Research on Fractal Contact Model for Contact Carrying Capacity of Two Cylinders’ Surfaces Considering Friction Factors
Research on Fractal Contact Model for Contact Carrying Capacity of Two Cylinders’ Surfaces Considering Friction Factors
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DOI：
10.3901/jme.2016.07.114
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发表时间：
2016
影响因子：
--
通讯作者：
Qi Chen
中科院分区：
文献类型：
--
作者：
Qi Chen
建立了更精确的分析两缸表面接触承载能力的分形接触模型，给出了考虑摩擦因素的新的接触模型的建立过程。该模型是将计算有摩擦弹塑性变形临界接触面积的理论和圆柱体表面接触面积的分布方程代入M-B模型得到的。通过MatLab中主要参数对模型影响的预测分析，得出减小摩擦系数、减小粗糙度幅值、增加材料特性参数有助于提高接触承载能力，改善两个接触体的力学特性；分维对接触承载能力的影响不能用简单的线性关系来描述，最大接触承载能力存在一个最佳值。该模型的研究为齿轮及相关产品的接触承载能力分析提供了新的理论依据。
establish more accurate fractal contact model for analyzing contact carrying capacity of two cylinder’s surfaces, the process of creating a new fractal contact model considering the friction factors is presented. This model is derived by substituting the theory of calculating critical contact area of elastoplastic deformation with friction, and the equation of contact area distribution for cylinder surfaces into M-B model. Through the prediction analysis of the model affected by the main parameters in the Matlab, it is concluded that decreasing the friction coefficient, reducing the roughness amplitude and increasing material propertied parameters is helpful to improve the contact carrying capacity and ameliorate the mechanical characteristics of two contact bodies; the effects of fractal dimension on contact carrying capacity can’t be described as a simple linear relations and there is an optimal value of fractal dimension for the maximal contact carrying capacity. The research of the model helps to provide a new theory conference for analyzing the contact carrying capacity of gears and the other related products.