Abstract
This paper investigates the dynamic analysis of a single-rotor shaft system with nonlinear elastic bearings at the ends mounted on viscoelastic suspension. A Timoshenko shaft model is utilized to incorporate the flexibility of the shaft; the rotor is considered to be rigid and located at the mid-span of the shaft. A nonlinear bearing pedestal model is assumed which has a cubic nonlinear spring and linear damping characteristics. The viscoelastic supports are modeled using the Kelvin-Voigt model. Free vibration is investigated based on the direct multiple scales method of one-to-one frequency-to-amplitude relationship using third order perturbation expansion. The results of the nonlinear analysis show that a limiting value of the internal damping coefficient of the shaft exists where the trend of the frequency-response curve switches.
Original language | English |
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Pages | 961-967 |
Number of pages | 7 |
DOIs | |
State | Published - 2003 |
Event | 2003 ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Chicago, IL, United States Duration: 2 Sep 2003 → 6 Sep 2003 |
Conference
Conference | 2003 ASME Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
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Country/Territory | United States |
City | Chicago, IL |
Period | 2/09/03 → 6/09/03 |