| 着陆作用下月尘激扬的三维离散元分析 |
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| 引用本文： | 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 |
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| 作者姓名： | 陆鑫 黄勇 李雯 赵瑢 王浚 |
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| 作者单位： | 1. 北京航空航天大学航空科学与工程学院,北京,100191
2. 北京航空航天大学航空科学与工程学院,北京,100191;米兰理工大学机械工程系机器人技术实验室,意大利米兰,20156 |
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| 基金项目： | 航天润滑专项基金资助课题(HTRH-200902) |
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| 摘 要： | 基于模拟月尘的细观颗粒形状,采用刚性圆球单元重叠法建立了4种典型不规则模拟月尘颗粒的三维几何模型.根据月尘所处环境和颗粒间接触特性,建立了月尘离散元接触力学模型.通过三轴压缩实验离散元模拟的结果和模拟月尘的实际三轴压缩实验数据的对比,确定模拟月尘颗粒的三维离散元模型参数.采用建立的模型和获得的参数,进行了圆盘模拟体着陆...
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| 关 键 词： | 月面环境 模拟月尘 漂浮 离散元模型 |
3-D DEM Analysis of Lunar Dust Levitation Characteristics during Landing Progress |
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| LU Xin,HUANG Yong,LI Wen,ZHAO Rong,WANG Jun. 3-D DEM Analysis of Lunar Dust Levitation Characteristics during Landing Progress[J]. Spacecraft Engineering, 2011, 20(1): 101-108 |
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| Authors: | LU Xin HUANG Yong LI Wen ZHAO Rong WANG Jun |
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| Affiliation: | LU Xin1 HUANG Yong1 LI Wen1,2 ZHAO Rong1 WANG Jun1(1 School of Aeronautics Science and Technology,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) (2 Laboratory of Robotics,Department of Mechanics,Politecnico di Milano,Milano,20156,Italy) |
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| 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... |
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| Keywords: | lunar surface enviroments simulated lunar dust levitation DEM |
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