物理学报Issue(17)：1-7,7.DOI:10.7498/aps.63.174501
颗粒滚动摩擦系数对堆积特性的影响
Influence of granular co efficient of rolling friction on accumulation characteristics
摘要
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.关键词
滚动摩擦系数/颗粒堆积/离散元/模拟Key words
coefficient of rolling friction/particle accumulation/discrete element/simulation引用本文复制引用
韩燕龙,贾富国,唐玉荣,刘扬,张强..颗粒滚动摩擦系数对堆积特性的影响[J].物理学报,2014,(17):1-7,7.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 （批准号:2012BAD34B0205-2）
