Analiza utrujanja TPMS struktur

magistrsko delo

Aleksej Rikić (Author), Branko Nečemer (Mentor)

Abstract

V magistrski nalogi je predstavljena numerična študija določevanja življenjske dobe izbranih TPMS struktur. V začetnem delu je predstavljeno teoretično ozadje določevanja življenjske dobe, osnove celičnih struktur in njihovo mehansko obnašanje. V drugem delu naloge so predstavljene numerične analize določevanja življenjske dobe v režimu malocikličnega utrujanja. Analize so bile izvedene v kontroli deformacije za različne nivoje amplitudnih deformacij (R=-1, kar predstavlja natezno-tlačno stanje). Numerične simulacije so bile izvedene za tri najpogosteje uporabljene TPMS strukture. Numerični rezultati so bili predstavljeni v treh različnih oblikah, pri čemer je bila izvedena primerjava rezultatov med analiziranimi strukturami. Primerjani so bili numerični rezultati življenjske dobe, njihove najvišje napetosti, njihove togosti, kritična mesta za iniciacije razpok in njihova deformacijska energija.

Keywords

numerična analiza;malociklično utrujanje;TPMS;minimalne površine;aluminijeva zlitina;AA 5083-H111;magistrske naloge;

Data

Language:	Slovenian
Year of publishing:	2024
Typology:	2.09 - Master's Thesis
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	[A. Rikić]
UDC:	[519.6:620.178.3]:544.022.535(043.2)
COBISS:	212509955
Views:	0
Downloads:	167
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Fatigue analysis of TPMS structures
Secondary abstract:	The master's thesis presents the process of analysing the lifetime of TPMS structures. The initial part presents the theoretical background of lifetime determination, the basics of cellular structures and their mechanical behaviour. In the second part of the thesis, numerical analyses of lifetime determination in the low-cycle fatigue regime are presented. The analyses were carried out in strain control for different levels of amplitude strains (R=-1, representing the tensile-compressive state). Numerical simulations were performed for the three most commonly used TPMS structures. Numerical results were presented in three different forms, and a comparison of the results between the analysed structures was performed. The numerical results of lifetimes, peak stresses, stiffnesses, critical crack initiation sites, and strain energy were compared.
Secondary keywords:	numerical analysis;low-cycle fatigue;TPMS;minimal surfaces;Aluminium alloy;AA 5083-H111;
Type (COBISS):	Master's thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za strojništvo, Konstrukterstvo
Pages:	1 spletni vir (1 datoteka PDF (XI, 57 f.))
ID:	24913121