颗粒物质与固体交界面静摩擦系数的测量与分析

J4 ›› 2011, Vol. 46 ›› Issue (1): 42-45.

颗粒物质与固体交界面静摩擦系数的测量与分析

彭政,王璐珠,蒋亦民

中南大学物理科学与技术学院, 湖南长沙 410083

收稿日期:2010-07-09 出版日期:2011-12-14 发布日期:2011-03-16
作者简介:彭政(1979-),男,博士,讲师,研究方向为颗粒物理.Email:pz177@yahoo.com.cn
基金资助:
国家自然科学基金资助项目(10904175)

Measurement and analysis of static firction coefficient on granular-solid interface

PENG Zheng, WANG Lu-zhu, JIANG Yi-min

School of Physics Science and Technology, Central South University, Changsha 410083, Hunan, China

Received:2010-07-09 Online:2011-12-14 Published:2011-03-16

摘要/Abstract

摘要：

颗粒物质与固体界面的摩擦力是当前颗粒物理研究中经常遇到的边界条件,但文献上对其取值有较大分歧。本文实验测量了颗粒物质与不同固体界面的最大静摩擦力,发现界面摩擦均满足达芬奇摩擦定律,且测得的静摩擦系数约在0.17～0.20之间。而材料手册中同样材料的固-固接触摩擦系数高达0.94,这表明一般不能直接用材料手册的摩擦系数值分析讨论与它有关的颗粒问题。

关键词: 颗粒物质;颗粒界面;静摩擦系数

Abstract:

The friction on interface between granular medium and general solid is an important boundary condition, which is often encountered in research of granular physics. Since the value of the friction coefficients are very different in published literatures, a specialized measurement and research is needed. In this experiment, the coefficient of maximum static friction between the granular matter and different solid surfaces are measured, and the inferface friction follows the fricion law of da Vinci. The measured static friction coefficients of the granular-solid interfaces are about 0.17-0.20, while the value in handbook of material, for solid-solid interface of same materials is about 0.94. These results indicate that the coefficient of friction in material handbook can not be applied to the problem of granular physis directly.

Key words: granular matter; granular interface; static friction coefficient

彭政,王璐珠,蒋亦民. 颗粒物质与固体交界面静摩擦系数的测量与分析[J]. J4, 2011, 46(1): 42-45.

PENG Zheng, WANG Lu-zhu, JIANG Yi-min. Measurement and analysis of static firction coefficient on granular-solid interface[J]. J4, 2011, 46(1): 42-45.

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