计算单元

In this paper the progress in analysis on slope stability by limit equilibrium and finite element methods was introduced.

本文介绍近年在用极限平衡法与有限单元法，分析边坡稳定性方面的一些进展，在基于极限平衡的解析法上，我们导出了多阶斜坡的稳定安全系数与滑裂面角度的计算公式。

A unit has been divided into a number of objects to the calculation of elasticity, according to calculated load displacement of each node.

详细说明：对一个已经分为若干单元的物件进行弹性力学计算，根据荷载算出各个节点的位移。

It is assumed that potential sliding surface of the soil in the back of the retaining wall is composed of logarithmic spiral arc and line.

假定挡土墙后土体潜在滑裂面由对数螺线滑动面和平面组合而成，根据挡土墙后土体薄层单元的平衡条件推导出粘性土层主动土压力的计算公式。

As a result, calculation precision of numerical manifold element method is enhanced.

以此提高了数值流形单元法的计算精度。

A matrix of influence coefficients betweenelements is first calculated.

首先计算了单元间影响系数所组成的矩阵。

On the basis of deriving stiffness matrix of an elastic beam unit, the knowledge of computation mechanics and finite element method are used to analyze the strutbeam under distributional load, a finite element analysis result is obtained through an example calculation, which is compared with those of Ansys and material mechanics so as to demonstrate its correctness.

在求出弹性梁单元刚度矩阵的基础上，利用计算力学和有限元法的知识，对分布载荷作用下的简支梁进行了分析。

Vibration frequency modes of quasi-one-dimensional SiO2 clusters with one chain, two chain, three- and four- membered ring structures were calculated according to the density-functional theory.

运用密度泛函理论，计算了4～24个单元的准一维单链、双链、三元环、四元环管状构型SiO2团簇的振动频率。

The maj or obj ect of this paper is the medium.small size concrete dams that have been used for many years.They have the characteristic that the alteration of water height of reservoirs is unobvious and the dams, displacements are affected mainly by temperature.With a case,the method of stepwise regression is used to analyze the vertical displacement prototyDe observed data.Then regression equation is established,the relation of dam,s displacement with hydraulic pressure、temperature、time effect is analyzed and the displacement change rule is obtained,the dam'S displacement onlv dependent to temperature is received.According to the theory of Finite Elements Method,the quasi-stationary temperature field formula and temperature stress formula are deduced.The QTP program and TFEM3D program are written with FORTRAN.The same case is calculated through QTP program to solve the quasi-stationary temperature and through TFEM3 D program to solve the dam'S displacement and find tlle dam,s deformation rule.This rule is accordant with the regression,S resuIt.

本文主要针对运行期间库水位变化很小、坝体的位移主要受温度变化影响的中小型混凝土坝，结合工程实例，采用逐步回归的方法对垂直位移原型观测资料进行分析，建立回归方程，分析坝体位移与水压、温度、时效之间的关系以及位移变化规律，分析结果坝体位移只与温度有关，而基本上不受库水位变化和时效的影响；根据有限元原理推求了混凝土坝准稳定温度场公式和温度应力公式，利用FORTRAN语言编制出QTP准稳定温度场程序和TFEM3D位移场程序，对大坝的温度场和位移场进行计算，求出坝体结点的变温值和坝体结点位移值以及单元应力分量，分析得到大坝的变形规律与实测资料以及回归统计变形规律一致，说明对坝体准稳定温度场的研究是正确的。

A quadrilateral distortion metric was proposed, which considered both of element minimal angle and warpage. An mesh smoothing approach of combining Laplacian method and μGA for quadrilateral mesh was presented, which could improve the mesh quality significantly without effect the algorithm's performance.

提出一种综合考虑单元最小角和翘曲的四边形网格质量评价标准，以该标准为优化目标，提出了一种以面积为权值的Laplacian方法与小种群遗传算法相结合的网格光顺方法，在兼顾计算效率的同时，可有效地优化网格形态质量。

Consequently, with the support from the minimizing energy method, the results of displacement distribution of the stator at different meshing points were determined as well as the rules were analyzed simultaneously.

以定子齿的截面能量为积分单元，给出了定子齿的势能计算公式，通过最小能量法原理求得了定子齿的位移表达式，分析了在不同的啮合位置定子齿的位移分布规律。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。