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Title:Critical plane modelling of fatigue initiation under rolling and sliding contact
Authors:ID Šraml, Matjaž (Author)
ID Flašker, Jože (Author)
ID Potrč, Iztok (Author)
Files:URL http://dx.doi.org/10.1243/030932404773123949
 
Language:English
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Contact fatigue is a phenomenon of important practical significance for engineering applications involving localized contacts, such as gears, rail wheel system and rolling bearings. The service lifetime of such components is related to damage, which results from the contact fatigue. The process in the material structure that causes this kind of failure is quite complicated. The aim of the present paper is to describe a contact fatigue initiation criterion, based on the critical plane approach for the general contact problem. On the basis of contact stress analysis with modified Hertzian boundary conditions, the loading cycle of characteristic material points in the contact area is determined. The Dang Van damage initiation criterion is based on the critical plane approach, which combines the largest allowable shearing and hydrostatic stresses (tensile and compressive), with an assumed elastic shakedown behaviour and it is used in this work. The material point of initial fatigue damage is then determined at the transition of the loading cycle stresses over the critical plane. The model assumed a homogeneous and elastic material model, without any imperfections or residual stresses, and elastic shakedown is considered. A proper determination of loading cycles and their characteristic values is of significance for contact fatigue initiation analysis. Finally, determination of the most critical material point on or under the contact surface and related number of loading cycles required for fatigue damage initiation is calculated with the strain-life (epsilon-N) method.
Keywords:machine elements, contact fatigue, crack initiation, strain life method, critical plane approach, numerical modeling
Year of publishing:2004
PID:20.500.12556/DKUM-27508 New window
UDC:621.833:539.388.1
ISSN on article:0309-3247
COBISS.SI-ID:8655126 New window
NUK URN:URN:SI:UM:DK:QEULAOBT
Publication date in DKUM:01.06.2012
Views:2046
Downloads:116
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
ŠRAML, Matjaž, FLAŠKER, Jože and POTRČ, Iztok, 2004, Critical plane modelling of fatigue initiation under rolling and sliding contact. Journal of strain analysis for engineering design [online]. 2004. [Accessed 22 January 2025]. Retrieved from: http://dx.doi.org/10.1243/030932404773123949
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Record is a part of a journal

Title:Journal of strain analysis for engineering design
Shortened title:J.strain anal. eng. des.
Publisher:Mechanical Engineering Publications
ISSN:0309-3247
COBISS.SI-ID:25793792 New window

Secondary language

Language:English
Keywords:strojni elementi, kontaktna utrujenost, nastanek razpoke, deformacijska metoda, kriterij kritične ravnine, numerično modeliranje


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