不同重力下月壤水平推剪阻力离散元数值分析

蒋明镜; 奚邦禄; 申志福; 戴永生

doi:10.11779/CJGE201507017

不同重力下月壤水平推剪阻力离散元数值分析 English Version

蒋明镜^{1, 2, 3},
奚邦禄^{1, 2, 3},
申志福^{1, 2, 3},
戴永生^{1, 2, 3}

1. 同济大学土木工程防灾减灾国家重点实验室,上海 200092; 2. 同济大学岩土及地下工程教育部重点实验室,上海 200092; 3. 同济大学地下建筑与工程系,上海 200092

基金项目: 国家自然科学基金项目（51179128）; 国家杰出青年科学基; 金项目（51025932）

详细信息

作者简介:
蒋明镜(1965- ),男,教授,博士生导师,主要从事天然结构性黏土、砂土、非饱和土、太空土和深海能源土宏观微观试验、本构模型和数值分析研究。E-mail: mingjing.jiang@tongji.edu.cn。

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出版历程
- 收稿日期: 2014-07-15
- 发布日期: 2015-07-19

DEM analyses of horizontal pushing resistance under different gravity fields

JIANG Ming-jing^{1, 2, 3},
XI Bang-lu^{1, 2, 3},
SHEN Zhi-fu^{1, 2, 3},
DAI Yong-sheng^{1, 2, 3}

1. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. Dept. of Geotechnical Engineering, Tongji University, Shanghai 200092, China

摘要

摘要: 月面环境下重力场仅为地面环境下的1/6,研究重力场对于开挖阻力的影响,对优化设计月面环境下开挖设备具有重要意义。采用离散单元法模拟不同深度不同重力场下的月壤水平推剪试验（简化的土-开挖机械间相互作用模型）,分析了重力场对开挖试验中推剪阻力、能量消耗和破坏面的影响,最后建立推剪阻力与重力场的关系。结果表明：相同推剪深度下,随重力场增大推剪阻力和能量消耗均增加,推剪前方受扰动土体范围减小;随推剪深度增加,推剪阻力增加。
- 月壤 /
- 离散单元法 /
- 水平推剪试验 /
- 重力场
Abstract: On the lunar surface, the gravity is only 1/6g while it is 1g on the earth surface. Investigating the effects of gravity has great significance to the optimization of excavator designed for lunar excavation. DEM is employed to simulate excavation tests with different excavation depths and gravity fields. The effects of gravity on excavation force, energy consumption and sliding surface are studied. Then the relation among excavation force, depth and gravity is fitted. The results show that the excavation force and energy consumption increase with the gravity while the range of affected area decreases. The excavation force increases with depth.
- lunar soil /
- discrete element method /
- horizontal pushing test /
- gravity field

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参考文献(24)

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不同重力下月壤水平推剪阻力离散元数值分析 English Version

作者简介: 蒋明镜(1965- ),男,教授,博士生导师,主要从事天然结构性黏土、砂土、非饱和土、太空土和深海能源土宏观微观试验、本构模型和数值分析研究。E-mail: mingjing.jiang@tongji.edu.cn。

计量

出版历程

DEM analyses of horizontal pushing resistance under different gravity fields

计量

出版历程

目录

作者简介:
蒋明镜(1965- ),男,教授,博士生导师,主要从事天然结构性黏土、砂土、非饱和土、太空土和深海能源土宏观微观试验、本构模型和数值分析研究。E-mail: mingjing.jiang@tongji.edu.cn。