FRICTION OF RUBBER ON WET SURFACES

THE IMPORTANCE OF LUBRICATED FRICTION OF RUBBER HAS BECOME INCREASINGLY OBVIOUS IN THE PAST DECADE AS DRIVING SPEEDS HAVE INCREASED. FRICTION OF RUBBER ON WET SURFACES IS DETERMINED ENTIRELY BY ENERGY LOSSES IN THE RUBBER THAT ARE PRODUCED BY ITS DEFORMATION BY THE HARD SURFACE OVER WHICH IT SLIDES. IT APPEARS POSSIBLE TO OBTAIN ABSOLUTE VALUES FOR FRICTION COEFFICIENTS OF RUBBER ON HARD SURFACES, BY MEANS OF APPROPRIATE LABORATORY MEASUREMENTS ON THE RUBBER AND THE SURFACE. ABRASIVE AND DEFORMATION CONTRIBUTIONS TO FRICTION ARE DISTINGUISHED BY THE MAGNITUDE AND CHARACTERISTIC FREQUENCY OF THE DISTORTION OF THE RUBBER. ON THE BASIS OF THE SIMPLE HYPOTHESIS THAT ABRASIVE AND DEFORMATION COMPONENTS EXIST IN THE ROAD SURFACE AND THAT PROPERTIES OF THE RUBBER RESPOND DIFFERENTLY TO THESE TWO TYPES OF COMPONENTS, IT HAS BEEN POSSIBLE TO DEVISE A SIMPLE ANALYTICAL TECHNIQUE FOR STUDYING THE PROPERTIES OF ROADS. SLIPPERINESS IS ACCOMPANIED, FOR THE MOST PART, BY A LACK OF ABRASIVE COMPONENT IN THE ROAD SURFACE. HYSTERESIS IS RESPONSIBLE FOR LUBRICATED FRICTION, BUT TESTS WITH A LARGE NUMBER OF RUBBER SPECIMENS OF DIFFERENT COMPOSITION SHOW THAT NOT ONLY HYSTERESIS BUT ALSO MODULUS OF ELASTICITY DETERMINES THE FRICTION COEFFICIENT OF A RUBBER SPECIMEN ON A HARD SURFACE. THE WAY IN WHICH MODULUS ENTERS INTO FRICTION IS NOT ENTIRELY CLEAR. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00368075
• Supplemental Notes:
  • Vol 160, No 3831, PP 959-964
• Authors:
  • Bevilacqua, E M
  • Percarpio, E P
• Publication Date: 1968-5-31

Media Info

• Serial:
  • Science
  • Publisher: American Association for the Advancement of Science
  • ISSN: 0036-8075
  • Serial URL: http://science.sciencemag.org/

Subject/Index Terms

• TRT Terms: Abrasions; Coefficient of friction; Deformation; Dissipation; Friction; Hysteresis; Lubrication; Measurement; Modulus of elasticity; Moisture content; Paving; Rubber; Slipperiness; Speed; Surface course (Pavements); Texture
• Uncontrolled Terms: Wet conditions
• Old TRIS Terms: Hard surfacing
• Subject Areas: Energy; Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00216404
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM