摘要
实验研究了探测棒在湿颗粒堆中的最大静摩擦力。结果表明,探测棒在湿颗粒堆中受到的最大静摩擦力随颗粒填充高度的增加呈指数增长。当湿颗粒堆的填充高度相同时,圆棒受到的最大静摩擦力最大,三角棒次之,方棒最小。研究还发现,在含水量不同的湿颗粒堆中,液桥力和浮力存在着一种竞争作用,它们都对最大静摩擦力有重要影响。
The maximum static friction exerted on a probing rod immersed in wet granular material was studied using experimental method.The results showed that the maxim of static friction increase exponentially with the heights of wet granular pile increasing.Anong the maxim of static friction exerted on the different rods in a certain heights,it was found that the one exerted on the circle rod was the largest,whereas on the triangle rod followd and on the square rod the smallest.It found also the fact it existd competition between the liquid bridge and the buoyancy in wet granular matter,which played an important impact on the maxim of static friction.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2011年第4期398-402,共5页
Journal of Nanchang University(Natural Science)
基金
国家自然科学基金资助项目(11047022)
贵州省科学技术基金资助项目(黔科合J字2010[2141])
关键词
颗粒物质
静摩擦力
液桥力
granular matter
static friction
liquid bridge
