Zobrazeno 1 - 10
of 37
pro vyhledávání: '"· Under-platform damper"'
Autor:
Moneta Grzegorz
Publikováno v:
Fatigue of Aircraft Structures, Vol 2022, Iss 14, Pp 69-82 (2023)
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 envir
Externí odkaz:
https://doaj.org/article/5940ca1a750c4649b8f4d42cf2e46652
Publikováno v:
Journal of Hebei University of Science and Technology, Vol 43, Iss 4, Pp 339-346 (2022)
In order to improve the design level of the under-platform damper of aero-engine turbine blades,a B-B type under-platform damper structure based on stiffness design was proposed by comparing with structures of the B-G (blade to ground) type damper an
Externí odkaz:
https://doaj.org/article/8b75f4f9a16a4410aaf1b7ca4f6b8066
Publikováno v:
Applied Sciences, Vol 13, Iss 4, p 2128 (2023)
Analysis of the vibration reduction characteristics of shock absorbers is crucial for engines. In this study, the fractal theory was applied to the contact surface of an under-platform damper (UPD), and the influence of the excitation force in the sa
Externí odkaz:
https://doaj.org/article/5d2811f08e6140d39c9bee70b0a776e1
Publikováno v:
Applied Sciences, Vol 9, Iss 19, p 4181 (2019)
High-cycle fatigue (HCF) failure of the turbine blades of aero-engines caused by high vibrational stresses is one of the main causes of aero-engine incidents [...]
Externí odkaz:
https://doaj.org/article/a7c74e9b104449e6bf7ba6f8850e230f
Akademický článek
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Publikováno v:
International Journal of Solids and Structures. 202:521-531
Dry friction is widely incorporated in turbomachinery, in the form of under-platform dampers, to limit vibrations at resonance and reduce risks of high-cycle fatigue failures. Most of the test rigs that were used to investigate the behavior of under-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4daad1ed87715fbeb5eb2a0a44e8474
https://doi.org/10.1016/j.ijsolstr.2020.07.002
https://doi.org/10.1016/j.ijsolstr.2020.07.002
Akademický článek
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Autor:
Muhammad Umer, Daniele Botto
Publikováno v:
Mechanical Systems and Signal Processing. 100:344-359
In the field of turbomachinery, vibration amplitude is often reduced by dissipating the kinetic energy of the blades with devices that utilize dry friction. Under-platform dampers, for example, are often placed in the underside of two consecutive tur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44baf8e3fd77ccea50cf5d67e780d7f7
https://doi.org/10.1016/j.ymssp.2017.07.046
https://doi.org/10.1016/j.ymssp.2017.07.046
Autor:
Muhammad Umer, Daniele Botto
In the field of turbomachinery, one of the prime design aspects is to avoid high cycle fatigue failure commonly caused by fluctuating forces on the blades. These fluctuating forces render a high amplitude vibration of the blades that can be mitigated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb07b93cb3b95931018ddbe6f3ba7bc7
http://hdl.handle.net/11583/2735214
http://hdl.handle.net/11583/2735214
Publikováno v:
Nonlinear Dynamics and Control ISBN: 9783030347468
Under-platform damper is used to attenuate resonant response and further prevent high cycle fatigue failure of turbine blades. The aim of this work is to improve the representation of contact interfaces in modeling an asymmetrical under-platform damp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::625207822330b1143d8bb09db10a8afb
http://hdl.handle.net/11583/2819912
http://hdl.handle.net/11583/2819912