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Title:Karakterizacija zareznega učinka pri numeričnih analizah utrujanja litoželeznih gradiv : magistrsko delo
Authors:ID Donik, Žiga (Author)
ID Kramberger, Janez (Mentor) More about this mentor... New window
Files:.pdf MAG_Donik_Ziga_2020.pdf (11,67 MB)
MD5: 125C7B5CE6D5CE63FD3F5D487890F425
PID: 20.500.12556/dkum/f07cdb8d-e7fe-49dc-b9bb-b42923d5de69
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Karakterizacija zareznega učinka je eden izmed glavnih izzivov pri numerični analizi utrujanja. Ugotovljeno je bilo, da koncept za vrednotenje zareznega učinka, ki temelji na napetostnem gradientu, za komponente iz sive litine ne daje napovedi v skladu z eksperimentalnimi rezultati. S pomočjo analize po metodi končnih elementov so bile opravljene numerične strukturne in utrujenostne simulacije eksperimentalnih testov. Metode za numerično vrednotenje zareznega učinka, ki so na voljo, so bile raziskane in ocenjene. Nobena izmed metod ni bila ustrezno natančna za predvidevanje dobe trajanja, zato je bila predlagana nova metoda, ki temelji na izračunu faktorja koncentracije napetosti na specifičnih problematičnih mestih v motorjih z notranjim zgorevanjem.
Keywords:utrujanje, numerične analize, zarezni učinek, napetostni gradient, faktor koncentracije napetosti
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[Ž. Donik]
Year of publishing:2020
Number of pages:XVIII, 71 f.
PID:20.500.12556/DKUM-77274 New window
UDC:620.178.3:519.6(043.2)
COBISS.SI-ID:40381955 New window
NUK URN:URN:SI:UM:DK:O42DJQTO
Publication date in DKUM:21.09.2020
Views:1211
Downloads:84
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:24.08.2020

Secondary language

Language:English
Title:Notch effect characterization in numerical fatigue analysis of cast iron
Abstract:Notch characterization is one of the main challenges in numerical fatigue analysis. The stress gradient concept for notch influence evaluation was found to be inaccurate in comparison to experimental findings for grey cast iron. The re-calculation of the experimental specimens was conducted using finite element analysis tools for structural and fatigue assessment. Currently available notch effect characterization methods were researched and tested. Since none of these methods produced acceptable results for the selected specimens, a new method based on the stress concentration factor was proposed for specific internal combustion engine features.
Keywords:fatigue, finite element analysis, notch effect, stress gradient, stress concentration factor


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