Vibration prediction of bladed disks coupled by friction joints

M Krack, L Salles, F Thouverez - Archives of Computational Methods in …, 2017 - Springer
The present review article addresses the vibration behavior of bladed disks encountered eg
in aircraft engines as well as industrial gas and steam turbines. The utilization of the …

Modelling the nonlinear behaviour of an underplatform damper test rig for turbine applications

L Pesaresi, L Salles, A Jones, JS Green… - … Systems and Signal …, 2017 - Elsevier
Underplatform dampers (UPD) are commonly used in aircraft engines to mitigate the risk of
high-cycle fatigue failure of turbine blades. The energy dissipated at the friction contact …

[HTML][HTML] The impact of fretting wear on structural dynamics: Experiment and Simulation

A Fantetti, LR Tamatam, M Volvert, I Lawal, L Liu… - Tribology …, 2019 - Elsevier
This paper investigates the effects of fretting wear on frictional contacts. A high frequency
friction rig is used to measure the evolution of hysteresis loops, friction coefficient and …

Dynamics of dry friction damping in gas turbines: literature survey

A Rizvi, CW Smith, R Rajasekaran… - Journal of Vibration …, 2016 - journals.sagepub.com
Vibrating structures, such as gas turbine engines, are assemblages of multiple components
interfaced with each other through physical contact. The friction produced at these contact …

Traction-based multi-scale nonlinear dynamic modeling of bolted joints: Formulation, application, and trends in micro-scale interface evolution

NN Balaji, W Chen, MRW Brake - Mechanical Systems and Signal …, 2020 - Elsevier
A new framework for modeling the dynamics of bolted structures is proposed that considers
the nonlinear interfacial modeling of bolted structures using multi-scale traction-based …

A micro-slip friction modeling approach and its application in underplatform damper kinematics

D Li, D Botto, C Xu, T Liu, M Gola - International Journal of Mechanical …, 2019 - Elsevier
Underplatform dampers are widely used to dissipate vibration energy and to further prevent
high cycle fatigue in turbine blade systems. The purpose of this work is to improve the …

Nonlinear dynamics of mechanical systems with friction contacts: coupled static and dynamic multi-harmonic balance method and multiple solutions

S Zucca, CM Firrone - Journal of Sound and Vibration, 2014 - Elsevier
Real applications in structural mechanics where the dynamic behavior is linear are rare.
Usually, structures are made of components assembled together by means of joints whose …

On the non-uniqueness of friction forces and the systematic computation of dynamic response boundaries for turbine bladed disks with contacts

E Ferhatoglu, S Zucca - Mechanical Systems and Signal Processing, 2021 - Elsevier
Turbine bladed disks with friction contacts may have a large scattering of dynamic response
amplitudes in laboratory conditions even for two consecutive tests. The non-repeatability of …

A modified IWAN model for micro-slip in the context of dampers for turbine blade dynamics

D Li, C Xu, T Liu, MM Gola, L Wen - Mechanical Systems and Signal …, 2019 - Elsevier
In turbine blade systems, under-platform dampers are widely used to attenuate resonant
vibrations and prevent high cycle fatigue failure depending on friction contact. To effectively …

Design of a high-precision, flat-on-flat fretting test apparatus with high temperature capability

M Lavella, D Botto, MM Gola - Wear, 2013 - Elsevier
In jet engines the blade resonant vibration amplitude is normally reduced by increasing the
structural damping by using, for example, tip shrouds. These devices dissipate the energy …