Details
| Original language | English |
|---|---|
| Pages (from-to) | 236-252 |
| Number of pages | 17 |
| Journal | Journal of Sound and Vibration |
| Volume | 436 |
| Early online date | 17 Sept 2018 |
| Publication status | Published - 8 Dec 2018 |
Abstract
A new experimental set-up is designed to perform a resonance passage. Hence, an accelerated traveling wave type excitation is created. Loudspeakers are used to perform a contactless excitation. With the designed test rig, the occurrence of TAMS can be demonstrated. The results are the first experimental proof that the maximum of a transient vibration response can exceed the maximum of the stationary vibration response of the same dynamic system.
Keywords
- Accelerated traveling wave, Mistuned structures, Resonance passage, Transient amplitude amplification, Transient vibration of nearby modes
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
- Engineering(all)
- Mechanical Engineering
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In: Journal of Sound and Vibration, Vol. 436, 08.12.2018, p. 236-252.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Transient amplitude amplification of mistuned structures:
T2 - An experimental validation
AU - Bonhage, Marius
AU - Adler, Jan Thore
AU - Kolhoff, Christoph
AU - Hentschel, Olaf
AU - Schlesier, Klaus-Dieter
AU - Panning-von Scheidt, Lars
AU - Wallaschek, Jörg
N1 - © 2018 Published by Elsevier Ltd.
PY - 2018/12/8
Y1 - 2018/12/8
N2 - Until now, only few works have dealt with the transient vibration response of bladed disks of turbomachinery. However, transient vibration of turbines has become more and more important due to the changes on the energy production sector. Recently, it has been theoretically demonstrated that the maximum amplitude of the resonance passage of mistuned blisks may even exceed the maximum amplitude of the steady-state response. This effect is called transient amplitude amplification of mistuned structures (TAMS). The phenomenon is investigated within this article. By using a lumped mass model, it is shown how the maximum amplitude of the steady-state solution may be exceeded by the maximum amplitude of the resonance passage. Further, the occurrence of transient amplitude amplification of mistuned structures is experimentally validated.A new experimental set-up is designed to perform a resonance passage. Hence, an accelerated traveling wave type excitation is created. Loudspeakers are used to perform a contactless excitation. With the designed test rig, the occurrence of TAMS can be demonstrated. The results are the first experimental proof that the maximum of a transient vibration response can exceed the maximum of the stationary vibration response of the same dynamic system.
AB - Until now, only few works have dealt with the transient vibration response of bladed disks of turbomachinery. However, transient vibration of turbines has become more and more important due to the changes on the energy production sector. Recently, it has been theoretically demonstrated that the maximum amplitude of the resonance passage of mistuned blisks may even exceed the maximum amplitude of the steady-state response. This effect is called transient amplitude amplification of mistuned structures (TAMS). The phenomenon is investigated within this article. By using a lumped mass model, it is shown how the maximum amplitude of the steady-state solution may be exceeded by the maximum amplitude of the resonance passage. Further, the occurrence of transient amplitude amplification of mistuned structures is experimentally validated.A new experimental set-up is designed to perform a resonance passage. Hence, an accelerated traveling wave type excitation is created. Loudspeakers are used to perform a contactless excitation. With the designed test rig, the occurrence of TAMS can be demonstrated. The results are the first experimental proof that the maximum of a transient vibration response can exceed the maximum of the stationary vibration response of the same dynamic system.
KW - Accelerated traveling wave
KW - Mistuned structures
KW - Resonance passage
KW - Transient amplitude amplification
KW - Transient vibration of nearby modes
UR - http://www.scopus.com/inward/record.url?scp=85053332276&partnerID=8YFLogxK
U2 - 10.1016/j.jsv.2018.07.031
DO - 10.1016/j.jsv.2018.07.031
M3 - Article
AN - SCOPUS:85053332276
VL - 436
SP - 236
EP - 252
JO - Journal of Sound and Vibration
JF - Journal of Sound and Vibration
SN - 0022-460X
ER -