Self-lubricating polymer composites : using numerical trbology to hightlight their design criterion

Maria Villavicencio (1, 2, 3, 4) , Mathieu Renouf (2, 5, 6) , Aurélien Saulot (1, 6) , Y Michel , Yves Mahéo (4) , Guillaume Colas (7) , Tobin Filleter (7) , Yves Berthier (8, 6)

1 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
2 LMGC - Laboratoire de Mécanique et Génie Civil
3 CNES - Centre National d’Études Spatiales [Paris]
4 SKF - Aerospace [Saint-Vallier]
5 PMMD - Physique et Mécanique des Milieux Divisés
6 InTriG - International Tribology Group
7 Department of Mechanical and Industrial Engineering
8 Department of Mechanical and Industrial Engineering

After the cessation of RT/Duroid 5813, manufacturing tests were performed by CNES and ESA/ESTL in order to find an alternative material. Although PGM-HT was selected as the best candidate, limitations about its tribological capabilities to replace RT/Duroid 5813 were later pointed out. Today, the predictability of the tribological behaviour of those materials is not fully overcome. The motivation to this work is to complement studies of self-lubricating materials by coupling experimental analyses with numerical modelling, in order to predict their tribological behaviour. A Discrete Element Method is chosen to construct the numerical material, because it allows to represent wear and the third body generation at the scale of the ball/retainer contact. An underlying role of the adhesion between components in controlling the tribological properties of the transfer film has been observed.

Domaines: Matériaux

Maria Villavicencio, Mathieu Renouf, Aurélien Saulot, Y Michel, Yves Mahéo, et al.. Self-lubricating polymer composites : using numerical trbology to hightlight their design criterion . ESMATS 2017, Sep 2017, Hatefiled, United Kingdom. ⟨hal-01768786⟩