Projektiranje konstrukcije obalne prekrcajne rampe za Ro-Ro brodove

master's thesis

• Title (english): Structural design of Ro-Ro linkspan
• Author: Fran Prusec
• Mentor: Jerolim Andrić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-12-04, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Shipbuilding; Constructive of Floating and Maritime Structures

Abstract

Tema ovog rada je projektiranje konstrukcije obalne prekrcajne rampe.
Projektiranje je provedeno u dvije faze. U prvoj fazi dimenzionirani su pojedini konstrukcijski elementi po preskriptivnim pravilima klasifikacijskog društva Lloyd's Register specifičnim za ovakav tip rampe, prema zadanoj inicijalnoj geometriji iz predloška.
U drugoj fazi projektiranja provedena je analiza metodom konačnih elemenata za sve slučajeve opterećenja po British Standard pravilima za direktne proračune. U programu Autodesk Inventor napravljen je 3D CAD model obalne prekrcajne rampe koji je korišten kao geometrija za izradu modela metodom konačnih elemenata (MKE). Potom je MKE analiza provedena u programu Ansys te su dimenzionirani svi nezadovoljavajući elementi konstrukcije i/ili je odabrana prikladnija topologija konstrukcijskih elemenata. Provedena je i MKE analiza izvijanja po DNV pravilima te je odabrano prikladno rješenje za problem izvijanja.
Naposljetku, iz 3D CAD modela napravljeni su osnovni klasifikacijski nacrti za dimenzioniranu konstrukciju.

Abstract (english)

The theme of this paper is structural design of a linkspan.
The design was carried out in two phases. In the first phase, certain construction elements were defined according to the prescriptive rules of the classification society Lloyd’s Register specific to this type of ramp according to the given initial geometry from the template.
In the second design phase, a finite element analysis was performed for all load cases according to British Standard rules for direct calculations. In the Autodesk Inventor software, a 3D CAD model of the linkspan was created and used as geometry to create a model by the finite element method (FEM). The FEM analysis was then performed in the Ansys software and all unsatisfactory structural elements were redefined and/or a more appropriate topology of structural elements was selected. A FEM analysis of buckling according to DNV rules was performed and a suitable solution for the buckling problem was selected.
Finally, the basic classification drawings for the defined structure were made from the 3D CAD model.

• Keywords: obalna prekrcajna rampa; British Standard; MKE; Lloyd's Register
• Keywords (english): linkspan; British Standard; FEM; Lloyd's Register
• Language: croatian
• URN:NBN: urn:nbn:hr:235:945485
• Study programme: Title: Naval Architecture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka brodogradnje (magistar/magistra inženjer/inženjerka brodogradnje)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-11-27 11:34:29