Eksperimentalno određivanje naprezanja i pomaka na rešetkastom nosaču

undergraduate thesis

• Title (english): Experimental determination of stress and displacement in a truss structure
• Author: Luka Baršić
• Mentor: Marina Frančić Smrkić (mentor)
• Committee member: Marina Frančić Smrkić (predsjednik povjerenstva)
• Committee member: Marta Šavor Novak (član povjerenstva)
• Committee member: Krešimir Fresl (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Engineering Mechanics); Zagreb
• Defense date and country: 2024-09-03, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

U ovom završnom radu eksperimentalno su određena naprezanja i pomaci na rešetkastom
nosaču od pleksiglasa. Objašnjeni su pojmovi naprezanja, deformacija, složenog opterećenja
štapnih elemenata te eksperimentalna analiza. Provedeno je statičko ispitivanje modela
nosača od pleksiglasa u dvije faze opterećenja. Tijekom ispitivanja mjereni su pomaci LVDT
osjetilima te relativne deformacije elektrootpornim tenzometrima na više mjernih mjesta.
Izrađen je numerički model nosača u RFEM softweru za proračun i modeliranje konstrukcija,
čiji rad se bazira na metodi konačnih elemenata. Proveden je proračun i numerička analiza te
su rezultati uspoređeni s eksperimentalno određenim vrijednostima. Izvedeni su zaključci o
razlikama i sličnostima uspoređenih rezultata.

Abstract (english)

In this final paper, the stresses and displacements on the Plexiglas truss were determined
experimentally. The concepts of stress, deformation, complex loading of rod elements and
experimental analysis are explained. A static test of plexiglass truss model was carried out in
two loading phases. During the test, displacements were measured with LVDT sensors and
relative deformations with electro-resistive strain gauges at several measuring points. A
numerical model of a truss was created in the RFEM softwer for calculation and modeling of
structures, whose work is based on finite element method. Calculations and numerical analysis
were carried out and the results were compared with experimentally determined values.
Conclusions were drawn on the differences and similarities of the compared results.

• Keywords: naprezanje; pomak; relativna deformacija; eksperimentalna analiza; složeno opterećenje; proračunski model
• Keywords (english): stress; displacement; relative deformations; experimental analysis; complex load; numerical model
• Language: croatian
• URN:NBN: urn:nbn:hr:237:086561
• 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: Open access
• Created on: 2024-09-10 09:30:12