Analiza stabilnosti aksijalno opterećenih štapova

undergraduate thesis

• Title (english): Stability Analysis of Axially Loaded Bars
• Author: Ivan Mihaljčuk
• Mentor: Marko Bartolac (mentor)
• Committee member: Marko Bartolac (predsjednik povjerenstva)
• Committee member: Ivan Duvnjak (član povjerenstva)
• Committee member: Ana Skender (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Engineering Mechanics); Zagreb
• Defense date and country: 2021-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Gubitak stabilnosti aksijalno opterećenog vitkog štapa iznenadna je pojava do koje dolazi uslijed prekoračenja kritične tlačne sile - Eulerove sile. U radu je detaljno opisana ova pojava i prikazani su izvodi za proračunske kritične sile u slučaju štapova s različitim uvjetima pričvršćenja na krajevima koji se izvijaju u elastičnom području. Nadalje, analizirani su izrazi koje su definirali Engesser, Tetmayer i Jasinski, a odnose se na izvijanje štapova u plastičnom području. Uz prikaz teorijske pozadine ovog problema, izrađen je i laboratorijski model koji predstavlja pojavu izvijanja na četiri primjera štapova s različitim rubnim uvjetima. Naposlijetku, dan je i jedan riješeni numerički problem.

Abstract (english)

Stability loss of a axially loaded slender bar is a phenomenon that appears suddenly and it is caused by excessive compressive force - the Euler's force. The thesis elaborates this appearance in detail and shows the derived critical forces in case of bars with different boundary conditions that buckle in the elastic zone. Furthermore, the equations derived by Engesser, Tetmayer and Jasinski for buckling of bars in the plastic zone were analyzed. Besides the theoretical backgorund of the studied problem, the thesis comprises the construction of a laboratory model that represents the buckling phenomenon on four examples of bars with different boundary conditions. Finally, at the end of the thesis a solved numerical problem is given.

• Keywords: izvijanje; stup; Eulerova sila
• Keywords (english): buckling; columns; Euler's force
• Language: croatian
• URN:NBN: urn:nbn:hr:237:134261
• Study programme: Title: Civil Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-04-05 07:16:16