Numerička analiza loma strukturnog akrilnog ljepila

master's thesis

• Title (english): Numerical analysis of fracture behavior in structural acrylic adhesive
• Author: Abdelhadi Abdalla
• Mentor: Zvonimir Tomičević (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-07-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Ovaj rad bavi se istraživanjem adhezivnih svojstava strukturno-termalnog akrilnog ljepila u svrhu
razvoja numeričkog modela za simuliranje istog. Kako bi uspješno razvili model za modeliranje
odziva konstrukcije prilikom DCB (eng. Double Cantilever Beam) testa, potrebno je
eksperimentalno odrediti parametar energije loma (eng. Fracture Energy). Za određivanje
energije loma u ovom radu koristit će se dvije metode: SBT (eng. Simple Beam Theory) temeljena
na Euler-Bernoullijevoj teoriji savijanja grede i CBBM (eng. Compliance Based Beam Method)
bazirana na teoriji Timoshenkove grede.
U uvodnom dijelu rada prikazat će se detaljan pregled baterijskih sustava, kemijska osnova ljepila
i njihova primjena u različitim industrijama. Nadalje, poseban naglasak bit će stavljen na teorije
mehanike loma i metode izračuna vrijednosti energije loma.
Nadalje, dat će se uvid u postupak pripreme uzoraka, provedbe eksperimentalnog ispitivanja te
obrade podataka.
Na poslijetku, prikazat će se koraci razvoja numeričkog modela sa svim bitnim postavkama u
softveru Abaqus. Dobiveni rezultati numeričkog modela usporedit će se s eksperimentalno
dobivenim podatcima te će se ocijeniti primjenjivost teorijskih metoda SBT i CBBM na izračun
energije loma.

Abstract (english)

This paper explores the adhesive properties of structural-thermal acrylic adhesive to develop a
numerical model. To successfully create a model for reproducing the structural response during
the Double Cantilever Beam (DCB) test, it is essential to experimentally determine the fracture
energy parameter.
In this study, two methods will be employed to determine the fracture energy: the Simple Beam
Theory (SBT), based on Euler-Bernoulli beam theory, and the Compliance Based Beam Method
(CBBM), grounded in Timoshenko beam theory.
The introductory section will provide a comprehensive review of battery systems, the chemical
background of adhesives, and their applications in various industries. Additionally, an overview
of fracture mechanics will be presented, along with the methods used to calculate fracture energy
values.
Subsequently, the paper will outline the procedures for sample preparation, test execution, and
data processing.
Finally, the steps for creating a numerical model will be demonstrated, including key settings in
the Abaqus software package. The results obtained from the numerical model will be compared
with the experimentally derived data, and the applicability of the theoretical methods, SBT and
CBBM, for calculating fracture energy will be evaluated.

• Keywords: energija loma; ljepilo/adheziv; numerički model
• Keywords (english): fracture energy; adhesive; numerical model
• Language: croatian
• URN:NBN: urn:nbn:hr:235:435313
• 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: Embargoed access; Embargo expiration date: 2029-07-15
• Created on: 2024-07-19 12:06:58