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Effect of surface microgeometry on pressure distribution and film thickness profile in circular contact under impact loading
Author(s) -
Andrei Gabriel,
Birsan Iulian,
Andrei Laurentia,
Walton Douglas
Publication year - 2006
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.14
Subject(s) - materials science , lubrication , indentation , acceleration , ball (mathematics) , surface roughness , surface finish , composite material , impact , impression , pendulum , contact area , pressure angle , contact force , structural engineering , mechanical engineering , engineering , physics , mathematics , classical mechanics , quantum mechanics , advertising , business , mathematical analysis
The transient contact between a steel ball and a metal plate is studied experimentally. The main aim of this research is to reveal the impact prints and the indentation profiles of the contacting surfaces for different conditions of thermal treatment, roughness and lubrication. The impact test rig and the measuring devices that have been used to carry out the study are presented. A ballistic pendulum with a steel ball as contacting part frontally impacts the steel sample. Using auxiliary devices, the force, acceleration and total impact duration are simultaneously recorded. When the impact velocity is increased, the force, acceleration and impression diameter increase in all cases. The recorded values of force, acceleration and contact pressure are higher in the lubricated condition than for dry impact for the annealed steel samples used, while the impression diameter is smaller. Copyright © 2006 John Wiley & Sons, Ltd.