Details
| Original language | English |
|---|---|
| Article number | 031016 |
| Journal | Journal of Engineering for Gas Turbines and Power |
| Volume | 143 |
| Issue number | 3 |
| Early online date | 11 Feb 2021 |
| Publication status | Published - Mar 2021 |
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 transienttype 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 2DOF linear system defined through the three parameters: damping ratio n, frequency mistuning Δ, rotor acceleration Σ. The analytic solutions are calculated through the multiple-scale method.
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Aerospace Engineering
- Energy(all)
- Energy Engineering and Power Technology
- Energy(all)
- Fuel Technology
- Energy(all)
- Nuclear Energy and Engineering
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In: Journal of Engineering for Gas Turbines and Power, Vol. 143, No. 3, 031016, 03.2021.
Research output: Contribution to journal › Article › Research
}
TY - JOUR
T1 - Key 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: Spanish Ministerio de-Ciencia, Innovacion y Universidades (Grant No. DPI2017-84700-R; Funder ID: 10.13039/ 100014440).
PY - 2021/3
Y1 - 2021/3
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 transienttype 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 2DOF linear system defined through the three parameters: damping ratio n, frequency mistuning Δ, rotor acceleration Σ. 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 transienttype 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 2DOF linear system defined through the three parameters: damping ratio n, frequency mistuning Δ, rotor acceleration Σ. The analytic solutions are calculated through the multiple-scale method.
UR - http://www.scopus.com/inward/record.url?scp=85107267052&partnerID=8YFLogxK
U2 - 10.1115/1.4049501
DO - 10.1115/1.4049501
M3 - Article
VL - 143
JO - Journal of Engineering for Gas Turbines and Power
JF - Journal of Engineering for Gas Turbines and Power
SN - 0742-4795
IS - 3
M1 - 031016
ER -