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http://dx.doi.org/10.7843/kgs.2018.34.6.49

Assessment of Slip Sinkage of an Off-Road Tracked Vehicle from Model Track Experiments  

Baek, Sung-Ha (Dept. of Civil & Environmental Engrg., Gachon Univ.)
Shin, Gyu-Beom (Dept. of Civil & Environmental Engrg., Seoul National Univ.)
Chung, Choong-Ki (Dept. of Civil & Environmental Engrg., Seoul National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.6, 2018 , pp. 49-59 More about this Journal
Abstract
When a tracked vehicle travels off-road, shearing action and ground sinkage occur on the soil-track interface and severely affect tractive performance of the tracked vehicle. Especially, the ground sinkage, which is induced by vehicle's weight (hereinafter referred to as static sinkage) and longitudinal forces in the direction of travel producing slip (hereinafter referred to as slip sinkage), develops soil resistance, directly restricting the tractive performance of an off-road tracked vehicle. Thus, to assess the tractive performance of an off-road tracked vehicle, it is imperative to take both of static sinkage and slip sinkage into consideration. In this research, a series of model track experiments was conducted to investigate the slip sinkage which has not been clarified. Experiment results showed that the slip sinkage increased with increasing the slip ratio, but the increasing rate gradually decreased. Also, the slip sinkage was found to increase as relative density of soil decreased and imposed vertical load increased. From the experiment results, the normalized slip sinkage defined as slip sinkage to static sinkage calculated in the identical condition was investigated, and an empirical equation for the slip sinkage was developed in terms of slip ratio, which allows vehicle operators to predict the slip sinkage in a given soil and operating conditions.
Keywords
Slip sinkage; Slip ratio; Soil resistance; Off-road tracked vehicle; Model track experiment;
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Times Cited By KSCI : 1  (Citation Analysis)
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