Predicting Wheeled Vehicle Motion Resistance in Shallow Snow

A vehicle traveling through snow is required to expend a greater amount of energy than is necessary when traveling on a rigid surface. Visually, this energy difference can be explained by the formation of a rut. Various attempts have been made in the past to equate the energy of compaction to vehicl...

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Bibliographic Details
Main Author: Blaisdell, George L.
Other Authors: OFFICE OF THE CHIEF OF ENGINEERS (ARMY)WASHINGTON DC
Format: Text
Language:English
Published: 1981
Subjects:
Snow
Ice and Permafrost
Numerical Mathematics
Surface Transportation and Equipment
*MOTION
*SNOW
*MATHEMATICAL PREDICTION
*VEHICLES
TEST AND EVALUATION
RESISTANCE
VERTICAL ORIENTATION
WHEELS
PRESSURE
VECTOR ANALYSIS
HORIZONTAL ORIENTATION
COMPACTING
SHALLOW DEPTH
TRACKS
PE62730A
WU10
AST42
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA110134
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA110134
Description
Summary:A vehicle traveling through snow is required to expend a greater amount of energy than is necessary when traveling on a rigid surface. Visually, this energy difference can be explained by the formation of a rut. Various attempts have been made in the past to equate the energy of compaction to vehicle motion resistance. However, many of the previous models use information gathered through the application of a vertical force (with a plate-sinkage device) to predict the horizontal motion resisting force. In an attempt to more accurately quantify the relationship between snow compaction and vehicle motion resistance, a vectorial analysis of compaction by a wheel is performed. A method for separating the compaction due to vehicle weight and forward thrust (horizontal propulsion) is suggested. Two methods of using this compaction force breakdown with field-generated data are proposed for the calculation of vehicle motion resistance in shallow snow.

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