Numerička analiza konstrukcije vertikalne prometne signalizacije

master's thesis

• Title (english): Numerical analysis of the structure of vertical traffic signalization
• Author: Ante Jozić
• Mentor: Ivica Skozrit (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2019-01-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U ovom radu je analiziran utjecaj vjetra, koje je ujedno i glavno opterećenje, na vertikalnu prometnu signalizaciju. Kako na različitim područjima vjetar postiže različite brzine, provedena je analiza obzirom na područja na kojima bi vertikalna prometna signalizacija mogla biti postavljena. Za analizu je odabran portalni prometni znak s tri obavijesne ploče, a prema propisima za prometnu signalizaciju u Hrvatskoj konstruiran je sklop prometnog znaka i za njega je u programskom paketu Solidworks izrađen 3D model. Analitičkim proračunom izračunati su progibi i maksimalna naprezanja za nosače portalnog prometnog znaka. Nakon provedenog analitičkog proračuna pristupilo se numeričkoj analizi koja je provedena u programskom paketu Abaqus. Objašnjene su i verificirane metode i procedure primijenjene u numeričkoj analizi. Za potrebe numeričke analize korišteni su tetraedarski konačni elementi jer su se prilikom verifikacije i analize konvergencije pokazali prikladnima za ovaj tip problema. Nakon što je provedena, prikazani su rezultati numeričke analize, a uspoređeni su s rezultatima dobivenim analitičkim proračunom. Prikazana je konvergencija i odstupanje od rezultata dobivenih analitičkim proračunom. Obzirom na rezultate dobivene numeričkom analizom i analitičkim proračunom predložene su konstrukcije obzirom na područja na kojima će se portalni znak vertikalne prometne signalizacije koristiti.

Abstract (english)

This work analyzes the influence of wind, which is also the main load on vertical traffic signaling. Since in different areas the wind reaches different speeds, an analysis has been carried out of the areas in which vertical traffic signalization should be set up. For the analysis, the traffic sign with three notice boards was selected and according to the traffic signaling regulations in Croatia, a traffic sign assembly was constructed and a SolidWorks 3D model was developed for it. An analytical calculation calculates bumps and maximum strains for portal traffic carries. After the analytical calculation was carried out, a numerical analysis was carried out in the Abaqus program package. The methods and procedures applied in the numerical analysis are explained and verified. For the purposes of numerical analysis, the tetrahedral finite elements were used because they were found to be suitable for this type of problem when verifying and analyzing convergence. After being performed, the results of the numerical analysis are presented and compared to the results obtained with the analytical calculation. Convergence and deviation from the results obtained are shown. Given the results obtained by numerical analysis and analytical calculation, structures are proposed with respect to the areas in which the vertical sign will be used.

• Keywords: vertikalna prometna signalizacija; vjetar; numerička analiza; metoda konačnih elemenata; naprezanja; progib
• Keywords (english): vertical traffic signalization; wind; numerical analysis; finite element method; strain; displacement
• Language: croatian
• URN:NBN: urn:nbn:hr:235:800994
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 23:51:01