Robustness in the dynamic response of turbine blades with under-platform dampers
File(s)
Published version
Author(s)
Fantetti, Alfredo
Mace, Tom
Jones, Adrian
Schwingshackl, Christoph
Type
Journal Article
Abstract
This article investigates the sources of uncertainty in the dynamic response of turbine blades equipped with under-platform dampers (UPDs). While UPDs play a critical role in energy dissipation and vibration control, their effectiveness is influenced by various uncertainty factors, including contact pressure distribution, manufacturing variability, wear, loading history and many others. Among these, uncertainty due to initial loading conditions and assembly procedures is particularly significant, as small variations in the damper’s positioning lead to measurable differences in the system’s response. Through a combination of experimental testing and numerical simulations, this study quantifies these effects and provides practical guidelines for improving the reliability of both measurements and simulations. The findings highlight the need for UPD designs that minimize assembly-induced variability, and stress the importance of accurately matching experimentally measured pressure distributions with numerical models.
Date Issued
2025-07-15
Date Acceptance
2025-05-18
Citation
Mechanical Systems and Signal Processing, 2025, 235
ISSN
0888-3270
Publisher
Elsevier BV
Start Page
112879
End Page
112879
Journal / Book Title
Mechanical Systems and Signal Processing
Volume
235
Copyright Statement
© 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
10.1016/j.ymssp.2025.112879
Publication Status
Published
Article Number
112879
Date Publish Online
2025-05-31