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Title: Performance of Soils under Tire Loads. Report 5, Development and Evaluation of Mobility Numbers for Coarse-Grained Soils
Authors: Green, A. J. (Andrew J.)
Mobility and Environmental Systems Laboratory (U.S.)
Keywords: Trafficability
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station);no. 3-666 rept.5
Abstract: This study examined the effects of tire deflec:tion, tire geometry, wheel load, and soil strength on the performance of coarse-grained soils subjected to moving tire loads. Mathematical expressions were developed that combine the independent tire-soil and system parameters and relate them to the performance coefficients. A combination of independent parameters, was from single-wheel laboratory tests. This expression, ref erred to as the sand mobility number, is shown to account for the combined effects of soil strength ( G)' tire section width and diameter (b and d, respectively), wheel load ( w)' and tire deflection ( o/h) on wheel performance as measured by the performance coefficients. A multiple-pass analysis was conducted to illustrate that performance on the second and third passes relation was not fashion that theusing a relation also could be related to the sand mobility number, although the same as that for the first pass. It was shown in a similar performance of vehicles on coarse-c;rained soils could be predicted based on the sand mobility number.
Description: Technical Report
Gov't Doc #: Technical Report No. 3-666 Report 5
Rights: Approved for public release; distribution is unlimited
Size: 107 pgs / 10.09Mb
Types of Materials: PDF/A
Appears in Collections:Technical Report

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