在中心区域采用离散元分析，其周围区域采用有限差分法分析。
The DEM is used in the focus zone, and the finite difference method is used in the surrounding zone.
采用离散元方法，对喷动流化床内的颗粒混合特性进行了三维直接数值模拟。
Numerical simulations on particle mixing characteristics of spout-fluid bed were carried out in three dimensional based on discrete element method (DEM).
采用离散元方法中的动态松驰技术，在无须组装整体渗透矩阵的情况下求解裂隙网格各结点的水头值。
The dynamic relaxation technique in discrete element method is introduced to solve the permeability field without assembling the global matrix.
提出了采用基于颗粒接触力学原理的离散元法对耕作土壤动力学问题进行数值模拟的新思路。
A new simulation strategy using the Discrete Element Method (DEM) based on spherical particle contact mechanics to tillage soil dynamics was proposed.
体元模型由块体组成，块体之间界面采用连续函数或离散点插值表示。
The volume element model is composed of blocks, in which the interfaces between blocks represent by continuous function or interpolation at discrete points.
基于点的绘制技术使用离散的三维密集点云来表征模型表面，目标是采用点元作为基本绘制单元在三维密集点云中重构出连续、视觉等价的模型表面。
Point-Based Rendering uses discrete and crowded point cloud to represent the surface of model, and it's goal is to reconstruct a continuous and equivalent surface from the point cloud.
对浓度方程在时间上进行了一阶和二阶离散，采用间断有限元格式；
The first order and the second order of fully discrete discontinuous finite element schemes are proposed for the concentration equation.
采用多刚体离散元方法对长管线系统进行计算分析。
The multi-rigid-body discrete element method was proposed for the analysis of deep-ocean mining pipe system.
将土与群桩体系视为一个整体进行有限元离散，采用等效线性化方法考虑土体的动力非线性性能。
The interaction system as an integrality is modeled by some finite elements and the dynamic nonlinearity of soils is considered through the equivalent linearity method.
通过实例介绍了一种新型的筒仓结构分析设计方法，该方法采用弹性壳单元和考虑剪切变形的梁单元对筒仓结构进行有限元离散和分析。
In this paper, a new method of analysis and design of silo structure is introduced, which USES elastic shell element and shear-considered beam element.
采用三维离散元程序研究了岩体中爆炸波的传播过程。
The three-dimensional discrete component process is applied to study the propagation course of explosive wave in rock.
采用加权残值法对耦合方程组进行有限元离散，并推导相应的弹塑性矩阵。
The governing equations are discredited by using Galerkin method, and the matrix for elastoplastic constitutive model is also deduced.
采用三维离散元方法，模拟含节理岩块的单轴受压试验。
Discrete element method (DEM) based numerical simulation is conducted for the jointed rock under uniaxial press loading.
采用空间薄壁板壳元与空间梁元混合离散模型对大吨位起重机钢丝绳缠绕卷筒进行有限元分析，将有限元方法与进退法优化方法耦合形成数值算法进而对卷筒进行优化设计。
The numerical method represents a coupling between the optimum method of advance and retreat and the finite element analysis for the design on large hoist drums of cranes that is an actual structure.
该方法既采用了有限元法处理离散结构的便利，又通过力学途径来减少所需求解的未知量。
The method not only possesses the FEM advantages for discrete structures, but also reduces the unknowns in structural analysis.
以典型月壤的物理力学性质为参照标准，采用颗粒流程序PF C3D对月壤静力学特性进行了离散元模拟研究。
According to its physical mechanics properties, the statics characteristic of lunar soil is studied using DEM software PFC3D.
首先采用有限元法，将撞击体离散成由三维实体单元构成的具有一定初始速度的离散质量系统，对靶板采用二维壳单元离散。
According to Finite Element Method, the impactor is considered as a discrete mass system in terms of 3D solid element with initial velocity, and 2D shell element is used for target plate.
采用八节点的等参单元在空间上进行离散，建立了便于敏度分析的非线性正演和反演的有限元模型，可直接求导进行敏度分析。
The eight-point finite element is used for the discretization in the space system. The finite element model is given, facilitating to sensitivity analysis for non-linear direct and inverse problems.
采用空间梁单元将大跨连续刚构桥的桥墩进行有限元离散，建立了大跨连续刚构桥的桥墩静力非线性分析的空间杆系计算模型。
The concrete contents are as follows: 1. A computational model, which is used to analyze the nonlinear static behavior of the pier, is established by use of space beam element.
空间上采用有限元线法进行半离散化，采用已有的轴对称单元、平面单元；
Using Finite Element Method of Lines smash the area in semidiscretization with plane or axial symmetry element which is develop by the postgraduate last session;
空间上采用有限元线法进行半离散化，采用已有的轴对称单元、平面单元；
Using Finite Element Method of Lines smash the area in semidiscretization with plane or axial symmetry element which is develop by the postgraduate last session;
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