在履带行走机构的作用下,土壤压实通常会伴随着横向扰动并产生位移,所以履带与土壤相互作用时的影响区域是三维的,为了更加全面地剖析履带-地面相互作用,预测牵引力,应该从三维的角度分析履带-地面相互作用.首先应用Mckyes-Ali三维模型对挡板与土壤之间的相互作用进行分析,并讨论了挡板-地面相互作用与履带-地面相互作用的相似性.将三维模型应用到履带-地面作用分析中,引用相关试验数据,以挂钩牵引力为评价标准,验证了三维模型的实效性——与贝克模型进行对比,由三维模型得到的预测值更加接近实测值.三维模型的研究为履带-地面力学的进一步研究提供了借鉴,为从三维空间分析履带与地面之间的相互作用提供了理论基础和依据.%Under the action of the crawler of the tracked vehicle, the soil compaction produces a displacement, with transverse perturbation so the affected area under the interaction between the track and the soil is 3D. To analyze the track-terrain interaction more entirety and forecast the draw-pull, the track-terrain interaction should be analyzed from the view of 3D. At first, Mckyes-Ali 3D model was used to analyze the interaction of the baffle and the terrain, and the similarity of the baffle-terrain interaction and track-terrain interaction was discussed. The 3D model was used to analyze the track-terrain interaction. The effectiveness of the 3 D model was verified by using the experimental data and choosing the drawbar pull as evaluation criteria. And by comparing the 3D model with Bakker model, the predicted value from the 3D model is closer to the measured value. The study of 3D model provides the reference for the further study of the track-terrain mechanics and also provides a theoretical basis and foundation for the analysis of the interaction between the track and the terrain in the 3D space.
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