Povećanje elastične smične nosivosti zglobno oslonjenih izotropnih ploča

undergraduate thesis

• Title (english): Magnification of the elastic shear buckling capacity for simply supported isotropic plates
• Author: Antonio Mikulić
• Mentor: Jerolim Andrić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2014-03-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Shipbuilding

Abstract

Izraženo smično opterećenje značajnog intenziteta može izazvati pojavu smičnog izvijanja, a u konačnici izazvati i smični kolaps smično opterećenih elemenata konstrukcije trupa broda, ukoliko narinuto opterećenje nadiđe njihovu smičnu graničnu nosivost. Stoga, razmatranje smične nosivosti ukrepljenih panela može predstavljati relevantan aspekt i važan kriterij strukturne podobnosti u okviru analize i sinteze kostrukcije broda. S obzirom da se postojeće formulacije smične granične nosivosti zasnivaju na korekciji kritičnog smičnog naprezanja pri elastičnom smičnom izvijanju, u okviru ovoga rada se razmatraju različiti mogući načini odgađanja pojave elastičnog smičnog izvijanja te se identificira najefikasniji prisup s tim u vezi. Rezultati numeričkih simulacija uspoređeni su sa postojećim teorijskim formulacijama te su predložene formulacije izračuna kritičnog smičnog naprezanja uzdužno ukrepljenih ploča.

Abstract (english)

Pronounced shear loading of a significant intensity can induce occurrence of the shear buckling and eventually lead to the shear collapse of the hull girder structural elements loaded in shear, if acting shear load surpasses their ultimate shear load capacity. Therefore, consideration of the stiffened panel shear load capacity can represent relevant aspect and important structural adequacy criterion within the framework of the analysis and synthesis of the ship structures. Since the contemporary ultimate shear load capacity formulations are based on correction of the calculated elastic shear buckling critical stress, this paper investigates various possible approaches to the inhibition of the elastic shear buckling and identifies the most efficient one. Results of numerical simulations are compared with the existing theoretical formulations and formulations regarding critical shear stress of the longitudinaly stiffened panels are proposed.

• Keywords: elastično smično izvijanje ploče; kritično smično naprezanje; povećanje elastične smične nosivosti
• Keywords (english): plate elastic shear buckling; critical shear stress; elastic shear capacity magnification
• Language: croatian
• URN:NBN: urn:nbn:hr:235:454533
• 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: 2019-05-27 13:55:29