Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva

Valušek, Jan

prikaz prve stranice dokumenta Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva

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master's thesis

Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva

Rijeka: University of Rijeka, Faculty of Engineering, 2020. urn:nbn:hr:190:349908

Valušek, Jan

University of Rijeka
Faculty of Engineering
Department of Engineering Mechanics
Section of Machine Dynamics

Cite this document

APA 6th Edition

Valušek, J. (2020). Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva (Master's thesis). Rijeka: University of Rijeka, Faculty of Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:190:349908

MLA 8th Edition

Valušek, Jan. "Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva." Master's thesis, University of Rijeka, Faculty of Engineering, 2020. https://urn.nsk.hr/urn:nbn:hr:190:349908

Chicago 17th Edition

Harvard

Valušek, J. (2020). 'Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva', Master's thesis, University of Rijeka, Faculty of Engineering, accessed 19 April 2024, https://urn.nsk.hr/urn:nbn:hr:190:349908

Vancouver

Valušek J. Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva [Master's thesis]. Rijeka: University of Rijeka, Faculty of Engineering; 2020 [cited 2024 April 19] Available at: https://urn.nsk.hr/urn:nbn:hr:190:349908

IEEE

J. Valušek, "Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva", Master's thesis, University of Rijeka, Faculty of Engineering, Rijeka, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:190:349908

Cite this item: https://urn.nsk.hr/urn:nbn:hr:190:349908

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Metadata

Title	Analiza vibracija i stabilnosti rotora parne turbine oslonjenog pomoću kliznih ležajeva
Title (english)	Vibration and stability analysis of steam turbine rotor supported in journal bearings
Author	Jan Valušek
Mentor	Sanjin Braut (mentor)
Committee member	Neven Lovrin (predsjednik povjerenstva)
Committee member	Sanjin Braut (član povjerenstva)
Committee member	Zlatan Car (član povjerenstva)
Granter	University of Rijeka Faculty of Engineering (Department of Engineering Mechanics) (Section of Machine Dynamics) Rijeka
Defense date and country	2020-09-23, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Mechanical Engineering
Abstract	U ovom radu analiziraju se forme vibriranja i vlastite frekvencije rotora turbine P-7029/17 Tvornice turbina Karlovac. Teoretski dio rada opisuje rotacijske strojeve, njihove dijelove, vrste i postojeće modele. Posebna pozornost pridodana je hidrauličkim ležajevima, koji se opisuju i analiziraju u zasebnom poglavlju. Promatra se uljni film i njegove karakteristike u kliznim ležajevima, kao i sile koje se javljaju radi tlaka u filmu. Analiza samih vibracija i formi vibriranja provodi se za dva slučaja, kada je rotor oslonjen o krute ležajeve i kada je rotor oslonjen o limunske ležajeve. Prvi slučaj se modelira u programu Ansys te se rezultati uspoređuju s rezultatima iz programa Code_Aster. Za drugi slučaj, mjerene vrijednosti koeficijenata ležaja se interpoliraju u Python-u prije same implementacije u Ansys. Tokom modeliranja u programima opisivani su poduzeti koraci. Dobivene forme vibriranja zajedno sa pobudnim frekvencijama prikazane su grafički, dok su ukupni rezultati svih frekvencija i formi prikazani u Campbellovim dijagramima i logaritamskom dekrementu.
Abstract (english)	In this paper, vibration modes, and natural frequencies were analysed for the rotor of P-7029/17 turbine, from Turbine factory Karlovac. The theoretical part of the paper describes rotary machines, their parts, types and existing models. Special attention is drawn to hydraulic bearings which were described and analysed in a separate chapter. The oil film and its characteristics in sliding bearings are observed, as well as the forces that occur due to the pressure in the film. The analysis of the vibrations themselves and the forms of vibration was carried out for two cases, when the rotor is being supported by rigid bearings and when the rotos is supported by sliding bearings. The first case was modelled in Ansys and the results were compared with the results acquired from Code_Aster. In the second case, the measured bearing coefficients values were interpolated using Python before being imported in Ansys. During the modelling, taken steps were described. The obtained forms of vibration along with the excitation frequencies are shown in pictures, while the overview of the results was given with Campbells diagrams and logarithmic decrement.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:190:349908
Study programme	Title: Mechanical Engineering Study programme type: university Study level: graduate Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resource	Text
File origin	Born digital
Access conditions	Access restricted to students and staff of home institution
Terms of use
Repository	Repository of the University of Rijeka, Faculty of Engineering
Created on	2021-08-27 10:25:12

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