liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Material and microslip damping in a rotor taking gravity and anisotropic bearings into account
Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Machine Design .
2001 (English)In: Journal of Vibration and Acoustics-Transactions of the ASME, ISSN 1048-9002, Vol. 123, no 1, 30-35 p.Article in journal (Refereed) Published
Abstract [en]

The paper is concerned with material and microslip damping in a rotor The horizontal rotor is carried by anisotropic bearings, which means that the shaft feels three different frequencies, the rotational frequency and the difference and the sum of the rotational and vibrational frequencies. When material damping is studied, these three frequencies lead to three different equivalent viscous damping constants and the dissipated energy can be solved analytically. The rotor slot wedges in a turbine generator are used as an example of microslip damping. In this case the damping is nonlinear and the results are obtained through numerical simulations. The results show that these two different internal damping sources give both similarities and dissimilarities. The sign change and different magnitude of the dissipated energy running sub- or supercritical are the same. However the dissipated energy for material damping is nor affected by gravity which microslip damping is.

Place, publisher, year, edition, pages
2001. Vol. 123, no 1, 30-35 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-49393OAI: diva2:270289
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-13

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Wettergren, Håkan
By organisation
The Institute of TechnologyMachine Design
In the same journal
Journal of Vibration and Acoustics-Transactions of the ASME
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 18 hits
ReferencesLink to record
Permanent link

Direct link