Stochastic modeling and vibration analysis of rotating beams considering geometric random fields
| Autor: | Hong Hee Yoo, Chan Kyu Choi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Random field
Acoustics and Ultrasonics business.industry Mechanical Engineering Mathematical analysis Equations of motion 02 engineering and technology Structural engineering Condensed Matter Physics 01 natural sciences 010101 applied mathematics Vibration 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Stochastic simulation Random vibration Transient response 0101 mathematics business Spectral method Beam (structure) Mathematics |
| Zdroj: | Journal of Sound and Vibration. 388:105-122 |
| ISSN: | 0022-460X |
| DOI: | 10.1016/j.jsv.2016.10.030 |
| Popis: | Geometric parameters such as the thickness and width of a beam are random for various reasons including manufacturing tolerance and operation wear. Due to these random parameter properties, the vibration characteristics of the structure are also random. In this paper, we derive equations of motion to conduct stochastic vibration analysis of a rotating beam using the assumed mode method and stochastic spectral method. The accuracy of the proposed method is first verified by comparing analysis results to those obtained with Monte-Carlo simulation (MCS). The efficiency of the proposed method is then compared to that of MCS. Finally, probability densities of various modal and transient response characteristics of rotating beams are obtained with the proposed method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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