1) discrete element
离散单元
1.
Discrete element numerical simulation is of importance to directing production due to its effectivenessof simulating the whole process of ore caving——a keyprocess in the natural caving system and determining the limit of caving area.
用离散单元数值模拟方法可有效地模拟自然崩落采矿法的关键工艺——落矿的全过程,确定崩落范围,因此对生产管理具有重要指导意义。
2.
Moreover,the discrete element method was applied to the analysis and verification of FAC,based on which a simula.
在分析和验证过程中引入了离散单元方法并开发出了沥青混合料虚拟试验过程。
2) distinct element method
离散单元法
1.
Application of Distinct Element Method to evaluating ground building suitability above coal tunnel;
用离散单元法评价采煤巷道地面建筑适宜性
2.
Numerical study of 2D fluidized bed with the distinct element method;
应用离散单元法对二维流化床内流态进行数值模拟研究
3.
The granular flow simulation of physical performance in rock specimen based on distinct element method;
基于离散单元法的石材制品物理性能颗粒流模拟
3) DEM
离散单元法
1.
Based on the relative data analysis,the present paper introduces numerical methods for the simulation of the blasting destruction for concrete chimney,the current problems and advantages of the DEM(Discrete Element Method) are given.
综合评述可用于分析混凝土烟囱爆破拆除的几种数值方法,指出了离散单元法在分析此类问题中独特的优势和目前存在的问题,最后阐述了利用离散单元法求解混凝土烟囱爆破拆除问题计算模型的初步成果,以期为后续研究提供参考。
2.
Based on experiment results,the DEM simulation was used to analyze the microcosmic relationship between the driving wheel and lunar soil particles.
在此基础上,通过离散单元法(DEM)对驱动轮与月壤相互作用关系进行了细观分析,模拟出驱动轮下月壤颗粒的受力、位移、速度的分布规律及无牵引阻力条件下驱动轮的牵引性能。
4) discrete element method
离散单元法
1.
Failure process simulation of concrete structures bydiscrete element method;
混凝土结构破坏过程的离散单元法模拟
2.
Application of three dimensional discrete element method in studies of debris-flow deposit process;
三维离散单元法在泥石流堆积研究中的应用
3.
Determination of calculating parameters and solution methods of discrete element method;
离散单元法的计算参数和求解方法选择
5) discrete element method(DEM)
离散单元法
1.
The hydrodynamics of the gas-solid flow in a fluidized bed with uneven gas supply was studied by(using) discrete element method(DEM).
采用离散单元法分析了非均匀布风方式下流化床内的气固流动特性。
2.
For dynamics modeling of 3D fluid-solids two-phase flows in engineering problem it was brought forward of particles trajectory flexible model based on the discrete element method(DEM).
为解决工程应用中三维流固两相流动力学建模的难题,提出了基于离散单元法(DEM)的颗粒群轨道柔性模型。
3.
With the consideration of the effect of groundwater, Maliuzui landslide′s genetic mechanism is numerically simulated with the Discrete Element Method(DEM) in this paper.
在坡体中考虑地下水的影响下 ,用离散单元法对麻柳嘴滑坡的成因机制进行数值模拟。
6) Distinct Element Method(DEM)
离散单元法
1.
The nonlinear mechanical model of contact between soil particles was established based on the effects of liquid bridges on mechanical microstructure of soil and the basic Distinct Element Method(DEM) theory.
根据液桥对土壤微观力学结构的影响,在传统离散单元法理论的基础上,建立了土壤颗粒接触非线性力学模型,并对不同切土角推土板前端干土壤的动态行为进行了离散元模拟。
2.
In this paper,the segment-multi-spring model(SMSM)is improved so as to apply the distinct element method(DEM)to the nonlinear analysis of RC beams and columns under common load.
目的为应用离散单元法进行钢筋混凝土梁柱构件在一般荷载作用下的非线性反应分析,对杆段多弹簧模型进行改进。
3.
The development and basic theory of distinct element method(DEM) were introduced in brief.
简述了离散单元法的基本原理及其国内外发展现状 ,介绍了目前地面力学研究领域中离散单元法在土壤机械特性动态仿真中的应用情况 ,分析了离散单元法在土壤动态行为仿真中应用的可行性 ,指出离散单元法应用于土壤这样的多相不连续复合体系中 ,以离散单元的总体行为来描述土壤动态行为具有独特的优越性 ,提出了离散单元法在土壤动态特征研究中的发展趋势和近期需要解决的关键问题。
补充资料：离散时间周期序列的离散傅里叶级数表示
(1)
式中χ((n))N为一离散时间周期序列，其周期为N点，即
式中r为任意整数。X((k))N为频域周期序列，其周期亦为N点，即X(k)=X(k+lN)，式中l为任意整数。
从式(1)可导出已知X((k))N求χ((n))N的关系
(2)
式(1)和式(2)称为离散傅里叶级数对。
当离散时间周期序列整体向左移位m时,移位后的序列为χ((n+m))N，如果χ((n))N的离散傅里叶级数(DFS)表示为,则χ((n+m))N的DFS表示为
式中χ((n))N为一离散时间周期序列，其周期为N点，即
式中r为任意整数。X((k))N为频域周期序列，其周期亦为N点，即X(k)=X(k+lN)，式中l为任意整数。
从式(1)可导出已知X((k))N求χ((n))N的关系
(2)
式(1)和式(2)称为离散傅里叶级数对。
当离散时间周期序列整体向左移位m时,移位后的序列为χ((n+m))N，如果χ((n))N的离散傅里叶级数(DFS)表示为,则χ((n+m))N的DFS表示为
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条