Effects of loading patterns on the pressure-sinkage relation of dry loose sand |
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| Authors: | J.I. Xuewu Zhuang Jide Qui Xiding |
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| Affiliation: | aDepartment of Automobile Engineering, Tsinghua University, Beijing 100084, P. R. of China;bDepartment of Automobile Engineering, Jilin University of Technology, Changchun 130025, P. R. of China |
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| Abstract: | The pressure-sinkage relation of dry loose sand is one of the main problems considered for a vehicle to drive in desert. It is affected by loading patterns. Based on plate-sinkage tests. the effects of two different loading patterns on the pressure-sinkage relation of dry loose sand are studied. One is that the plate is horizontal with the angle of load relative to the plate normal varying from 0 to 30 degrees. The other is that the load is perpendicular to the plate with the angle of the plate relative to sand surface varying from 0 to 30 degrees. The results indicate that the pressure -sinkage relations of dry loose sand in both the above mentioned cases are different from that in the horizontal plate-vertical load case and that if the sinkage-pressure relation under the horizontal plate-inclined load case is used to determine the normal stress distribution under the tire, a precise prediction of the tractive properties of a wheel can be obtained. |
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