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Nakrčevanje železniških koles na osi tovornih vagonov : diplomska naloga visokošolskega strokovnega študijskega programa I. stopnje strojništvoZorc, Klemen, 1992-V železniškem prometu se pojavlja potreba po izdelavi sklopov osi s kolesi. Pri izdelavi teh sklopov je eden ključnih korakov hladno nakrčevanje koles na osi. Edini merili, ki ju ob nakrčevanju ... predpisuje standard za vzdrževanje tovornih vagonov, sta velikost in potek sile nakrčevanja. Proizvajalec ne pozna velikosti obremenitev niti napetosti, ki se ob tem pojavijo v materialu kolesne dvojice. Prav tako ni znano, ali se material preoblikuje v elastičnem ali plastičnem področju. Diplomsko delo zajema opis tlačnega preizkusa, s katerim so bili pridobljeni podatki o uporabljenih materialih pri preoblikovanju v plastičnem področju. Podatke bi uporabili v simulaciji, v primeru, da se preoblikovana dvojica nakrči v plastičnem področju. Sledi opis preizkusa sestave kolesnih dvojic tipa 002 in tipa 004 ter analiza nakrčevanja osi na kolo z numeričnimi simulacijami in ovrednotenje vplivnih parametrov nakrčevanja. V nadaljevanju sledi primerjava rezultatov preizkusa sestave kolesne dvojice z rezultati, dobljenimi z numeričnimi simulacijami, ter kalibracija numeričnega modela z izbranim parametrom koeficienta trenja. Ugotovili smo, da se večje notranje napetosti pri nakrčevanju pojavijo v kolesu. Simulacija je pokazala tudi, da se preoblikovana dvojica nakrči v elastičnem področju. Prav tako smo ugotovili, da koeficient trenja vpliva le na velikost maksimalne nakrčevalne sile, ne pa tudi na potek sile nakrčevanja.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [K. Zorc], 2016Language - slovenianCOBISS.SI-ID - 14436123
Author
Zorc, Klemen, 1992-
Other authors
Pepelnjak, Tomaž
Topics
diplomske naloge |
preoblikovanje |
nakrčevanje |
krčni nased |
obnova kolesne dvojice |
tlačni preizkus |
simulacija |
transformation |
shrinking |
shrink fit joints |
restoration of wheelset |
pressure test |
simulation
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Library | Call number – location, accession no. ... | Copy status |
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Faculty of Mechanical Engineering, Lj. | VS 261 IN: 60000261 |
available - reading room |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Zorc, Klemen, 1992- | ![]() |
Pepelnjak, Tomaž | 12957 |
Source: Personal bibliographies
and: SICRIS
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