Details
| Original language | English |
|---|---|
| Title of host publication | 2008 Proceedings of the ASME Turbo Expo |
| Subtitle of host publication | Power for Land, Sea, and Air |
| Pages | 425-433 |
| Number of pages | 9 |
| Edition | PART A |
| Publication status | E-pub ahead of print - 3 Aug 2009 |
| Event | 2008 ASME Turbo Expo - Berlin, Germany Duration: 9 Jun 2008 → 13 Jun 2008 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Number | PART A |
| Volume | 5 |
Abstract
Rotating blades are subjected to vibrations caused by excitation forces due to a non-homogeneous pressure field of the fluid. Therefore, damping devices like tip shrouds are implemented which reduce the vibrational amplitude and apply additional stiffness and damping to the structure. To predict the resulting vibration response and stresses, a three dimensional contact model has been developed to determine the friction forces. The resulting equations of motion are solved in the frequency domain. The developed method has been implemented in a nonlinear forced response code called DATAR ' designed for the gas turbine division of Siemens Energy. In this paper, the transfer of common Finite Element models of bladings with shrouds or underplatform dampers to the DATAR code is presented. A mapping procedure based on Finite Element shape functions is used to couple the model with the regular contact grid used in the nonlinear vibration analysis performed with the DATAR code. As a practical example, the vibration behavior of a gas turbine blad-ing with interlocked shrouds is investigated with the developed method.
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air. PART A. ed. 2009. p. 425-433 (Proceedings of the ASME Turbo Expo; Vol. 5, No. PART A).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Nonlinear vibration analysis of gas turbine bladings with shroud coupling
AU - Hohl, Andreas
AU - Siewert, Christian
AU - Panning, Lars
AU - Kayser, Andreas
PY - 2009/8/3
Y1 - 2009/8/3
N2 - Rotating blades are subjected to vibrations caused by excitation forces due to a non-homogeneous pressure field of the fluid. Therefore, damping devices like tip shrouds are implemented which reduce the vibrational amplitude and apply additional stiffness and damping to the structure. To predict the resulting vibration response and stresses, a three dimensional contact model has been developed to determine the friction forces. The resulting equations of motion are solved in the frequency domain. The developed method has been implemented in a nonlinear forced response code called DATAR ' designed for the gas turbine division of Siemens Energy. In this paper, the transfer of common Finite Element models of bladings with shrouds or underplatform dampers to the DATAR code is presented. A mapping procedure based on Finite Element shape functions is used to couple the model with the regular contact grid used in the nonlinear vibration analysis performed with the DATAR code. As a practical example, the vibration behavior of a gas turbine blad-ing with interlocked shrouds is investigated with the developed method.
AB - Rotating blades are subjected to vibrations caused by excitation forces due to a non-homogeneous pressure field of the fluid. Therefore, damping devices like tip shrouds are implemented which reduce the vibrational amplitude and apply additional stiffness and damping to the structure. To predict the resulting vibration response and stresses, a three dimensional contact model has been developed to determine the friction forces. The resulting equations of motion are solved in the frequency domain. The developed method has been implemented in a nonlinear forced response code called DATAR ' designed for the gas turbine division of Siemens Energy. In this paper, the transfer of common Finite Element models of bladings with shrouds or underplatform dampers to the DATAR code is presented. A mapping procedure based on Finite Element shape functions is used to couple the model with the regular contact grid used in the nonlinear vibration analysis performed with the DATAR code. As a practical example, the vibration behavior of a gas turbine blad-ing with interlocked shrouds is investigated with the developed method.
UR - http://www.scopus.com/inward/record.url?scp=69949166280&partnerID=8YFLogxK
U2 - 10.1115/GT2008-50787
DO - 10.1115/GT2008-50787
M3 - Conference contribution
AN - SCOPUS:69949166280
SN - 9780791843154
T3 - Proceedings of the ASME Turbo Expo
SP - 425
EP - 433
BT - 2008 Proceedings of the ASME Turbo Expo
T2 - 2008 ASME Turbo Expo
Y2 - 9 June 2008 through 13 June 2008
ER -