Details
| Original language | English |
|---|---|
| Title of host publication | Conferece Proceedings - European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC |
| Publication status | Published - 23 Apr 2023 |
| Event | 15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023 - Budapest, Hungary Duration: 24 Apr 2023 → 28 Apr 2023 |
Publication series
| Name | Proceedings of ...European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC |
|---|---|
| ISSN (Print) | 2313-0067 |
Abstract
In this work, the vibration response of an academic free-standing turbine blisk is analysed regarding transient resonance passages. Measurement data is recorded using strain gauges and tip timing to evaluate the blades first bending mode both linearly and with two types of underplatform dampers. These results are validated against steady-state responses and show good agreement towards each other. To examine the effects of a transient resonance passage, response functions of each blade are evaluated both with and without the underplatform dampers. It is shown that friction damping is able to inhibit any appearance of a transient ring-down. Additionally a multi-mass oscillator model with frictional contacts is analysed, that qualitatively exhibits the same dynamics as the measurements. Due to geometric mistuning all blades exhibit different vibration responses. This can lead to a transient amplitude amplification, which is observed on several blades. Analogously, this phenomenon can be mitigated by friction damping.
Keywords
- GEOMETRIC MISTUNING, TRANSIENT RESONANCE PASSAGE, TURBINE BLADE VIBRATION MEASUREMENT, UNDERPLATFORM DAMPER
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Mechanics of Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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Conferece Proceedings - European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC. 2023. (Proceedings of ...European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Transient resonance passage of a mistuned bladed disk with and without underplatform dampers
AU - Brinkmann, K.
AU - Hoffmann, T.
AU - Panning-Von Scheidt, L.
AU - Stüer, H.
N1 - Publisher Copyright: Copyright © by the Authors.
PY - 2023/4/23
Y1 - 2023/4/23
N2 - In this work, the vibration response of an academic free-standing turbine blisk is analysed regarding transient resonance passages. Measurement data is recorded using strain gauges and tip timing to evaluate the blades first bending mode both linearly and with two types of underplatform dampers. These results are validated against steady-state responses and show good agreement towards each other. To examine the effects of a transient resonance passage, response functions of each blade are evaluated both with and without the underplatform dampers. It is shown that friction damping is able to inhibit any appearance of a transient ring-down. Additionally a multi-mass oscillator model with frictional contacts is analysed, that qualitatively exhibits the same dynamics as the measurements. Due to geometric mistuning all blades exhibit different vibration responses. This can lead to a transient amplitude amplification, which is observed on several blades. Analogously, this phenomenon can be mitigated by friction damping.
AB - In this work, the vibration response of an academic free-standing turbine blisk is analysed regarding transient resonance passages. Measurement data is recorded using strain gauges and tip timing to evaluate the blades first bending mode both linearly and with two types of underplatform dampers. These results are validated against steady-state responses and show good agreement towards each other. To examine the effects of a transient resonance passage, response functions of each blade are evaluated both with and without the underplatform dampers. It is shown that friction damping is able to inhibit any appearance of a transient ring-down. Additionally a multi-mass oscillator model with frictional contacts is analysed, that qualitatively exhibits the same dynamics as the measurements. Due to geometric mistuning all blades exhibit different vibration responses. This can lead to a transient amplitude amplification, which is observed on several blades. Analogously, this phenomenon can be mitigated by friction damping.
KW - GEOMETRIC MISTUNING
KW - TRANSIENT RESONANCE PASSAGE
KW - TURBINE BLADE VIBRATION MEASUREMENT
KW - UNDERPLATFORM DAMPER
UR - http://www.scopus.com/inward/record.url?scp=85177651532&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85177651532
T3 - Proceedings of ...European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC
BT - Conferece Proceedings - European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC
T2 - 15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023
Y2 - 24 April 2023 through 28 April 2023
ER -