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Title:

SIMULATION OF THE ROAD-CORRUGATION PHENOMENON

Accession Number:

00233415

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309021693

Abstract:

A MATHEMATICAL MODEL WAS FORMULATED TO SIMULATE THE PHENOMENON OF WASHBOARDING ON UNPAVED ROADS. BOTH THE VEHICLE AND THE ROAD COMPONENTS WERE TREATED AS SPRING-MASS-DAMPER ASSEMBLIES. A DIGITAL COMPUTER PROGRAM WAS WRITTEN TO SOLVE THE EQUATIONS OF MOTION OF THE SYSTEM; DISPLACEMENT FORCING FUNCTIONS REPRESENTED IRREGULARITIES IN THE PATH OF A MOVING WHEEL. THE PROGRAM WAS EXECUTED WITH VARYING ROAD AND VEHICLE CHARACTERISTICS, AND THUS THE RELATIONS AMONG THOSE PRIMARY CHARACTERISTICS AND WASHBOARD PRESENCE AND DIMENSIONS WERE ESTABLISHED AND THEN VERIFIED BY PHYSICAL MODEL TESTS IN THE LABORATORY. IN BOTH THE SIMULATION AND THE PHYSICAL TESTS, THE PRIMARY AND SECONDARY VARIABLES WERE EXPRESSED AS DIMENSIONLESS RATIOS. RESULTS SHOWED THAT VEHICLE WEIGHT, TIRE PRESSURE, AND VEHICLE SPEED AFFECTED PRIMARILY THE WAVELENGTH OF THE CORRUGATIONS BUT THAT THERE WERE MAXIMUM OR MINIMUM VALUES OF THOSE PARAMETERS ABOVE OR BELOW WHICH CORRUGATIONS WOULD NOT OCCUR. RESULTS ALSO SHOWED THAT, FOR THE PARTICULAR SURFACE MATERIALS USED, WASHBOARDING OCCURRED MORE READILY IN A MATERIAL WITH A RELATIVELY HIGH SPECIFIC DAMPING CAPACITY AND THAT THIS PROPERTY WAS RELATED TO PARTICLE SHAPE, EFFECTIVE SIZE, AND UNIFORMITY COEFFICIENT.

Supplemental Notes:

Sponsored by Committee on Compaction. 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

Monograph Accession #:

01418572

Authors:

Riley, J G
Furry, R B

Pagination:

pp 54-62

Publication Date:

1973

Serial:

Highway Research Record

Issue Number: 438
Publisher: Highway Research Board

Conference:

52nd Annual Meeting of the Highway Research Board

Location: Washington District of Columbia, United States
Date: 1973-1-22 to 1973-1-26

ISBN:

0309021693

Media Type:

Print

Features:

Figures (7) ; References (14) ; Tables (2)

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways; Pavements

Files:

TRIS, TRB

Created Date:

Dec 22 1973 12:00AM

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