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A finite element model formed by combining the membrane element and bending element was employed in the warpag...

翘曲变形的模拟中，采用平面膜元和弯曲板元组成的平板型壳元模型，并提出了基于制品表面网格的改进模型，避免了使用传统板壳模型的缺陷。

Productivity is formed by all element, among them science and technology is in controlled position, science and technology is the first productivity, the development level of science and technology, deciding the quality of the worker of the most active element ── in productivity directly, from this and the change that causes other element.

生产力是由诸要素构成的，其中科学技术处于支配的地位，科学技术是第一生产力，科学技术的发展水平，直接决定着生产力中最活跃的因素──劳动者的素质，由此而引起其它因素的变化。

According to the fractional derivative model of viscoelastic damper and force-deformation-slip relation of friction element,a precise finite element model of FVD is constructed,and the method for forming element stiffness matrix and control force vector of FVD is deduced.

针对粘弹性材料的分数导数模型和摩擦单元的力-位移-滑移量的矩阵关系式，建立了FVD精确的有限元模型，推导了FVD单元刚度矩阵和控制力向量计算公式和求解方法；根据钢筋混凝土框架结构的非线性特性，建立了设置FVD非线性钢筋混凝土框架结构地震反应时程分析的控制方法。

The finite element analysis is applied to the frame of a 8 t truck based on ANSYS. The geometrical model and the finite element analysis model with the solid92 element are built. Based on the models, the stress and deformation of the frame are calculated. It may be applied for the improvement of the frame.

利用ANSYS软件对车架进行有限元分析，以某8t载货汽车为例，建立了车架结构的几何模型和以体单元solid92为基本单元的车架有限元分析计算模型，对该车架在载荷作用下的应力和变形进行了计算，可为车架的结构改进提供依据。

Now, whether it be one's own heating element, or whether it be the external heating element, they are both only the heating element.

现在，无论是自己的加热元件，或无论是外部加热元件，他们都只有加热元件。

Chapter 4 puts up the basic theory of non-linear finite element calculation methods and deduces calculation iterative formula and relevant accelerating iterative format. In the calculation of non-linear finite element, yielding element calculation is a difficult problem,"fictitious elastic stress" methods propounded in this paper puts the axe in the helve.

第四章提出了非线性随机有限元法的基本理论，并推导了计算迭代公式，为加快计算速度，提出了相应的加速迭代格式，对于基于非线性随机有限元的可靠度计算中，屈服单元的计算方法是一个难题，本文提出了"虚拟弹性应力"法，较好的解决这个难点。

We discuss the anisotropic interpolation error estimates of parallelepiped element, of brick element and of hexahedral element, respectively.

将二维类Wilson非协调元推广到三维各向异性Wilson砖元和各向异性类Wilson六面体非协调元。

In most water disposal, it pay attention to pollution, and color and Ultimate oxygen demand. But, some like Hydrargyrum, Cadmium and other minim-element, because of minuteness content, it has difficulty to inspect. But super-scale minim-element has harm to body's health. In an more and more pollution society, to inspect the minim-element is especially importance.

在处理自来水的过程中，大多只注重了水中的污染物，色度和部分有机物，对于水中含有的各种微量元素，例如：汞，镉，锌等，通常由于其含量微小，而对其进行常规监测有一定的难度，但是微量元素超标对人体健康有着极其的危害，在社会污染日趋严重的今天，对微量元素的监测显得格外重要了。

In 1977, Nicholson introduced the concept of clean rings as follows: A ring R is said to be clean ring if every element of R is the sum of an idempotent element and an invertible element.

Nicholson引入了一种新的环类，即所谓的clean环：一个环$R$被称为clean环，如果$R$中的任意一个元素均可以表示成R中一个幂等元和一个单位和的形式。

Firstly, the fully discrete standard finite element Galerkin method and the nonlinear finite element Galerkin method and the modified finite element Galerkin method in which time is discretized by the Euler implicit difference scheme are considered, and the - and - global relative errors and CPU time corresponding to the SG method, the NG method and the MNG method are computed respectively.

首先，对于全离散(时间离散是欧拉显式格式)标准有限元Galerkin方法和非线性有限元Galerkin方法以及修正有限元非线性Galerkin方法，分别进行数值计算，并比较了三种算法的计算解与精确解的误差估计及所耗费的CPU时间，结果验证了MNG方法要优于NG方法，而NG方法又优于SG方法。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。