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Title:
Vpliv vrste in geometrije zvarnega spoja na koncentracijo napetosti : diplomsko delo
Authors:
ID
Skerbiš, Rok
(Author)
ID
Vesenjak, Matej
(Mentor)
More about this mentor...
ID
Vohar, Bojan
(Comentor)
ID
Mössler, Werner
(Comentor)
Files:
UN_Skerbis_Rok_2020.pdf
(3,60 MB)
MD5: C648F52913AF0090E0E1AD702EA1E6C7
PID:
20.500.12556/dkum/4374e144-4082-46ee-92ce-f04c84a572c3
Language:
Slovenian
Work type:
Bachelor thesis/paper
Typology:
2.11 - Undergraduate Thesis
Organization:
FS - Faculty of Mechanical Engineering
Abstract:
Zaradi predvidene dolge obratovalne dobe tirnih vozil je trdnost in ustrezno dimenzioniranje nosilnih delov le-teh izjemnega pomena. To velja še posebej za nosilni okvir podvozja tirnega vozila, ki je v splošnem konstrukcija zvarjena iz pločevin različnih debelin in oblik. Namen diplomskega dela je določitev faktorjev koncentracij napetosti na kritičnih mestih zvarnih spojev v odvisnosti od vrste geometrije in kombinacije zvarnih spojev. Za določitev omenjenih faktorjev so bile uporabljene računalniške simulacije po metodi končnih elementov. Na podlagi dobljenih faktorjev se lahko opredeli FAT razred vsakega izmed zvarov, pri čemer velja, da zvaru z najvišjim faktorjem pripada najnižji FAT razred. Končni rezultat dela predstavlja iz standardov dobljena Wöhlerjeva krivulja za posamezen zvar, ki se lahko primerja z Wöhlerjevo krivuljo dinamičnih preizkusov. Na ta način se lahko ugotovi ali so rezultati dobljeni z računalniškimi simulacijami primerljivi z rezultati preizkusov.
Keywords:
tirno vozilo
,
zvarni spoj
,
faktor koncentracije napetosti
,
trajna dinamična trdnost
,
računalniško podprto konstruiranje
,
metoda končnih elementov
Place of publishing:
Maribor
Place of performance:
Maribor
Publisher:
[R. Skerbiš]
Year of publishing:
2020
Number of pages:
IX, 53 f.
PID:
20.500.12556/DKUM-76894
UDC:
539.4:621.791.053(043.2)
COBISS.SI-ID:
42117891
NUK URN:
URN:SI:UM:DK:3DKZQZBU
Publication date in DKUM:
01.09.2020
Views:
1136
Downloads:
130
Metadata:
Categories:
KTFMB - FS
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:
SKERBIŠ, Rok, 2020,
Vpliv vrste in geometrije zvarnega spoja na koncentracijo napetosti : diplomsko delo
[online]. Bachelor’s thesis. Maribor : R. Skerbiš. [Accessed 31 March 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=76894
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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:
24.07.2020
Secondary language
Language:
English
Title:
The influence of the weld type and geometry on the notch stress
Abstract:
Due to the long operating time of rail vehicles, their adequate dimensioning is of great importance. This especially applies to the support frame of so-called bogie, which is in general a welded structure, made from steel plates of different thicknesses and shapes. Thus, the purpose of the following bachelor thesis is to determine the notch stress factors of weld joints, depending on type of geometry and combination of welds. To determine the mentioned factors, the finite element method was used. Based on the acquired factors, a FAT class for each weld can be determined (the higher the notch stress factor, the lower the FAT class of a weld). Based on the FAT class of a weld, its S – N curve can be extracted from standardized diagrams. The obtained standard S – N curve can then be compared to the one gained with experimental tests. Based on comparison of the curves, the validity of simulation results can be assessed.
Keywords:
rail vehicle
,
weld joint
,
notch stress factor
,
fatigue strength
,
computer aided design
,
finite element method
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