Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Muzio Gola"'
Publikováno v:
Mechanical Systems and Signal Processing. 121:14-30
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 predict dynamic response of blade-damper system, a numerical model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3765638236d63027d41312aa8b06b5c6
https://doi.org/10.1016/j.ymssp.2018.11.002
https://doi.org/10.1016/j.ymssp.2018.11.002
Publikováno v:
Journal of Vibration and Acoustics. 142
Underplatform dampers are used to limit the resonant vibration of turbine blades. In recent years, various strategies have been implemented to maximize their damping capability. Curved-flat dampers are preferred to ensure a predictable bilateral cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18d23fa05dff1b3fd1d6453d42015c02
https://doi.org/10.1115/1.4046954
https://doi.org/10.1115/1.4046954
The focus of this paper is on the direct experimental investigation of underplatform dampers, friction damping devices used on turbine bladed disks to limit resonant vibrations. Given the nonlinear and highly complex nature of dry friction, model val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ff61a3aa05cbbd481e58221257e087c
http://hdl.handle.net/11583/2786622
http://hdl.handle.net/11583/2786622
Autor:
Muzio Gola, Chiara Gastaldi
The purpose of this document is to continue along the line of research of the authors in the direction of developing an attractive tool for designers in the initial design phase of the damping of the turbomachinery blades. In particular, in order to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0de5c544fa3657aa01540d351717ffc
https://hdl.handle.net/11583/2974364
https://hdl.handle.net/11583/2974364
Friction between interfaces seriously affects the dynamics of structures with joints. An accurate description of the friction behavior, usually given in the form of hysteresis loops, is then a prerequisite for a successful prediction of the dynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dedf393a8be5efb53dc6df831c45091
http://hdl.handle.net/11583/2833352
http://hdl.handle.net/11583/2833352
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
Autor:
Chiara Gastaldi, Muzio Gola
Publikováno v:
Applied Sciences
Volume 11
Issue 11
Applied Sciences, Vol 11, Iss 5171, p 5171 (2021)
Volume 11
Issue 11
Applied Sciences, Vol 11, Iss 5171, p 5171 (2021)
A method called PCR (Platform Centered Reduction) is designed to more effectively perform complex iterative and nonlinear calculations required for the dynamic response of turbine blades damped by dry friction contacts between rigid dampers and airfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e576f6b8f02edb10e376a6da7d6b548a
https://doi.org/10.3390/app11115171
https://doi.org/10.3390/app11115171
Publikováno v:
Journal of Sound and Vibration. 493:115821
This paper proposes a wave-like hybrid damper containing both dry friction and piezoelectric damping mechanisms for thin-walled structures. The idea is to distribute piezoelectric material on the wave-like friction plate, so that the elastic deformat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a41174dae5cb4482f8040fcc89f306b
https://doi.org/10.1016/j.jsv.2020.115821
https://doi.org/10.1016/j.jsv.2020.115821
Autor:
Chiara Gastaldi, Muzio Gola
Publikováno v:
International Journal of Mechanical Sciences. :145-156
A crucial part of building reliable models for the design of under-platform dampers for turbine blades resides in the appropriate description of the contact conditions, both in the normal and in the tangential direction. The aim of this paper is to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46cf7820961c7861f0d7e11810d5576c
https://doi.org/10.1016/j.ijmecsci.2016.06.015
https://doi.org/10.1016/j.ijmecsci.2016.06.015
Publikováno v:
Tribology International. 151:106431
This paper focuses on an experimental investigation of the mechanical behavior of bolted joints. A new test apparatus to measure friction hysteresis was designed to provide a reliable experimental database for the calibration of contact models. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c734a6b4d0dea7b297ae7e02cbe69234
https://doi.org/10.1016/j.triboint.2020.106431
https://doi.org/10.1016/j.triboint.2020.106431