Analysis of stationary displacement patterns in rotating machinery subject to local harmonic excitation
| Autor: | Tomas Österlind, Leif Kari, Cornel Mihai Nicolescu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Rotating unbalance Acoustics and Ultrasonics business.industry Rotor (electric) Mechanical Engineering Coordinate system Rotational speed 02 engineering and technology Mechanics Condensed Matter Physics 01 natural sciences Displacement (vector) law.invention Vibration 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Control theory law 0103 physical sciences Milling cutter Turbomachinery business 010301 acoustics |
| Zdroj: | Journal of Sound and Vibration. 389:224-235 |
| ISSN: | 0022-460X |
| DOI: | 10.1016/j.jsv.2016.11.017 |
| Popis: | Rotor vibration and stationary displacement patterns observed in rotating machineries subject to local harmonic excitation are analysed for improved understanding and dynamic characterization. The analysis stresses the importance of coordinate transformation between rotating and stationary frame of reference for accurate results and estimation of dynamic properties. A generic method which can be used for various rotor applications such as machine tool spindle and turbo machinery vibration is presented. The phenomenon shares similarities with stationary waves in rotating disks though focuses on vibration in shafts. The paper further proposes a graphical tool, the displacement map, which can be used for selection of stable rotational speed for rotating machinery. The results are validated through simulation of dynamic response of a milling cutter, which is a typical example of a variable speed rotor operating under different load conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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