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Title: Stresses under Moving Vehicles. Report 5, Distribution of Stresses beneath a Towed Pneumatic Tire in Air-Dry Sand
Authors: Green, A. J. (Andrew J.)
Murphy, N. R. (Newell R.)
Mobility and Environmental Systems Laboratory (U.S.)
Keywords: Tires
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical Report (U.S. Army Engineer Waterways Experiment Station); no. 3-545 rept.5
Abstract: Measurements of the magnitude and distribution of normal stresses at the tire soil interface of an 11.00-20, 12-PR smooth pneumatic tire towed on air-dry mortar sand are presented. Deflection gages inside the tire measured its deflection, and pressure cells embedded in the surface of the tire measured the stresses at the tire-soil interface. Also, pressure cells installed at several depths within the soil mass beneath the center of the tire path measured stresses induced in the soil mass. Results indicate that the distribution of stresses at the tire-soil interface is related to the shape of the deflected tire and thereby to tire load, inflation pressure, and soil strength. Peak stress in the soil mass occurred well ahead of the axle of the test wheel, with the total load on the wheel having the greatest influence on its magnitude. The average stress waves for a tire-soil system such as used in this study can be expressed mathematically in terms of a Fourier series. Application of the Fourier series in stress wave analysis is discussed in Appendix A.
Description: Technical Report
Gov't Doc #: Technical Report No. 3-545 Report 5
Rights: Approved for public release; distribution is unlimited
Size: 93 pgs / 4.980Mb
Types of Materials: PDF/A
Appears in Collections:Technical Report

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