Zobrazeno 1 - 10
of 61
pro vyhledávání: '"CHRISTIAN MARIA FIRRONE"'
Publikováno v:
Applied Sciences, Vol 11, Iss 12, p 5613 (2021)
The paper aims at performing a comprehensive experimental study on the peculiar properties of a bolted joint, and investigates the damping induced at different interfaces (between flanges, bolt head/nut and flange, threads) during vibrations. A novel
Externí odkaz:
https://doaj.org/article/66f24543a81743ada0ffe4d63c86abc5
Publikováno v:
Applied Sciences, Vol 11, Iss 2, p 877 (2021)
In low pressure turbine stages, adjacent blades are coupled to each other at their tip by covers, called shrouds. Three-dimensional periodic contact forces at shrouds strongly affect the blade vibration level as energy is dissipated by friction. To v
Externí odkaz:
https://doaj.org/article/c8f1dc438e02479686cdcf2f691bc809
Publikováno v:
Applied Sciences, Vol 10, Iss 17, p 5930 (2020)
The present paper is focused on the post processing of the data coming from the Blade Tip-Timing (BTT) sensors in the case where two very close peaks are present in the frequency response of the vibrating system. This type of dynamic response with tw
Externí odkaz:
https://doaj.org/article/8b95e1a409e246dd864dc75c265e7d25
Publikováno v:
Applied Sciences, Vol 9, Iss 6, p 1225 (2019)
Thin-walled gears, designed for aeronautical applications, have shown very rich dynamics that must be investigated in advance of the design phase. One of the signatures of their dynamics is coupling due to the meshing teeth which stand-alone gear mod
Externí odkaz:
https://doaj.org/article/5b84f4b4adf743a3a674cbd827160573
A novel tuned vibration absorber with frictional interfaces (FTVA) is proposed in this study, combining advantages of the tuned absorber and the nonlinear dry friction damping to dissipate the energy. First, the influence of the mechanism of the nonl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f377d571e66b65b2742b0c09f099119
https://doi.org/10.21203/rs.3.rs-2137697/v1
https://doi.org/10.21203/rs.3.rs-2137697/v1
Publikováno v:
Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration.
Bolted joints are widely used for the assembly of mechanical components to provide continuity of the structure and transfer internal actions (i.e. forces and moments) from one member to another. Contact and dry friction at the jointed interface have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5e41a4d66ed8177e49abf13e6d28542
https://doi.org/10.1115/gt2022-82840
https://doi.org/10.1115/gt2022-82840
Publikováno v:
Mechanical Systems and Signal Processing. 189:110080
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fbac31020c5661128e92c28698ea27f
https://doi.org/10.1016/j.ymssp.2022.110080
https://doi.org/10.1016/j.ymssp.2022.110080
Low Pressure Turbine (LPT) blades encounter highly stressed forced vibrations driven by centrifugal force and steady/unsteady aerodynamic loads. To prevent the blades from failure due to high cycle fatigue (HCF), the amplitude of these vibrations mus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90cf6c6e23341244c57b678cf3be19c1
https://hdl.handle.net/11583/2972825
https://hdl.handle.net/11583/2972825
The effect of differences in nominally equal sectors of a bladed disk (mistuning) is a well-known problem for designers since the forced response may show localized amplification of the blade response with respect to a cyclically symmetric (tuned) co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48de04407d744f189c1130bf6ff8f18b
https://hdl.handle.net/11583/2972585
https://hdl.handle.net/11583/2972585
Nonlinear forced response analyses of mechanical systems in the presence of contact interfaces are usually performed in built-in numerical codes on reduced order models (ROM). Most of the cases these derive from complex finite element (FE) models, re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::035a5730c6ed9fde8580529d6df15513
https://doi.org/10.21203/rs.3.rs-867343/v1
https://doi.org/10.21203/rs.3.rs-867343/v1