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Title:Določanje faktorja intenzitete napetosti na razpoki, ki obdaja praznine v materialu : magistrsko delo
Authors:ID Prosen, Marcel (Author)
ID Gubeljak, Nenad (Mentor) More about this mentor... New window
ID Predan, Jožef (Comentor)
Files:.pdf MAG_Prosen_Marcel_2024.pdf (10,35 MB)
MD5: 437F47C8ECB67FF0CD095E1A0E718B5D
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V magistrski nalogi smo obravnavali problematiko votline, ki je posledica nekovinskega vključka ali pore in razpoke v elementu. Obravnavali smo več različnih primerov, ki so imeli različne geometrijske kombinacije velikosti in lokacije votline, okrog katere je nastala razpoka. S pomočjo numeričnih simulacij smo ugotavljali, kakšna je razlika v enako veliki razpoki, ki je nastala iz votline, od ravninske do v materialu zajete razpoke. Razliko smo ugotavljali na osnovi numeričnih simulacij modela iz končnih elementov, na osnovi izračuna faktorja intenzitete napetosti vzdolž konture razpoke. Ugotovili smo, da pri kratkih razpokah, ki so nastale iz votline v materialu, so vrednosti faktorja intenzitete napetosti manjše, kot to velja za enako veliko ravninsko razpoko v notranjosti materiala. Rezultati so pomembni zaradi določanja relevantne vrednosti faktorja intenzitete napetosti po konturi razpoke, ki je nastala iz vključka, za določitev trajne dinamične trdnosti materiala.
Keywords:faktor intenzitete napetosti, razpoke, nekovinski vključki, pore, numerične simulacije, analitični preračuni
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[M. Prosen]
Year of publishing:2024
Number of pages:1 spletni vir (1 datoteka PDF (XII, 66 f.))
PID:20.500.12556/DKUM-90222-d3bd1c90-0527-ca34-4853-07a33856deb0 New window
UDC:621.7.019.1(043.2)
COBISS.SI-ID:212360195 New window
Publication date in DKUM:04.09.2024
Views:190
Downloads:74
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:26.08.2024

Secondary language

Language:English
Title:Determining the Stress Intensity Factor of the Crack Surrounding Voids in the Material
Abstract:In the master's thesis, we addressed the issue of voids, which result from non-metallic inclusions or pores and cracks in the element. We considered several different cases with various geometric combinations of the size and location of the void, around which a crack had formed. Using numerical simulations, we investigated the differences in cracks of the same size that originated from voids, ranging from surface cracks to those embedded within the material. The differences were determined based on numerical simulations of a finite element model, using the calculation of the stress intensity factor along the crack contour. We found that for short cracks that originated from voids in the material, the values of the stress intensity factor are lower compared to equally large surface cracks inside the material. These results are important for determining the relevant value of the stress intensity factor along the crack contour, which originated from an inclusion, for assessing the material's long-term dynamic strength.
Keywords:stress intensity factor, crack, non-metallic inclusion, voids, numerical simulation, analytical calculations


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