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Title:Numerično simuliranje površinske utrujenostne razpoke na zobeh zobnikov
Authors:ID Fajdiga, Gorazd (Author)
ID Flašker, Jože (Author)
ID Glodež, Srečko (Author)
ID Ren, Zoran (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-UWNQF7AY
 
Language:Slovenian
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:V tem prispevku je predstavljen dvodimenzijski računski model za simuliranje širjenja površinsko začetne utrujenostne razpoke v stičnem področju dveh zobnih bokov zobnikov. Diskretiziran model zoba zobnika je obremenjen s pravokotno obremenitvijo (Hertzov stični tlak), strižno obremenitvijo (trenje med zobnimi boki zobnikov) in dodatno stično silo, ki je posledica elastohidrodinamičnih (EHD) pogojev mazanja. Za določitev širjenja utrujenostne razpoke od začetne do kritične dolžine, ko se delček materiala odlomi od površine in povzroči nastanek jamice, je uporabljen postopek J-integrala v okviru metode končnih elementov. Primerjava računskih in eksperimentalnih rezultatov kaže, daje predstavljeni model primeren za spremljanje širjenja površinske utrujenostne razpoke pri stični obremenitvi in ga kot takega lahko uporabimo pri napovedovanju pojava jamičenja na stično obremenjenih elementih, kakor so zobniki, ležaji, kolesa itn.
Keywords:strojni elementi, zobniška gonila, lomna mehanika, utrujanje, jamičenje, mazanje, kontaktni problemi, dotikalne površine
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:2000
Number of pages:str. 359-369
Numbering:Letn. 46, št. 6
PID:20.500.12556/DKUM-53208 New window
UDC:621.933:539.52:621.89
ISSN on article:0039-2480
COBISS.SI-ID:5693206 New window
NUK URN:URN:SI:UM:DK:I0LWAWWO
Publication date in DKUM:10.07.2015
Views:1554
Downloads:73
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:Numerical simulation of the surface fatigue crack growth on gear teeth flanks
Abstract:The paper describes a two-dimensional computational model for simulation of the surface-initiated fatique-crack growth in the contact area of gear-teeth flanks. The discretised model of gear teeth is subjected to normal loading (Herzian contact pressure), tangential loading (friction between gear-teeth flanks) and additional external contact forces that arise the EHD-lubrication conditions. The J-integral method in the framework of the finite-element analysis is used for the simulation of the fatique-crack propagation from the initial to the critical crack length, when the material's surface layer breaks away and a pit appears on the surface. The comparison of computational and experimental results shows that the proposed model reliably simulates the surface-fatique crack growth under contact loading and can be used for computational predictins of surface pitting for various contacting mechanical elements like gears, bearings, wheels, etc.
Keywords:machine elements, toothed gears, fracture mechanics, fatigue, pitting, lubrication, contact problems, contacting surfaces


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