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Modeling of wear in silicon nitride in rolling-sliding contact

: Khader, I.; Kürten, D.; Kailer, A.; Gola, M.

Raparelli, T. ; Italian Tribology Association -AIT-:
WTC 2013, 5th World Tribology Congress. Extended abstracts : Held in Torino (Italy) on September 8-13, 2013
Torino, 2013
ISBN: 978-88-908185-0-9 (CD-ROM)
ISBN: 978-1-63439-352-2 (Ausgabe Curran)
World Tribology Congress (WTC) <5, 2013, Torino>
European Commission EC
FP7-NMP; 263476; ROLICER
Enhanced reliability and lifetime of ceramic components through multiscale modelling of degradation and damage
Fraunhofer IWM ()
wear simulaiton; silicon nitride; rolling contact; tribochemical wear; sliding wear

Despite the intertwining wear mechanisms involved in rolling-sliding contact under water it was possible to simulate wear using a simple model relying on a linear dependency between the wear volume and the sliding distance. Local geometrical changes directly affect contact pressure and tensile stresses. Due to progressive wear tensile stresses decrease and modify their distribution to follow the changes occurring to the contact zone. Crack propagation on the surface accordingly follows the tensile stress trajectory path.