Details
| Original language | English |
|---|---|
| Title of host publication | Structures and Dynamics |
| Subtitle of host publication | Structural Mechanics, Vibration, and Damping; Supercritical CO2 |
| Publisher | American Society of Mechanical Engineers(ASME) |
| ISBN (electronic) | 9780791884232 |
| Publication status | Published - 11 Jan 2021 |
| Event | ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, GT 2020 - online, Virtual, Online Duration: 21 Sept 2020 → 25 Sept 2020 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Volume | 11 |
Abstract
The dynamic behavior of bladed disks in resonance crossing has been intensively investigated in the community of turbomachinery, addressing the attention to (1) the transient-type response that appear when the resonance is crossed with a finite sweep rate and (2) the localization of the vibration in the disk due to the blade mistuning. In real conditions, the two mentioned effects coexist and can interact in a complex manner. This paper investigates the problem by means of analytic solutions obtained through asymptotic expansions, as well as numerical simulations. The mechanical system is assumed as simple as possible: a 2-dof linear system defined through the three parameters: damping ratio ξ, frequency mistuning Δ, rotor acceleration Ω. The analytic solutions are calculated through the multiple-scale method.
ASJC Scopus subject areas
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Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2. American Society of Mechanical Engineers(ASME), 2021. (Proceedings of the ASME Turbo Expo; Vol. 11).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Identification of the essential features of the transient amplification of mistuned systems
AU - Carassale, Luigi
AU - Denoël, Vincent
AU - Martel, Carlos
AU - Panning-von Scheidt, Lars
N1 - Funding Information: The work of Carlos Martel has been supported by the Spanish Ministerio de Ciencia, Innovación y Universidades under grant DPI2017-84700-R.
PY - 2021/1/11
Y1 - 2021/1/11
N2 - The dynamic behavior of bladed disks in resonance crossing has been intensively investigated in the community of turbomachinery, addressing the attention to (1) the transient-type response that appear when the resonance is crossed with a finite sweep rate and (2) the localization of the vibration in the disk due to the blade mistuning. In real conditions, the two mentioned effects coexist and can interact in a complex manner. This paper investigates the problem by means of analytic solutions obtained through asymptotic expansions, as well as numerical simulations. The mechanical system is assumed as simple as possible: a 2-dof linear system defined through the three parameters: damping ratio ξ, frequency mistuning Δ, rotor acceleration Ω. The analytic solutions are calculated through the multiple-scale method.
AB - The dynamic behavior of bladed disks in resonance crossing has been intensively investigated in the community of turbomachinery, addressing the attention to (1) the transient-type response that appear when the resonance is crossed with a finite sweep rate and (2) the localization of the vibration in the disk due to the blade mistuning. In real conditions, the two mentioned effects coexist and can interact in a complex manner. This paper investigates the problem by means of analytic solutions obtained through asymptotic expansions, as well as numerical simulations. The mechanical system is assumed as simple as possible: a 2-dof linear system defined through the three parameters: damping ratio ξ, frequency mistuning Δ, rotor acceleration Ω. The analytic solutions are calculated through the multiple-scale method.
UR - http://www.scopus.com/inward/record.url?scp=85099787260&partnerID=8YFLogxK
U2 - 10.1115/GT2020-15693
DO - 10.1115/GT2020-15693
M3 - Conference contribution
AN - SCOPUS:85099787260
T3 - Proceedings of the ASME Turbo Expo
BT - Structures and Dynamics
PB - American Society of Mechanical Engineers(ASME)
T2 - ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, GT 2020
Y2 - 21 September 2020 through 25 September 2020
ER -