DIC Measurement of the Kinematics of a Friction Damper for Turbine Applications
| Autor: | Merten Stender, Christoph W. Schwingshackl, Luca Pesaresi, V. Ruffini |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Turbine blade business.industry Fatigue testing 02 engineering and technology Kinematics Structural engineering 021001 nanoscience & nanotechnology Turbine Damper law.invention Nonlinear system 020303 mechanical engineering & transports 0203 mechanical engineering Deflection (engineering) Control theory law 0210 nano-technology business |
| Zdroj: | Dynamics of Coupled Structures, Volume 4 ISBN: 9783319549293 |
| DOI: | 10.1007/978-3-319-54930-9_9 |
| Popis: | High cycle fatigue (HCF) caused by large resonant stresses is a common cause for turbine blades failure. Passive damping systems, such as friction dampers are often used by aero-engine manufacturers to reduce the resonant stresses and mitigate the risk of HCF. The presence of friction dampers makes the dynamics of the system highly nonlinear, due to the complex stick-slip and separation phenomena taking place at the contact interface. Due to this nonlinear behaviour, an accurate understanding of the operating deflection shapes is needed for an accurate stress prediction. |
| Databáze: | OpenAIRE |
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