| 棒在颗粒物质中穿行时摩擦振荡行为的研究 |
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| 引用本文： | 吴宇,胡林,曲东升,汤燕,张忠政,杜学能,许锋.棒在颗粒物质中穿行时摩擦振荡行为的研究[J].山东大学学报(理学版),2007,42(5):34-37. |
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| 作者姓名： | 吴宇 胡林 曲东升 汤燕 张忠政 杜学能 许锋 |
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| 作者单位： | 1. 贵州大学,理学院,贵州省光电子技术与应用重点实验室,贵州,贵阳,550025
2. 铜仁学院物理系,贵州,铜仁,554300 |
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| 基金项目： | 国家自然科学基金;贵州省高层次人才基金;贵州省省长基金 |
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| 摘 要： | 实验发现，棒在颗粒物质中运动时滑动摩擦力具有准周期振荡性质. 根据颗粒物质的剪胀性对此现象进行了研究，提出相应的物理模型，建立了平均体积分数振荡方程和滑动摩擦力振荡变化关系式，理论计算分析结果与实验结果基本吻合.
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| 关 键 词： | 滑动摩擦力 剪胀性 有效区域 平均体积分数 |
| 文章编号： | 1671-9352（2007）05-0034-04 |
| 收稿时间： | 2007-01-12 |
| 修稿时间： | 2007-01-12 |
The oscillatory friction of rod in the sliding course of granular materials |
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| WU Yu,HU Lin,QU Dong-sheng,TANG Yan,ZHANG Zhong-zheng,DU Xue-neng,XU Feng.The oscillatory friction of rod in the sliding course of granular materials[J].Journal of Shandong University,2007,42(5):34-37. |
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| Authors: | WU Yu HU Lin QU Dong-sheng TANG Yan ZHANG Zhong-zheng DU Xue-neng XU Feng |
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| Institution: | 1. Laboratory for Photoelectric Technology and Application of Department of Physics, Guizhou Univ., Guiyang 550025, Guizhou, China; 2. Department of Physics, Tongren Institute, Tongren 554300, Guizhou, China |
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| Abstract: | It is found that sliding friction between continuous medium and granular materials has a novel speciality of quasi-periods oscillatory. According to the shearing dilatancy of granular materials, this novel phenomenon is studied. Aphysical model i, proposed to explain the experimental results and presents an equation about average density oscillating in the effective region. It addition, a function about sliding friction is elicited. The theoretical results accord well with the experimental results. |
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| Keywords: | sliding friction characteristic of shear dilataney effective region average fraction of the total volume |
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