<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Blade vibrations in aircraft engines are a significant challenge that must be overcome during the design and development of modern turbine engines. Vibrations lead to cyclic displacements and result in alternating stress and strain in undesired environments (high temperatures, erosion, corrosion of the surface, etc.). Under resonance conditions, stress amplitudes can increase and exceed their safety limits, and in extreme cases, can lead to engine failure. One method to reduce resonance vibrations is to increase damping in the turbine assembly. This paper presents and describes vibration damping sources in the turbine, including aerodynamic, material, and friction damping. Additionally, typical damping values for each damping component are presented and compared.</p>
</abstract>

Blade vibrations in aircraft engines are a significant challenge that must be overcome during the design and development of modern turbine engines. Vibrations lead to cyclic displacements and result in alternating stress and strain in undesired environments (high temperatures, erosion, corrosion of the surface, etc.). Under resonance conditions, stress amplitudes can increase and exceed their safety limits, and in extreme cases, can lead to engine failure. One method to reduce resonance vibrations is to increase damping in the turbine assembly. This paper presents and describes vibration damping sources in the turbine, including aerodynamic, material, and friction damping. Additionally, typical damping values for each damping component are presented and compared.

Insight into Damping Sources in Turbines

Fatigue of Aircraft Structures

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Insight into Damping Sources in Turbines"}

Blade vibrations in aircraft engines are a significant challenge that must be overcome during the design and development of modern turbine engines. Vibrations...

Insight into Damping Sources in Turbines

Article Category: research article

Published Online: Nov 28, 2023

Page range: 69 - 82

DOI: https://doi.org/10.2478/fas-2022-0006

Keywords
vibrations, blade, gas turbine, turbine engine, damping, FEM, Finite Element Method, transient analysis, explicit, friction damping, under-platform damper, optimization, sensitivity analysis

© 2022 Grzegorz Moneta, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Insight into Damping Sources in Turbines

Article Category: research article

Published Online: Nov 28, 2023

Page range: 69 - 82

DOI: https://doi.org/10.2478/fas-2022-0006

Keywordsvibrations, blade, gas turbine, turbine engine, damping, FEM, Finite Element Method, transient analysis, explicit, friction damping, under-platform damper, optimization, sensitivity analysis

© 2022 Grzegorz Moneta, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
vibrations, blade, gas turbine, turbine engine, damping, FEM, Finite Element Method, transient analysis, explicit, friction damping, under-platform damper, optimization, sensitivity analysis