Cornell University
Library
Cornell UniversityLibrary

eCommons

Help
Log In(current)
  1. Home
  2. Cornell University Graduate School
  3. Cornell Theses and Dissertations
  4. Analysis of lubricated normal contact of a rigid sphere on a viscoelastic halfspace

Analysis of lubricated normal contact of a rigid sphere on a viscoelastic halfspace

File(s)
Sahasranaman_cornell_0058O_11961.pdf (1.48 MB)
Permanent Link(s)
https://doi.org/10.7298/n4fk-r333
https://hdl.handle.net/1813/114417
Collections
Cornell Theses and Dissertations
Author
Sahasranaman, Ashwin
Abstract

Visco-elasto-hydrodynamic lubrication (VEHL) is a problem that is presentin various industries. Research in this domain exists primarily for elastohydrodynamic lubrication (EHL) problems and not much work is available that focusses on VEHL problems. In the present work this has been addressed. The VEHL problem studied here is that of a relaxation test which involves a rigid sphere indenting a lubricated incompressible viscoelastic half space. This phenomenon is governed by the Reynold’s equation and the Green’s function of the material. The Green’s function for such a problem is not readily available for incompressible viscoelastic materials. Such a function is first derived using the relationship between the behavior of incompressible elastic and viscoelastic materials. Following this a numerical approach has been used to handle the non-linearity in the Reynold’s equation. The results of the model developed in this work are then validated using simulation and experimental data. Finally, the model is used to study the behavior of Polymethyl Methacrylate which exhbits viscoelastic behavior.

Description
54 pages
Date Issued
2023-08
Keywords
Visco-Elasto-Hydrodynamic Lubrication
Committee Chair
Hui, Chung-Yuen
Committee Member
Bouklas, Nikolaos
Degree Discipline
Mechanical Engineering
Degree Name
M.S., Mechanical Engineering
Degree Level
Master of Science
Type
dissertation or thesis
Link(s) to Catalog Record
https://newcatalog.library.cornell.edu/catalog/16219278

Site Statistics | Help

About eCommons | Policies | Terms of use | Contact Us

copyright © 2002-2026 Cornell University Library | Privacy | Web Accessibility Assistance