• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • Tagged with
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Frictional vibrations in structural polymers

McCann, Brian P. January 1992 (has links)
This study investigated the dry sliding of Acrylonitrile Butadiene Styrene (ABS) in a polymer-on-polymer configuration. The effect of several material and system parameters were investigated to determine their influence on the frictional behavior of the ABS materials. These parameters included: the time dependence of friction under static load, friction-normal load relationships, surface roughness, internal lubrication, friction-velocity relationships, and system stiffness. Four basic types of frictional behavior were observed - steady sliding, a single stick followed by steady sliding, non-sustained stick-slip oscillations that decayed after several oscillations, and stick-slip oscillations lasting several minutes. Several observations were made regarding the experimental results. It was observed that increasing surface roughness decreases the unstable behavior of the materials. Also, decreasing normal load decreased unstable behavior. A relationship between the friction-velocity curve, stick-slip, and the critical velocity at which stick slip disappeared was observed. Finally, an attempt was made to explain the observed behavior in light of existing theories. / M.S.

Page generated in 0.0982 seconds