欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
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。
英文摘要：
On the lunar surface, the gravity is only 1/6gwhile it is 1gon 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.
同期刊论文项目
同项目期刊论文
Experimental investigation on deformation behavior of TJ-1 lunar soil simulant subjected to principa
Analysis of stress redistribution in soil and earth pressure on tunnel lining using the discrete ele
Modeling shear behavior and strain localization in cemented sands by two-dimensional distinct elemen
Numerical analyses of braced excavation in granular grounds: continuum and discrete element approach
A simple distinct element modeling of the mechanical behavior of methane hydrate-bearing sediments i
Numerical simulation of desiccation cracking in a thin clay layer using 3D discrete element modeling
Contact behavior of idealized granules bonded in two different interparticle distances: An experimen
An analytical approach for the sequential excavation of axisymmetric lined tunnels in viscoelastic r
Study of mechanical behavior and strain localization of methane hydrate bearing sediments with diffe
DEM-aided discovery of the relationship between energy dissipation and shear band formation consider
Unified soil behavior of interface shear test and direct shear test under the influence of lower mov
Analytical Solutions for the Construction of Deeply Buried Circular Tunnels with Two Liners in Rheol
A bond failure criterion for DEM simulations of cemented geomaterials considering variable bond thic
Distinct simulation of earth pressure against a rigid retaining wall considering inter-particle roll
期刊信息
位置：