Eksperimentalno i numeričko modeliranje procesa deformiranja epruvete za savijanje u tri točke

Frančeski, Joško (2016) Eksperimentalno i numeričko modeliranje procesa deformiranja epruvete za savijanje u tri točke. = Experimental and numerical modelling of deformation process of specimen under three-point bending test. Master's thesis (Bologna) , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Tonković, Zdenko.

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Abstract (Croatian)

Na primjeru epruvete za savijanje u tri točke potrebno je provesti istraživanje procesa deformiranja eksperimentom i numeričkom simulacijom. U svrhu zaobilaženja skupih, kontaktnih i razornih metoda eksperimentalne mehanike korištena je beskontaktna optička metoda praćenja pomaka i deformacija po čitavoj površini epruvete sustava Aramis. Pomoću rezultata eksperimenata izračunavaju se materijalni parametri za konstitutivne modele numeričkih simulacija koje su provedene u programskom paketu Abaqus. Izvršena je validacija numeričke metode direktnom usporedbom numeričkih rezultata na cijelom području diskretizacije s eksperimentalnim rezultatima. Kako bi se mogla provesti validacija, razvijen je programski kod i algoritam koji omogućuje direktnu usporedbu rješenja. Osim toga, provedeno je istraživanje inverznog modeliranja pomoću programskog paketa True Load, koji je dio programskog paketa FeSafe i radi u okruženju Abaqus-ovog postporcesora kao plugin.

Abstract

On the basis of three point bending specimen a research of process of deformation was conducted by experiment and numerical simulation. To bypass expensive, contact and destructive methods of experimental mechanics non contact optical method of measuring displacements and deformations on the entire specimen surface that was enabled by using Aramis system. Results of the experiments were used to calculate material parameters for the constitutive models of numerical simulations used in Abaqus software. Validation of numerical method was conducted by direct comparison of numerical results on the entire area of discretization with experimental results. In order to validate numerical method, it was necessary to develop a program script and algorithm that enables direct comparison of results. Following that, a research of inverse modelling techniques used by True Load software was conducted. True Load is part of the FeSafe software and is used in postprocessor part of Abaqus software as a plugin.

Item Type:	Thesis (Master's thesis (Bologna))
Uncontrolled Keywords:	korelacija digitalne slike; numerička analiza; inverzno modeliranje
Keywords (Croatian):	digital image correlation; numerical analysis; inverse modelling
Subjects:	TECHNICAL SCIENCE > Mechanical Engineering
Divisions:	200 Department of Engineering Mechanics > 210 Chair of Mechanics and Strength of Materials
Date Deposited:	26 Jan 2016 11:17
Last Modified:	02 Apr 2020 13:59
URI:	http://repozitorij.fsb.hr/id/eprint/4987

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