刚性泥沙颗粒在刚性表面上的起动准则
Incipient Motion Criteria for a Rigid Sediment Grain on a Rigid Surface
摘要：
本文从第一性原理出发，研究了初始静止在刚性表面上的刚体的初始运动准则。提出了一种修正的库仑摩擦模型和相应的反作用力分布。然而，存在着一个令人惊讶的大类别的一般运动，它们赞同更传统的分析;通过识别所谓的"重要反应面“，这种分析成为可能。以这种方式，设计了一个模型，该模型迎合了大多数组合的平移和旋转。一些介绍性的结果表明，流体的数值模拟夹带的目的，可以与准确性。这部作品是同一作者以前作品的延伸。
英文摘要：
Criteria for the incipient motion of a rigid body initially resting on a rigid surface are formulated from first principles in this work. A modified Coulomb friction model and an associated distribution of reaction forces are proposed. There exists a surprisingly large category of general motions, however, which subscribe to a more conventional analysis; an analysis made possible by identifying so-called ``significant reaction surfaces''. In this way a model which caters for the majority of combined translations and rotations is devised. Some introductry results demonstrate the accuracy with which fluids can be numerically modelled for the purposes of entrainment. This work is an extension of previous work by the same author.
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