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http://dx.doi.org/10.7315/CADCAM.2015.230

Soil Stress Analysis Using Discrete Element Method for Plate-Sinkage Tests  

Jang, Gichan (Dept. of Mechanical Engineering, Myongji Univ.)
Lee, Soojin (Dept. of Mechanical Engineering, Myongji Univ.)
Lee, Kyu-Jin (Dept. of Mechanical Engineering, Myongji Univ.)
Publication Information
Korean Journal of Computational Design and Engineering / v.20, no.3, 2015 , pp. 230-237 More about this Journal
Abstract
Soil deformation on the off-load ground is significantly affected by soil conditions, such as soil type, water content, and etc. Thus, the soil characteristics should be estimated for predicting vehicle movements on the off-load conditions. The plate-sinkage test, a widely-used experimental test for predicting the wheel-soil interaction, provides the soil characteristic parameters from the relationship between soil stress and plate sinkage. In this study, soil stress under the plate-sinkage situation is calculated by the DEM (Discrete Element Method) model. We developed a virtual soil bin with DEM to obtain the vertical reaction forces under the plate pressing the soil surface. Also parametric studies to investigate effects of DEM model parameters, such as, particle density, Young's modulus, dynamic friction, rolling friction, and adhesion, on the characteristic soil parameters were performed.
Keywords
Characteristic soil parameters; Discrete element method; Plate-sinkage test; Soil deformation;
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