轮胎重复通过的性能初探

本文介绍应用Bekker承压模型和Janosi剪切模型来描述我国粘性水田土壤力学特性的试验方法和试验结果的分析。分别采用最小加权二乘法和序贯无约束极小化方法(SUMT)求解土壤特性参数,取得了满意的效果;并且探讨了轮胎重复通过时土壤特性参数和轮胎牵引性能的变化规律。采用正交设计法,进行轮胎牵引性能试验,并分析轮胎的齿高、滑转率、载荷三因素对轮胎重复通过性能的影响,从而对四轮驱动拖拉机重心位置提出了合理的建议。

Performance for Multiple Passage of Pneumatic Tire

This paper introduces the application of Bckkcr pressure-sinkage mo.del and Janosi shear-displacement model to describe the mechanical properties of the paddy soil in China, their method and results. The weighted least square and SUMT (sequential unconstrained minimization technique) method are used to derive the soil characteristic parameters from the experimental data.Satisfactory results are ob-tained.The curves of the soil parameters and traction for multiple passage of the tires are investigated. The experiments are carried out on the effect of lug high, slippage, tire load on tractive performance by orthogonal designs and their results analyzed. The rational suggestions are made on centre of gravity of the four-wheel-drive tractor.