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professional thesis
Strukturna analiza kućišta kolotura podiznog stupa na jaružaru
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2013. urn:nbn:hr:235:148199
Rožić, Filip
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

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

Cite this document

Rožić, F. (2013). Strukturna analiza kućišta kolotura podiznog stupa na jaružaru (Professional thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:148199

Rožić, Filip. "Strukturna analiza kućišta kolotura podiznog stupa na jaružaru." Professional thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2013. https://urn.nsk.hr/urn:nbn:hr:235:148199

Rožić, Filip. "Strukturna analiza kućišta kolotura podiznog stupa na jaružaru." Professional thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2013. https://urn.nsk.hr/urn:nbn:hr:235:148199

Rožić, F. (2013). 'Strukturna analiza kućišta kolotura podiznog stupa na jaružaru', Professional thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:148199

Rožić F. Strukturna analiza kućišta kolotura podiznog stupa na jaružaru [Professional thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2013 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:235:148199

F. Rožić, "Strukturna analiza kućišta kolotura podiznog stupa na jaružaru", Professional thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:235:148199

Metadata
TitleStrukturna analiza kućišta kolotura podiznog stupa na jaružaru
AuthorFilip Rožić
MentorSmiljko Rudan (mentor)
Committee memberKalman Žiha (predsjednik povjerenstva)
Committee memberSmiljko Rudan (član povjerenstva)
Committee memberAlbert Zamarin (član povjerenstva)
Committee memberIvica Skozrit (član povjerenstva)
Committee memberJoško Parunov (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2013-10-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Shipbuilding
Abstract
Tema ovoga rada je strukturna analiza kućišta kolotura na 60 metara dugom samohodnom jaružaru. Analiza naprezanja i deformacija provedena je metodom konačnih elemenata pri čemu su korišteni pločasti elementi linearne i parabolične formulacije u analizi modela broda i kućišta te volumni elementi u analizi podmodela na mjestu najvećeg naprezanja. Generiran je globalni model jaružara i lokalni model kućišta kolotura, odakle su tehnikom podmodeliranja preuzeti pomaci i zatim narinuti u vidu opterećenja na kritičan strukturni detalj. Softverski paket korišten pri izradi ovog rada je FEMAP/NX Nastran. Uz statičku analizu provedena je optimizacija konstrukcije s ciljem uštede materijala uz uvjet stabilnosti konstrukcije, odnosno zadovoljavanje dopuštenih vrijednosti naprezanja, pomaka i faktora izvijanja. Nadalje, optimizacijom je zadovoljen uvjet funkcionalnosti, odnosno određena je najmanja debljina čeličnog lima do koje se može vršiti zavarivanje punom penetracijom. Optimiranoj konstrukciji određen je životni vijek i broj ciklusa do loma korištenjem S-N krivulja (Wöhlerove krivulje) pri čemu je funkcija opterećenja određena na temelju vrijednosti žarišnih naprezanja pri režimima rada opisanim u sljedećim poglavljima. Provedena je i nelinearna analiza konstrukcije s kojom se razmotrilo ponašanje konstrukcije u elastično-plastičnom području. Ta analiza provedena je korištenjem softverskog paketa LS Dyna koji se također bazira na metodi konačnih elemenata. U radu je detaljno definiran proces gibanja jaružara i kako taj proces utječe na naprezanja u kućištu kolotura.
Abstract (english)
Subject of this thesis is structural analysis of sheave housing on 60 m long selfpropelled dredger. Stress and strain analysis has been carried out with finite element method, by using shell elements of linear and parabolic formulation to calculate ship model and sheave housing, and by using volume elements for submodel analysis at sections with biggest strain. Global and local model have been made where submodel techinque was used to applie displacement from global model to local. Software used for calculation is Femap with NX Nastran solver. Design optimization has been carried out with a final goal of minimizing construction weight thus satisfying construction stability regarding allowable stress, allowable translation and buckling factor. Furthermore, optimization satisfied functionality condition; allowable plate thickness for full penetration welding has been determined. Construction life expectancy and number of cycles to failure has been determined according to S-N curves (Wöhler curves) where load function has been determined due to hot spot analysis under working regime described in the following chapters. Nonlinear analysis has been carried out with a final goal of determining construction behavior in elastic-plastic area. That analysis was made in LS Dyna, software that uses and calculates finite elements. Overall system function including process of rigging and effect it has on stress changes in sheave housing has been described in detail in this thesis.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:148199
Study programmeTitle: Mechanical Engineering and Naval Architecture - specialist
Study programme type: university
Study level: postgraduate specialist
Academic / professional title: sveučilišni/a specijalist/specijalistica strojarstva i brodogradnje (sveučilišni/a specijalist/specijalistica strojarstva i brodogradnje)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2021-05-27 12:41:52