详细介绍基于连续介质的离散元法的特点；
The characteristics of the continuum-based discrete element method are introduced in detail.
最后，介绍了离散元法的计算控制及滑动与失稳的判据。
In the end, the criteria of computing control, slide and failure in DEM are introduced.
着重介绍了非连续介质模型中的离散元法(dem)：硬球模型和软球模型。
The discrete element method (DEM) is introduced, which includes hard sphere model and soft sphere model.
而离散元法正是充分考虑到岩体结构的不连续性，适用于解决节理岩石力学问题。
It's known that the discrete element method well considers the discontinuity character of rock mass, and can be used to analyze the joint rock mass.
离散元法是基于不连续性假设的数值方法，它特别适合于求解节理岩体中的非连续性问题。
The Distinct Element Method(DEM)is a discontinuum-based numerical method especially applicable to solve the discontinuity problems in jointed rock mass.
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.
应用联合有限-离散元法结合弥散式旋转裂缝模型分析了地震作用下混凝土重力坝动力破坏过程。
This paper uses the combined finite-discrete element method with smeared rotating crack model to analyze the seismic rupture process simulation of concrete gravity dam under the action of earthquake.
利用离散元法，对爆炸排淤的“石舌”形成过程进行了模拟和动画显示，并对模拟结 果进行了分析。
The paper presents a successful numerical simulation of the stone tongue formation in blasting toe-shooting by distinct element method, and an analysis of the numerical simulation results.
介绍了自主研制的三维离散元法分析软件的结构、主要功能及关键技术的实现方法，包括提出的实边界和虚边界的概念等。
This paper introduces the framework, function of the software and the key techniques to realize the software, including actual and virtual boundaries were presented.
在介绍离散元法基本原理的基础上，着重对离散元法在岩土工程领域的应用现状作了叙述和分析，并对其发展趋势进行了探讨。
Firstly the fundamentals of DEM are introduced, and then its applications in geo-technical engineering are summarzied emphatically, and finally the development trends of DEM are discussed.
通过无网格技术，改进了离散元法应变、应力的计算方案，使其能够在连续介质大变形的计算中得到更为准确的应变、应力分布。
Moreover, a new technique for calculating the strain and stress of DEM model has been proposed by using the concept of meshless method.
本文用分片线性元离散椭圆型问题。用预处理共轭梯度法求解有限元方程。
In this paper, the elliptic problems are discreted by linear elements, the finite element system are solved by PCG method.
基于局部作用原理，借用有限元离散和插值技术，引入元胞自动机的演化思路，得到一种新的力学计算方法——元胞单元法。
Based on principle of local action and the idea of cellular automata, a new mechanical method cellular element method is presented through inducting the discrete techniques of finite element method.
最后用有限控制体积法和伽略金有限元法对变换后的方程进行数学离散并求解。
With discrete mathematical method, the transformed equation is solved by finite control volume method and Galerkin finite element method.
由该方程不仅可以得到有限元法，还可得到离散算子差分法。
Both finite element method and discrete operator difference method can be pushed forward from which.
有限元法是一种离散化的方法，它可以直接用来计算荷载不同、刚度不同的各种情况。
The finite element method is a dispersed method, so it can be used directly to calculate the status for different loads, rigidity, etc.
本文通过引进“概率元”，把连续型和离散型两类求概率分布的方法统一起来，建立起“概率元法”的理论及其计算方法。
Introduced is this paper are the probability differential method and the unify way of calculating the probability distribution of the continuous type and that of the discrete type.
对薄壁箱梁结构模糊分析的数值计算理论进行深入研究，提出了基于一维离散有限元法的薄壁箱梁模糊分析理论。
The numerical methods of fuzzy analysis for thin-walled box girders are studied systematically, the one-dimensional fuzzy finite element method for thin-walled box girders is proposed.
代表性体积元法是研究复合材料这类具有多尺度、离散分布多相体的有效手段。
Representative volume element (RVE) is an effective method for analyzing composites with characters of multi-scale and random distribution.
关于离散的拉氏函数，可以进一步的用有限元法去离散。
研究结果表明，从模拟连续模型的精度上看，时域离散化使集中质最有限元法优于一致质量法，前者可取较大时间步长。
This paper shows that the time discretization makes the lumped-mass method much better than the consistent-mass one as accuracy is concerned for simulating wave motion in the continuous model.
本文以一个典型二维涡流场问题作为计算实例，分析了■有限元法求解线性涡流场时产生离散误差的主要因素。
This paper analyses some important factors which cause discretization error in linear eddy-current problems by the finite element method.
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.
运用简单离散方法对该转子轴承系统进行了分析，其结果与有限元法偏差较大。
The rotor bearing system was analyzed by using a simple discrete method. The results of the analysis are quite different from those obtained under the finite element analysis method.
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.
综合运用力学知识，运用有限元的思想，将整个管道离散化，使用迭代法编程求解出了每一部分的变形，并绘制出多种情况下的变形曲线。
This article use the mechanics and limited finite element idea to disperse the whole pipe. The distortion curve is drawn in various circumstance by the iteration programming.
有限元法作为一种离散化的数值方法，是一种近似方法，其理论基础是变分原理。
As a kind of dispersed numerical value method, the finite element is of approximate methods, and is based on principle of variation.
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.
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.
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