Thesis /

ROMDOC-THESIS-2016-718

Contribuţii la elasto-poro-hidrodinamica lubrificaţiei

Russu, Christian
2011-04-29

Abstract: University Politehnica of Bucharest, Mechanical Engineering & Mecatronics Faculty, Machine Elements and Tribology Dept. CONTRIBUTIONS TO ELASTO-PORO-HYDRODYNAMIC LUBRICATION ABSTRACT PhD STUDENT: eng. Russu Christian SCIENTIFIC COORDINATOR: prof.dr.eng. Mircea D. Pascovici The present paper treats the case of lubrication in the presence of porous, permeable and deformable media. This assumes the presence of a permeable, highly compressible layer, between the two pairs in relative movement to each other. In the PhD Thesis, there are presented theoretical models, based on analytical and numerical approaches for elasto-poro-hydrodynamic and ex-poro-hydrodynamic cases of lubrication. Theoretical research is covering two directions: lifting process for different sliders in tangential motion over a deformable permeable layer and squeeze process in the presence of porous media with shock energy absorption through this process. Also, experiments on shock energy absorption were carried out. Also, there was proposed and modeled theoretically a flow regulator based on compression generated by pressure drop of a porous permeable deformable layer. Complementary there are presented theoretical and experimental studies over squeeze process of viscoplastic/ pseudoplastic fluids.

Keyword(s): Lubrificaţie -- Teză de doctorat ; Tribologie -- Teză de doctorat
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