航天器工程2011，Vol.20Issue(1)：101-108,8.
着陆作用下月尘激扬的三维离散元分析
3-D DEM Analysis of Lunar Dust Levitation Characteristics during Landing Progress
摘要
Abstract
Based on the particle shape of a simulated lunar dust, four typical types of three-dimensional (3-D) geometric models of irregular particles are built by overlapping rigid spheres units.The discrete element contact mechanics model is built according to the environment and contact characteristics of lunar dust. The discrete element model(DEM) parameters are determined by comparing the data from simulated triaxial tests and actual experiments. By using obtained model parameters, the levitation of lunar dust caused by the landing of a simulated disc body is studied. By tracking the movement of the disc and lunar dust, the motion characteristics and levitating distribution of lunar dust are statistically analyzed. And the influence of the landing speed and the change of the particle stiffness on the levitation of the dust are also discussed.关键词
月面环境/模拟月尘/漂浮/离散元模型Key words
lunar surface enviroments/ simulated lunar dust/ levitation/ DEM分类
航空航天引用本文复制引用
陆鑫,黄勇,李雯,赵瑢,王浚..着陆作用下月尘激扬的三维离散元分析[J].航天器工程,2011,20(1):101-108,8.基金项目
航天润滑专项基金资助课题(HTRH-200902) （HTRH-200902）
