The effect of wear on ThermoElastic Instabilities (TEI) in bimaterial interfaces

Publikationstyp
Journal Article
Date Issued
2020-02
Sprache
English
Author(s)
Papangelo, Antonio 
Ciavarella, Michele  
Institut
Strukturdynamik M-14  
TORE-URI
http://hdl.handle.net/11420/3700
Journal
Tribology international  
Volume
142
Article Number
105977
Citation
Tribology International (142): 105977 (2020-02)
Publisher DOI
10.1016/j.triboint.2019.105977
Scopus ID
2-s2.0-85072729130
There is ample evidence of ThermoElastic Instabilities (TEI) occurring in sliding contacts. The very first experiments of JR Barber in 1969 suggested wear interacts in the process of localization of contact into “hot spots”. However, studies on the interaction of TEI with wear are scarce. We consider the case of two sliding halfspaces and make a perturbation analysis permitting the formation of waves migrating over the two bodies, in presence of wear. We find that for exactly identical bodies wear does not affect the stability boundary. In the other limit case of bad conductor against a good conductor, wear tends to suppress TEI completely. Intermediate cases show a complex range of possible effects: for certain thermomechanical properties wear may even reduce the critical speed.
Subjects
Friction
Sliding contact
ThermoElastic Instabilities
Wear