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2 旋转工作部件工作过程的动力学模型与数学物理模拟方法由于土壤是一种由不同比例的固、液、气组成的复杂的三相系统,它的物理力学特性带有很大的不确定性和多变性.因此,在研究工作部件与土壤的相互作用过程时,建立一种完全数学模型和纯理论分析方法往往是十分困难的.土壤性质的多变性和理论分析所引入的假设常常使性能预测结果的误差过大而失去实际意义.纯粹的经验方法无法对旋转工作部件与介质相互作用的复杂过程作岀合乎理论的解
2 Dynamic model and mathematical physics simulation method for the working process of rotating working parts Since the soil is a complex three-phase system composed of different proportions of solid, liquid, and gas, its physical and mechanical characteristics are highly uncertain. Because of this, it is often difficult to establish a complete mathematical model and a purely theoretical analysis method when studying the interaction process between working parts and soil. The variability of soil properties and the assumptions introduced by theoretical analysis often make performance The error of the prediction result is too large and loses practical significance. The purely empirical method cannot make a theoretical solution to the complicated process of rotating the working part and the medium.