ymssp.2017.11.030