二维静态颗粒体系中转向系数与体积分数的实验研究  

Experimental investigation on the relationship between steering coefficient and volume fraction in two-dimensional static granular system

作　　者：高立科[1] 胡林[1] 张兴刚[1] 邓雄[1] 

机构地区：[1]贵州大学理学院物理系,贵州贵阳550025

出　　处：《山东大学学报（理学版）》2014年第1期54-58,共5页Journal of Shandong University(Natural Science)

基　　金：国家自然科学基金资助项目(11264006);贵州省长专项基金资助项目(黔省专合字2010-5)

摘　　要：通过实验研究了二维静态颗粒体系中转向系数与体积分数的关系。实验结果表明,当对颗粒施加持续稳定的荷载时,颗粒体积分数增加,转向系数K呈现出先减小后趋向饱和的特性,同时随着颗粒堆积角度的增大,转向系数K呈现出先增大后趋向饱和的特性。最后从理论上讨论了转向系数与堆积角度的关系,给出了符合实验结果的参数关系式。Experimental investigation on the relationship between steering coefficient and volume fraction in two-dimen- sional static granular system was carried. The results show that granular volume fraction increases, steering coefficient decreases gradually and reaches a saturated state while putting a steady stress on the grains continually; at the same time, steering coefficient increases and reaches a saturated state with the increasing of granular stacking angel. Accord- ing to the experimental results, a parameter equation matching with the experimental data was provided.

关 键 词：颗粒物质 转向系数 体积分数 

分 类 号：O345[理学—固体力学]