کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
796708 | 902843 | 2013 | 8 صفحه PDF | دانلود رایگان |

Traditional terramechanics theorems utilize pressure-sinkage models based on the assumption that the contact area between a tire and soil can be approximated as a flat plate. Examples include work by Bernstein–Goriatchkin, Bekker, Reece, and Ishigami. Recently, the authors have demonstrated that (1) this assumption does not hold for wheels with a diameter less than approximately 50 cm and (2) an improved diameter-dependent pressure-sinkage model can yield more accurate results. Further improvements to the pressure-sinkage model for small diameter wheels are presented here that account for both wheel width and diameter on compactive soils. Results from 125 pressure-sinkage tests using 35 wheel geometries on a clay/silt mix are presented. X-ray images of sub-surface soil deformation are used to visually validate the model.
► A key assumption of flat-plate pressure-sinkage models is highlighted.
► A review of previous diameter-dependent pressure-sinkage modeling is given.
► A dependence of the pressure-sinkage relationship on wheel width is determined.
► A modified pressure-sinkage model is proposed.
Journal: Journal of Terramechanics - Volume 50, Issue 1, February 2013, Pages 37–44