The application of the Natural Element Method (NEM) to problems in two-dimensional elastostatics is presented.
介绍自然单元法（NEM）在处理二维弹性力学问题中的应用。
The local natural element method(LNEM) which can be used in the automatic analysis of geotechnical engineering problems is implemented for solving the elasticity problem.
提出了一种能够用于实际岩土及地下工程全自动分析计算的数值计算新方法——局部自然单元法。
As lead and arsenic pollution element are skew distribution, statistics of a natural background value and a content of lead and arsenic are worked out using median method of skew distribution.
由手铅、砷污染元素呈偏态分布，故采用偏态分布中的中位数法作了铅、砷自然背景值及含量的统计。
In this paper, we investigate the natural boundary element method for the boundary value problem of harmonic equation in an exterior elliptic infinite sector domain.
研究了椭圆外无穷扇形区域上调和方程边值问题的自然边界元法。
In this paper, the natural frequencies and modes of box water body researched by using three-dimensional finite element method.
本文运用三维有限元方法离散水体，研究了箱形术体的自振频率及动水压力振型。
This paper gave the computer simulation of natural frequencies and vibrational modes of truck frames, based on the structural features of the frame, by finite element method of thin wall rod system.
本文根据汽车车架结构的特点，应用薄壁杆系有限单元法，对汽车车架的固有频率和主振型进行了计算。
A new method, on-line measurement of the density of natural gas, has been established by researching on vibrating element density transducer tests.
前言：通过应用振动式密度计试验研究，在国内建立起一种天然气密度在线测量的新方法。
A new method, on-line measurement of the density of natural gas, has been established by researching on vibrating element density transducer tests.
通过应用振动式密度计试验研究，在国内建立起一种天然气密度在线测量的新方法。
A concept of natural formation and a general RT design method are proposed based on the relative Orbital Element method and the relative motion equation in this paper. An example is given.
基于相对轨道根数法，根据卫星相对运动方程，提出了“自然队形”的概念及队形设计的一般方法，并给出了具体的例子。
The natural modes and frequencies of the framework of a knit-weaving machine are determined and its mechanic model established on the basis of finite element method.
本文用有限元素法建立织编机机架的力学模型，并计算了机架的低阶固有频率及相应的振型。
The computation of natural convection in the annulus between horizontal concentric cylinders using spectral element method in polar coordinates is presented in this paper.
提出了将谱元方法应用到极坐标系下，利用极坐标系下的谱元方法求解环形空间内自然对流问题。
The natural frequency of the gas column in simple pipelines was solved using the finite element analysis method. The result agreed with that derived with transportation matrix method.
采用有限元分析方法，对简单管道气柱的固有频率进行求解，其结果与用传递矩阵法求得的结果是一致的。
The natural frequencies of beam are calculated with finite element method in the cases of different crack width and different crack depth.
本文利用有限元法分别计算在不同的裂纹深度、不同的裂纹开口宽度的情况下梁的固有频率。
A finite element method for analyzing vibration mode and natural frequency of tire construction was provided.
提供了一种分析轮胎结构的固有振型和频率的有限元方法。
Using this method engineers are able to estimate the errors of structural natural frequencies caused by random structural parameters in finite element analysis.
用有限元方法分析结构固有频率时，利用这个方法能正确估计由于结构参数的随机性而产生的误差。
A finite element method is presented for the calculating natural frequency of turbogenerator stator end windings.
本文提出一种计算汽轮发电机定子绕组端部振动固有频率的有限元方法。
These algorithms are given by both the finite element A- method and the nonoverlapping domain decomposition method based on the natural boundary reduction.
这些算法采用了有限元A-法和基于自然边界归化的非重叠型区域分解算法。
Matrix step is low by using the finite element transfer matrix method. Natural frequency by calculation approaches to actual natural frequency and the error is allowable.
用有限元传递矩阵法分析火炮身管固有振动特性，矩阵阶次低，计算所得的固有频率与实际固有频率接近，误差在允许的范围内。
Authors suggest a practical method based on dynamic analysis of finite element for modifying natural frequencies of hull grillage beam, and its software is completed.
提出一种基于有限元结构动力分析的船体板架固有频率实用修改方法，并进行了软件设计。
The finite element method (FEM) of contact theory and eigenvalue computing is used in this thesis to solve the problem of natural modal analyzing aircraft structure with contact surface.
本文采用接触理论有限元数值方法加特征值计算的方法来解决考虑连接面固有特性计算的问题。
The influence of coriolis force on the natural frequencies of the rotor blades is analysed by the finite element method.
本文用有限元法分析了柯氏力对桨叶旋转面固有振动频率的影响。
In this paper, the basic relations of the natural vibration characteristics of framed structures have been studied by means of the dynamic finite element method.
本文用动力有限单元法对框架式结构自振特性基本规律进行了一定的研究。
In this paper we discuss the natural boundary element method for harmonic equation in an exterior elliptic domain.
本文以调和方程为例，研究椭圆外区域上的自然边界无法。
This paper analyzes the natural frequency and modal loss factor of stiffened plates with viscoelastic damping treatment by finite element method.
对敷设粘弹性阻尼的加筋板的固有频率和模态损耗因子进行了分析。
The finite element method is used to analyse the natural vibration of a exhaust chimney with steel structure in a nuclear power plant, such as the first, the second frequency and their model.
利用有限元法分析了某核电站排气钢塔的固有振动特性，即一阶、二阶振动频率及振型。
The natural vibration problem of the rod can be treated by discretion as a natural vibration problem of a spring-mass system, using finite element method or finite difference method.
杆件的固有振动问题，可用有限元方法或差分法离散化为一个弹簧-质点串联系统的固有振动问题。
The parameters are introduced based on the natural stress modes of the displacement element, and the method of matrix H diagonalization was introduced to improve the calculation of the natural.
本文在位移元本征应力模式基础上引进调节参数，同时，利用矩阵H对角化方法计算杂交元应力子空间的本征应力模式，然后由此方便有效地计算特征值，从而大大提高了计算效率。
Unsteady flow and concentration fields in the liquid phase of a gas-liquid contacting system were simulated to show the natural convection by utilizing the finite-element CFD method.
并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。
Unsteady flow and concentration fields in the liquid phase of a gas-liquid contacting system were simulated to show the natural convection by utilizing the finite-element CFD method.
并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。
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