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

Research output: Contribution to journalArticle

Details

Original languageEnglish
Pages (from-to)688-704
Number of pages17
JournalMechanical Systems and Signal Processing
Volume104
StatePublished - 1 May 2018
MoE publication typeA1 Journal article-refereed

Researchers

Research units

  • Lappeenranta University of Technology

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.

    Research areas

  • Paper machine roll, Asymmetric rotor, Spherical roller bearings, Subcritical vibrations, Paper machine bearing defect, Bearing waviness

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