基于LJ势与随机过程的纳米级粗糙表面摩擦力计算模型
发布时间：2018-10-24 16:18
【摘要】：基于接触界面势垒与摩擦接触面形貌的随机特性,建立了一种新的纳米级粗糙表面滑动摩擦力计算模型;利用该模型对满足严格平稳的同种摩擦副材料纳米级随机粗糙表面的摩擦力进行了数值计算.结果表明:经该模型数值计算得出的平均滑动摩擦力与法向载荷呈线性关系;法向载荷与平均接触界面间隙呈指数关系;在相同界面间隙下,平均法向力与粗糙峰高度分布标准差呈线性关系.计算结果与现有的研究结论相符,证明该模型是有效的、可行的;基于该模型,可根据接触界面的形貌分布参数、材料参数与法向载荷预测出平均滑动摩擦力.
[Abstract]:Based on the random characteristics of the contact interface potential barrier and the morphology of the friction contact surface, a new model for calculating the sliding friction force of the nanometer rough surface is established. The model is used to numerically calculate the friction force on the nano-scale random rough surface of the same friction pair which satisfies the strict and stationary condition. The results show that the average sliding friction force is linearly related to the normal load, and the normal load is exponentially related to the average contact clearance. There is a linear relationship between the mean normal force and the standard deviation of the height distribution of the rough peak. The calculated results are in agreement with the existing research results, which prove that the model is effective and feasible. Based on the model, the average sliding friction force can be predicted according to the profile distribution parameters of the contact interface, the material parameters and the normal load.
【作者单位】： 华南理工大学机械与汽车工程学院;
【基金】：国家自然科学基金资助项目(51175182)~~
【分类号】：TH117
本文编号：2291894
[Abstract]:Based on the random characteristics of the contact interface potential barrier and the morphology of the friction contact surface, a new model for calculating the sliding friction force of the nanometer rough surface is established. The model is used to numerically calculate the friction force on the nano-scale random rough surface of the same friction pair which satisfies the strict and stationary condition. The results show that the average sliding friction force is linearly related to the normal load, and the normal load is exponentially related to the average contact clearance. There is a linear relationship between the mean normal force and the standard deviation of the height distribution of the rough peak. The calculated results are in agreement with the existing research results, which prove that the model is effective and feasible. Based on the model, the average sliding friction force can be predicted according to the profile distribution parameters of the contact interface, the material parameters and the normal load.
【作者单位】： 华南理工大学机械与汽车工程学院;
【基金】：国家自然科学基金资助项目(51175182)~~
【分类号】：TH117
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1 刘勤;李娟;刘英;;磨损随机过程建模及实例分析[J];兵工学报;2010年10期
，本文编号：2291894
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