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1)  discrete force method
离散力法
1.
Application of discrete force method in spatial shear walls;
用于空间剪力墙结构的离散力法
2.
Finite element method,similar frame method or continuous method are used to calculate shear wall structures,but always with amonent of working,so a simple ,suitable DFM(discrete force method) is discussed.
为此 ,探讨一种简单、适用的离散力法
2)  implicit forcing method
离散隐力法
3)  dynamic distinct element method
动力离散元法
4)  discrete mechanics
离散力学
5)  discrete element method
离散元法
1.
Application of discrete element method to research and design of working parts of agricultural machines;
离散元法及其在农业机械工作部件研究与设计中的应用
2.
A discrete element method was developed to simulate mixing of elastic materials with the predictions compared to fall-off mixing tests of plastic balls.
为了现实有效地离散弹性体材料拌合的数值模拟,采用离散元法,开发了离散弹性体材料拌合离散元模拟系统。
3.
Base on the basic principles of discrete element method(DEM),A two dimensional DEM emulator named SieveDEM was developed by a VC++.
基于颗粒离散元法的基本原理,采用VC++。
6)  distinct element method
离散元法
1.
A Review on Fundamentals of Distinct Element Method and Its Applications in Geotechnical Engineering;
离散元法及其在岩土工程中的应用综述
2.
Using modified distinct element method, simulation research is conducted on top coal movement at fully -mechanized working face in No2 Coalmine of Dayan Coal Bureau.
用改进的离散元法对大雁矿务局二矿综采放顶煤工作面顶煤活动规律进行模拟研究,分析支架围岩作用关系,找到顶煤丢失原因。
3.
Based on the fact of the rock engineering and the character of the distinct element method, the independent modules are introduced to couple the distinct element method and the boundary element method in this paper.
根据岩石工程实际以及离散元法和边界元法的特点,引入并列模块式结构,提出了一种离散单元法和边界单元法进行外部耦合的算法。
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
  

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