Odziv vertikalnog cilindra uslijed djelovanja hidrodinamičkog opterećenja

undergraduate thesis

• Title (english): Response of a vertical cylinder subjected to hydrodynamic loading
• Author: Tomislav Brajko
• Mentor: Nikola Vladimir (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Shipbuilding

Abstract

U ovom radu analiziran je odziv konstrukcije vertikalnog cilindra uslijed nastrujavanja fluida. Hidrodinamičko opterećenje izračunato je programskim paketom OpenFOAM, dok je strukturni odziv razmatranoga cilindra izračunat metodom konačnih elemenata pomoću programskog paketa NASTRAN. Hidrodinamičko opterećenje je na model konstrukcije preneseno pomoću programskog paketa BRIDGE_HS koji je razvijen na Fakultetu strojarstva i brodogradnje za potrebe simultanog razmatranja hidrodinamičkih opterećenja i strukturnih odziva općeg tipa konstrukcija. U radu je opisana korištena programska podrška, hidrodinamički i strukturni model, te proračunske postavke. Proračun odziva konstrukcije cilindra proveden je koristeći četverokutne konačne elemente ljuske, za različite debljine opločenja cilindra. Iako su proračuni provedeni na jednostavnim modelima, korišteni postupak primjenjiv je i na složenije objekte poput brodova i pomorskih konstrukcija.

Abstract (english)

In this thesis, the structural response of a vertical cylinder due to fluid flow is analyzed. The hydrodynamic load was calculated by means of the OpenFOAM software, while the structural response of the considered cylinder was calculated by the finite element method using the NASTRAN software. The hydrodynamic load was transferred to the structural model using the software BRIDGE_HS that has been developed at the Faculty of Mechanical Engineering and Naval Architecture for the purpose of simultaneous consideration of hydrodynamic loads and structural responses of the general type of structures. The work describes the used software, hydrodynamic and structural model, and calculation setup. The structural response assessment was performed using quadrangular finite shell elements, where different material and thickness properties of the cylinder were taken into account. Although the calculations were performed on simple models, the procedure is also applicable to more complex structures such as ships and offshore structures.

• Keywords: hidrodinamičko opterećenje; strukturni odziv; vertikalni cilindar; OpenFOAM; NASTRAN; BRIDGE_HS
• Keywords (english): hydrodynamic load; structural response; vertical cylinder; OpenFOAM; NASTRAN; BRIDGE_HS
• Language: croatian
• URN:NBN: urn:nbn:hr:235:790707
• Study programme: Title: Naval Architecture; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka brodogradnje (sveučilišni prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka brodogradnje)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-09-20 19:55:13