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master's thesis
Proračun čvrstoće "leptir" prigušnih ventila
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. urn:nbn:hr:235:840180
Kraljić, Nikola
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Kraljić, N. (2017). Proračun čvrstoće "leptir" prigušnih ventila (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:840180

Kraljić, Nikola. "Proračun čvrstoće "leptir" prigušnih ventila." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:840180

Kraljić, Nikola. "Proračun čvrstoće "leptir" prigušnih ventila." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2017. https://urn.nsk.hr/urn:nbn:hr:235:840180

Kraljić, N. (2017). 'Proračun čvrstoće "leptir" prigušnih ventila', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 10 September 2024, https://urn.nsk.hr/urn:nbn:hr:235:840180

Kraljić N. Proračun čvrstoće "leptir" prigušnih ventila [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2017 [cited 2024 September 10] Available at: https://urn.nsk.hr/urn:nbn:hr:235:840180

N. Kraljić, "Proračun čvrstoće "leptir" prigušnih ventila", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:235:840180

Metadata
TitleProračun čvrstoće "leptir" prigušnih ventila
Title (english)Strength analysis of butterfly damper valves
AuthorNikola Kraljić
MentorIvica Skozrit (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2017-05-19, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
General Mechanical Engineering (Construction)
Abstract
U ovom radu provedena je numerička analiza čvrstoće dva tipa prigušnih ventila za kontrolu protoka ispušnih plinova. Analiza je provedena na osnovnim dijelovima ventila: tijelima ventila, vratilima te diskovima zapornih tijela ventila. Za izradu dijelova ventila koriste se dvije grupe materijala, pa je sukladno tome i proveden proračun. Numerički proračun proveden je metodom konačnih elemenata u programskom paketu Abaqus. Prije analize čvrstoće samih dijelova ventila, provedena je verifikacija i odabir konačnih elemenata te se ispituje konvergencija rezultata dobivenih za jednostavnije slučajeve geometrije i opterećenja. Verifikacija je provedena na geometrijama debelostijene cijevi, tankostijene cijevi, kružne ploče te grede i štapa kružnog poprečnog presjeka. Nakon provedene verifikacije, odabiru se konačni elementi kojima je proveden proračun pojedinih dijelova ventila. Analiza tijela ventila provedena je za opterećenje tlakom na unutarnjoj površini, dok je analiza zapornih tijela provedena za dva slučaja. Prvi slučaj je zatvoreni ventil kada na cijeloj površini diska zapornog tijela djeluje tlak. Drugi slučaj je otvaranje i zatvaranje ventila kada tlak djeluje na polovici zapornog tijela te su vratila opterećena na uvijanje. Nakon provedenih analiza, daju se prijedlozi za poboljšanje dijelova ukoliko je potrebno. Na kraju rada provedeno je određivanje minimalne debljine tijela prema dostupnom standardu te provjerava jesu li dobivena numerička rješenja sukladna standardu.
Abstract (english)
In this thesis, numerical strength analysis of two types of butterfly damper valves for controlling exhaust gas is conducted. Analysis is conducted for basic valve parts: valve bodies, shafts and discs for closing the valve. There are two groups of materials that are used for manufacturing valve parts according to which analysis is conducted. Numerical analysis is performed using the software package Abaqus for the finite element method. Firstly, verification analysis of simple problems is performed to check results convergence. Verification analysis is performed for thick walled pipe, thin walled pipe, thin circular plate and beam with circular cross section. After performed verification analysis, finite elements for analysis of each valve part are chosen. Secondly, analysis of valve bodies is performed for valves loaded by internal pressure, while analysis of discs with shafts is performed for two cases. The first case is closed valve when pressure load acts on whole surface of the discs. The second case is opening and closing of valve when pressure load acts on half of surface of the discs and shafts are under torsion. After performed analysis recommendation for improving the construction is given if needed. Finally, minimal thickness of valve bodies is determined according to available standard and coMPared if numerical results are in accordance to the standard.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:840180
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-05-22 19:30:55