摘要
介绍了将离散单元方法引入沙粒群分析计算的具体过程和方法。根据赫兹接触理论和非完全弹性碰撞理论,确定了沙粒与沙粒之间本构关系的各接触参数,详细讨论了接触沙粒间相互作用力的分析计算方法,建立了沙粒群的散体动力学模型。
The DEM is applied to study the dynamics process of sand group. Based on the constitutive relations of the sand stack, contact parameters are determined according to the theory of Hertz contact and the theory of incomplete elastic impact. The interactive force between the contacted sands is analyzed, and a dynamical DEM model of sand group is established.
出处
《科技导报》
CAS
CSCD
2008年第6期66-69,共4页
Science & Technology Review
基金
国家自然科学基金项目(10572027)
关键词
风沙运动
沙粒群
动力学建模
DEM方法
本构关系
wind-blown sand
sand group
dynamics modeling
discrete element method
constitutive relations
