Details
| Original language | English |
|---|---|
| Article number | 021019 |
| Number of pages | 9 |
| Journal | Journal of Engineering for Gas Turbines and Power |
| Volume | 141 |
| Issue number | 2 |
| Early online date | 4 Oct 2018 |
| Publication status | Published - 1 Feb 2019 |
Abstract
Since the first nonlinear forced response validation of frictionally coupled bladed disks, more than 20 years have passed, and numerous incremental modeling and simulation refinements were proposed. With the present work, we intend to assess how much we have improved since then. To this end, we present findings of an exhaustive validation campaign designed to systematically validate the nonlinear vibration prediction for the different friction joints at blade roots, interlocked shrouds and under-platform dampers. An original approach for the identification of crucial contact properties is developed. By using the dynamic Lagrangian contact formulation and a refined spatial contact discretization, it is demonstrated that the delicate identification of contact stiffness properties can be circumvented. The friction coefficient is measured in a separate test, and determined as unique function of temperature, preload, wear state. Rotating rig and engine measurements are compared against simulations with the tool OrAgL, developed jointly by the Leibniz Universität Hannover and the University of Stuttgart, in which state-ofthe- art component mode synthesis (CMS) and harmonic balance methods (HBMs) are implemented.
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. 141, No. 2, 021019, 01.02.2019.
Research output: Contribution to journal › Article › Research
}
TY - JOUR
T1 - Rig and Engine Validation of the Nonlinear Forced Response Analysis Performed by the Tool OrAgL
AU - Hartung, Andreas
AU - Hackenberg, Hans-Peter
AU - Krack, Malte
AU - Gross, Johann
AU - Heinze, Torsten
AU - Panning-von Scheidt, Lars
N1 - Funding information: The partial funding of the work presented in this paper was performed through the German Federal Ministry for Economic Affairs and Energy, Aviation Research Program V/1st Call, project “Integrally Designed Turbine with Enhanced Life Time.” The authors would like to thank MTU Aero Engines AG for the permission to publish this paper. The partial funding of the work presented in this paper through the German Federal Ministry for Economic Affairs and Energy, Aviation Research Program V/1st Call, project “Integrally Designed Turbine with Enhanced Life Time” is gratefully acknowledged, as well as the contribution to the project of Gert Kemmer, former employer of MTU Aero Engines AG.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Since the first nonlinear forced response validation of frictionally coupled bladed disks, more than 20 years have passed, and numerous incremental modeling and simulation refinements were proposed. With the present work, we intend to assess how much we have improved since then. To this end, we present findings of an exhaustive validation campaign designed to systematically validate the nonlinear vibration prediction for the different friction joints at blade roots, interlocked shrouds and under-platform dampers. An original approach for the identification of crucial contact properties is developed. By using the dynamic Lagrangian contact formulation and a refined spatial contact discretization, it is demonstrated that the delicate identification of contact stiffness properties can be circumvented. The friction coefficient is measured in a separate test, and determined as unique function of temperature, preload, wear state. Rotating rig and engine measurements are compared against simulations with the tool OrAgL, developed jointly by the Leibniz Universität Hannover and the University of Stuttgart, in which state-ofthe- art component mode synthesis (CMS) and harmonic balance methods (HBMs) are implemented.
AB - Since the first nonlinear forced response validation of frictionally coupled bladed disks, more than 20 years have passed, and numerous incremental modeling and simulation refinements were proposed. With the present work, we intend to assess how much we have improved since then. To this end, we present findings of an exhaustive validation campaign designed to systematically validate the nonlinear vibration prediction for the different friction joints at blade roots, interlocked shrouds and under-platform dampers. An original approach for the identification of crucial contact properties is developed. By using the dynamic Lagrangian contact formulation and a refined spatial contact discretization, it is demonstrated that the delicate identification of contact stiffness properties can be circumvented. The friction coefficient is measured in a separate test, and determined as unique function of temperature, preload, wear state. Rotating rig and engine measurements are compared against simulations with the tool OrAgL, developed jointly by the Leibniz Universität Hannover and the University of Stuttgart, in which state-ofthe- art component mode synthesis (CMS) and harmonic balance methods (HBMs) are implemented.
UR - http://www.scopus.com/inward/record.url?scp=85055248593&partnerID=8YFLogxK
U2 - 10.1115/1.4041160
DO - 10.1115/1.4041160
M3 - Article
VL - 141
JO - Journal of Engineering for Gas Turbines and Power
JF - Journal of Engineering for Gas Turbines and Power
SN - 0742-4795
IS - 2
M1 - 021019
ER -