CAN DYNAMIC TIRE FORCES BE USED AS A CRITERION OF PAVEMENT CONDITIONS?
A MOVING VEHICLE EXERTS A FLUCTUATING COMPONENT OF FORCE ON THE HIGHWAY DUE TO VERTICAL MOTION INDUCED IN THE VEHICLE BY UNEVENNESS OF THE PAVEMENT. THIS FORCE, SUPERIMPOSED ON THE STATIC WHEEL LOAD, IS FREQUENTLY CALLED THE DYNAMIC WHEEL FORCE OR THE DYNAMIC TIRE FORCE. THIS PAPER INCLUDES A BRIEF DESCRIPTION OF INSTRUMENTATION USED TO DETERMINE THE DYNAMIC TIRE FORCE BY MEASURING THE FLUCTUATION OF THE AIR PRESSURE IN A TIRE OF A MOVING VEHICLE. ACTUAL FORCE RECORDS THAT WERE TAKEN ON SEVERAL SECTIONS OF PAVEMENT ARE INCLUDED. FROM THESE RECORDS THE CORRESPONDING ROOT MEAN SQUARED VALUE OF THE DYNAMIC FORCE IS DETERMINED, AND THE POSSIBLE USE OF THIS QUANTITY AS A CRITERION OF PAVEMENT CONDITION IS SUGGESTED. IN ADDITION, FOR CERTAIN PAVEMENT SECTIONS THE FREQUENCY OF OCCURRENCE OF VARIOUS MAGNITUDES OF THE DYNAMIC TIRE FORCE IS DETERMINED. THE INFLUENCE OF SPEED ON DYNAMIC FORCE IS INVESTIGATED BY OPERATING THE TEST VEHICLE OVER THE SAME LENGTH OF PAVEMENT AT DIFFERENT VELOCITIES. IN LIKE MANNER THE INFLUENCE OF TIRE INFLATION PRESSURE ON DYNAMIC FORCE IS STUDIED BY CONDUCTING TESTS IN WHICH ONLY THE INFLATION PRESSURE WAS VARIED. THE SIGNIFICANCE OF THESE PARAMETERS RELATIVE TO A PAVEMENT CRITERION BASED ON DYNAMIC TIRE FORCE IS DISCUSSED. /AUTHOR/
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Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Quinn, B E
- Wilson, C C
- Publication Date: 1964
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 88-100
- Monograph Title: Pavement design and evaluation 1963
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Serial:
- Highway Research Record
- Issue Number: 46
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Dynamics; Evaluation; Force; Inflation; Measurement; Motion; Motor vehicles; Pavement performance; Pavements; Performance; Pressure; Speed; Tires; Velocity; Wheel loads
- Uncontrolled Terms: Moving vehicles
- Old TRIS Terms: Highway pavement
- Subject Areas: Highways; Pavements; Vehicles and Equipment;
Filing Info
- Accession Number: 00206217
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Sep 29 1994 12:00AM