NDLI: Vibration Analysis of Rotors in Rolling Contact: Laboratory Application and Scaling Group

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Cotsaftis, Michel Keskinen, Erno Miettinen, Juha Nuutila, Olli Salmenpera, Pekka
Copyright Year	2005
Abstract	It is mainly shown that, from their basic origin, vibration rotor modes are following a fixed pattern which has been theoretically analyzed. Various perturbation effects related to geometrical or physical defects are evaluated. Three main classes of modes are distinguished which correspond to different origins: global “outside” modes, “static” rotating rotor deformation modes, and real dynamic excited deformation modes representing the only power sink strictly related to rolls deformation. Good agreement is found for measurements from an industrial paper mill plant operating unit and for experimental observations from a laboratory experiment with large mode coupling. In both cases, most of observed modes are belonging to the first two classes, which can be cured aside by appropriate respective frame shielding and roll grinding. For the last class, a continuous three parameter transformation group is constructed so that the industrial unit and the university apparatus both belong to it, allowing to study properties of the first one on the more manageable second one. Because the modes are sharply peaked due to metal stiffness and weak damping, there exists broad rotation frequency windows where the total mode amplitude is small enough for the system to be preferentially operated.
Sponsorship	Design Engineering Division and Computers and Information in Engineering Division
Starting Page	1043
Ending Page	1052
Page Count	10
File Format	PDF
ISBN	0791847381
DOI	10.1115/DETC2005-84466
e-ISBN	0791837661
Volume Number	Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
Conference Proceedings	ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2005-09-24
Publisher Place	Long Beach, California, USA
Access Restriction	Subscribed
Subject Keyword	Roll vibrations observation Deformation modes analysis Transformation group Nip contact Damping Deformation Vibration Rotors Metals Rolling contact Stiffness Grinding Rotation Industrial papers Vibration analysis
Content Type	Text
Resource Type	Article

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