Utjecaj vertikalnih ojačanja na čvrstoću kružnog kanalskog poklopca

undergraduate thesis

• Title (english): Influence of vertical reinforcements on strength of circular manhole cover
• Author: Filip Radišić
• Mentor: Martina Lovrenić - Jugović (mentor)
• Committee member: Ladislav Lazić (predsjednik povjerenstva)
• Committee member: Martina Lovrenić - Jugović (član povjerenstva)
• Committee member: Zoran Glavaš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Metallurgy; Sisak
• Defense date and country: 2017-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract

U radu je provedeno nekoliko numeričkih linearnih statičkih simulacija savijanja lijevanog kružnog kanalskog poklopca (šahte) promjera 600 mm u svrhu dimenzioniranja položaja i broja vertikalnih ojačanja. Analize pomaka i naprezanja provedene su metodom konačnih elemenata u programskom paketu Autodesk Simulation Mechanical. Verifikacija numeričkih rezultata provedena je na primjeru tanke kružne ploče, za koju su izračunata analitička rješenja savijanja.
Nakon verifikacije numeričkog postupka tankoj kružnoj ploči dodana su s donje strane dva cirkularna vertikalna ojačanja: unutarnje i vanjsko. Numeričkim simulacijama istražen je utjecaj položaja unutarnjeg cirkularnog ojačanja na čvrstoću kružnog kanalskog poklopca, gdje su ekvivalentna naprezanja praćena energijskom teorijom čvrstoće (HMH - von Mises). Pošto variranjem položaja unutarnjeg cirkularnog ojačanja najveća ekvivalentna naprezanja ostaju na samoj ploči provode se simulacije s dodanim radijalnim ojačanjima. Variranjem broja radijalnih ojačanja izabire se optimalna izvedba ploče.

Abstract (english)

In this paper several numerical linear static simulations of bending circular manhole cover with 600 mm diameter are performed in order to dimension the position and the number of vertical reinforcement. The analysis of displacement and stress using the finite element method in the software package Autodesk Simulation Mechanical were conducted. Verification of numerical results on the solution of thin circular plate was performed for which analytical bending solutions were calculated.
After checking the numerical procedure on the thin circular plate, two circular vertical reinforcements were added on the underside: internal and external. Numerical simulations investigated the influence of the inner circular reinforcement position on the strength of the circular canal lid, where equivalent stresses are followed by energy theory of strength (HMH - von Mises) were monitored. Since by varying the position of the inner circular reinforcement the greatest equivalent stresses remain on the board, simulations with added radial reinforcements are performed. By optimizing the number of radial reinforcements, the optimum plate design is chosen.

• Keywords: kružni kanalski poklopac; vertikalna ojačanja; linearna analiza; metoda konačnih elemenata; nodularni lijev
• Keywords (english): circular manhole cover; vertical reinforcements; linear analysis; finite element method; ductile iron
• Language: croatian
• URN:NBN: urn:nbn:hr:115:298875
• Study programme: Title: Metallurgy; specializations in: Metallurgical Engineering, Industrial Ecology; Course: Metallurgical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka metalurgije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka metalurgije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-10-20 06:51:44