颗粒滚动摩擦系数对堆积特性的影响

韩燕龙; 贾富国; 唐玉荣; 刘扬; 张强

doi:10.7498/aps.63.174501

摘要

为探讨颗粒摩擦系数对堆积特性的影响，利用离散单元法，模拟静摩擦系数固定时，变化滚动摩擦系数对椭球形颗粒堆积角及堆积体的影响. 利用自制斜面仪测定了颗粒静摩擦系数，并对滚动摩擦系数与堆积角建立线性方程. 结果表明，滚动摩擦系数对颗粒堆积特性有显著影响，颗粒堆积角随滚动摩擦系数增大而增大，边界圆与连续圆间的间隙随滚动摩擦系数增大而减小. 依据颗粒堆积过程中旋转动能的变化可以阐述上述结果，建立的滚动摩擦系数与堆积角的线性方程可为具体颗粒物料滚动摩擦系数的获取提供数值测量思路. 模拟堆积的过程可为散体物料一些不易测量的参数进行虚拟实验标定.

关键词:

Abstract

The influence of friction coefficient, in terms of fixed static friction coefficient (sfc) and different rolling friction coefficients (rfc), on the accumulation characteristics of particle, including the angle of repose and accumulation body, is simulated using the discrete element method. The sfc of a particle is measured with a home-made cant instrument, and a linear equation is developed to describe the relationship between the rfc and the angle of repose. Results show that rfc has obviously an influence on the accumulation characteristics of particles: the angle of repose of particles increases as rfc increases, the gap between the boundary circle and the continuous circle decreases with increasing rfc. Based on the change of rotational kinetic energy in the process of accumulation of particles, the above results can be explained. And the linear equation can provide ideas for numerical measure of granular rfc. For some difficultly measured parameters of bulk materials, the simulation of accumulation process is a valid virtual calibration test.

Keywords:

作者及机构信息

1.
东北农业大学工程学院, 哈尔滨 150030;

2.
塔里木大学机械电气化工程学院, 阿拉尔 843300

基金项目: 国家十二五科技支撑计划项目（批准号：2012BAD34B0205-2）、黑龙江省自然科学基金（批准号：E201322）和哈尔滨市优秀学科带头人基金（RC2013XK006004）资助的课题.

Authors and contacts

1.
Department of Engineering Northeast Agricultural University, Harbin 150030, China;

2.
College of Mechanic and Electrical Engineering, Tarim University, Alar 843300, China

Funds: Project supported by the State Science and Technology Support Plan during the 12th Five-Year Plan Period of China (Grant No.2012BAD34B0205-2), the Natural Science Foundation of Heilongjiang Province, China (Grant No.E201322), and the Harbin Foundation for Outstanding Academic Leaders, China (Grant No.RC2013XK006004).

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施引文献

[1]	Zhao Y Z, Jiang M Q, Xu P, Zheng J Y 2009 Acta Phys. Sin. 58 1819 (in Chinese)[赵永志, 江茂强, 徐平, 郑津洋 2009 58 1819]
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[3]
[4]
[5]	Gao H L, Chen Y C, Zhao Y Z, Zheng J Y 2011 Acta Phys. Sin. 60 124501 (in Chinese)[高红利, 陈友川, 赵永志, 郑津洋 2011 60 124501]
[6]	Zhao Y Z, Zhang X Q, Liu Y L, Zheng J Y 2009 Acta Phys. Sin. 58 8386 (in Chinese)[赵永志, 张宪旗, 刘延雷, 郑津洋 2009 58 8386]
[7]
[8]	Zhao L L, Zhao Y M, Liu C S, Liu J 2014 Acta Phys. Sin. 63 034503 (in Chinese)[赵啦啦, 赵跃民, 刘初升, 李珺 2014 63 034503]
[9]
[10]
[11]	Abdul Q, Madad A S, Saeed A K 2013 Chin. Phys. B 22 058301
[12]	Abdul Q, Shi Q F, Liang X W, Sun G 2010 Chin. Phys. B 19 034601
[13]
[14]	Xin N 2013 M. E. Dissertation (Jilin: Jilin University) (in Chinese)[心男 2013 硕士学位论文(吉林: 吉林大学)]
[15]
[16]
[17]	Lv H 2008 M. E. Dissertation (Jilin: Jilin University) (in Chinese)[吕昊 2008 硕士学位论文(吉林: 吉林大学)]
[18]	Xiao M H 2013 M. E. Dissertation (Zhejiang: Zhejiang Sci-Tech University) (in Chinese)[肖梦华 2013 硕士学位论文(浙江: 浙江理工大学)]
[19]
[20]	Lidekerke P V, Tijskens E, Dintwa E, Rioual F, Vangeyte J, Ramon H 2009 Powder Technol. 190 348
[21]
[22]	Li Y Y, Xia W, Zhou Z Y, He K J, Zhong W Z, Wu Y B 2010 Chin. Phys. B 19 024601
[23]
[24]
[25]	Nakashima H, Shioji Y, Kobayashi T, Aoki S, Shimizu H, Miyasaka J, Ohdoi K 2011 J. Terramechanics 48 17
[26]
[27]	Goniva C, Kloss C, Deen N G, Kuipers J A M, Pirker S 2012 Particuology 10 582
[28]
[29]	Ai J, Chen J F, Rotter J M, Ooi J Y 2011 Powder Technol. 206 269
[30]
[31]	Zhou Y C, Wright B D, Yang R Y, Xu B H, Yu A B 1999 Physica A 269 536
[32]
[33]	Zhou Y C, Xu B H, Yu A B, Zulli P 2002 Powder Technol. 125 45
[34]
[35]	Persson A S, Alderborn G, Frenning G 2011 Eur. J. Pharm. Sci. 42 199
[36]
[37]	Temizer I 2013 Tribol. Int. 67 229
[38]
[39]	Wensrich C M, Katterfeld A 2012 Powder Technol. 217 409
[40]	Wiacek J, Molenda M, Horabik J, Ooi J Y 2012 Powder Technol. 217 435
[41]
[42]
[43]	Cleary P W 2013 Powder Technol. 248 103
[44]	Combarros M, Feise H J, Zetzener H, Kwade A Particuology (in press)
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