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Thirdly, with FEM analysis software ANSYS, this paper has fulfilled appropriate pavement FEM models. Selecting right loading locations and parameters, this paper has simulated contact behaviors of limited dimension cement concrete pavement with joints afterwards. The mechanics response results and load transfer ability results of matchboard joints have obtained and the effect of reinforcing steel bars has gained too.

3利用大型通用有限元分析软件ANSYS，建立合理的路面模型，选择合适的荷载位置和荷载参数，模拟有限尺寸设接缝水泥混凝土路面的接触行为，得到水泥混凝土路面的力学性能和接缝传荷能力等结果，并考虑了有无钢筋对路面性能的影响。

Based on the rigid viscoplastic finite element method FEM theory , the bimetal extrusion process in a non steady state was analysed by FEM with frictional elements inserted between two contacting materials .

基于刚粘塑性有限元理论，在双金属相互接触的两种材料之间引入摩擦单元，对双金属挤压的非稳态过程进行了有限元分析。

Combined genetic algorithms with domain decomposition parallel FEM, designed parallel FEM evolutionary displacement back analysis algorithm, developed corresponding program- GAParal-lelFEM3D(version 1.0)using C++.

把遗传算法和区域分解并行有限元算法结合，设计了进化并行有限元位移反分析算法，采用Visual C++开发了进化并行有限元位移反分析计算软件GAParallelFEM3D(v1.0)。

In the course of FEM model building, tensile test experiment is taken to work out the real stress-strain curve. Ring compress test is also done in this paper, through which the friction coefficient is worked out and the friction mechanism and relevant friction model for tube stagger spinning is studied. The experiments ensured the veracity and reliability of the FEM modeling.

建模过程中，通过材料拉伸试验测定了旋压材料00Ni12Cr5Mo4TiAlV时效钢的真实应力应变曲线；利用圆环镦粗试验测定了材料在不同润滑状态下的摩擦系数，并对强力旋压的摩擦性质和摩擦模型的选择进行了研究，确保了建模关键参数的准确性和可靠性。

Furtherly, in allusion to the absence of design standard in FEM, basing subency coefficient and reliability idea, it puts forward subentry coefficiet FEM method.

另外，针对有限元法缺乏配套的设计标准问题，在分项系数法和可靠度思想的基础上，提出了分项系数有限元法。

The operators are simple and easy to be implemented in the FEM. The mathematical models for the combination of ABCs and FEM are investigated and established.

其次研究并建立了标量渐近边界条件与有限元法结合的三维开域静磁场的数学模型，并提出具体的实施方法，推导出相应的离散方程。

Beginning with FEM solution for transient heat conduction, turning to the theory of solar radiation and some heat engineering manuals, utilizing the commercial FEM software ANSYS, the variation regulars to time of temperature field in the standard cross-sections of the composite beam and tower columns of Harbin Sifangtai Bridge have been clarified under the third boundary condition.

本文从非稳态温度场的有限元解法入手，利用太阳辐射的相关理论和国内外热工工程手册上的数据，按第三类边界条件给四方台大桥叠合梁和主塔的一个标准截面施加边界温度荷载，采用ANSYS 软件求出了标准截面温度场随时间变化的规律。

According to modeling planning, the most representative parts as the truncated cone and the truncated pyramid were used to modling, and each has been established two types of finite element analysis model, that is, the whole part FEM analysis model and selected partical part FEM analysis model.

根据建模规划，对渐进成形实验中最具代表性的方锥台件和圆锥台件，各自建立两种类型的有限元分析模型，即完整有限元分析模型和局部有限元分析模型。

It has be approved availability by analyzing, enumerating and validating time after time for the FEM analyzing of some well-set subassembly and has fast, nicety, availability capability for FEM analyzing well-set subassembly.

通过实例，经反复分析、计算与验证，证明这种多软件融合的有限元分析计算方法在有限元分析计算中是切实可行的，能够达到对钢结构件实现快速、准确、有效地进行有限元应力应变分析计算。

First,it mainly utilizes analytics to deduce formula of slot leakage reactance.It considers three instances,including monolayer-slot,multilayer isometric-slot and multilayer anisometric-slot.Then,the analytics and the FEM are utilized to calculate slot leakage reactance of stator winding of prototype of Powerformer and compare their results.Second,the theory of utilitzing FEM to calculate the reactance of Powerformer is simply introduced,including stable reactance,transient and subtransient reactance.Specially,the saturated influence of the stable reactance is considered.Then, the results are analysed.Final,it mainly introduces the influence of harmonic magnetomotive force of stator winding and analyses the harmonic magnetomotive force of stator winding.

首先是用解析法推导出Powerformer定子绕组槽漏抗的计算公式，考虑了单层圆形半闭口槽、多层等半径圆形半闭口槽和多层不等半径圆形半闭口槽三种情况，并对Powerformer样机的定子绕组槽漏抗用解析法和有限元法进行了计算，并比较其结果；其次，简要介绍了有限元法计算Powerformer电抗参数的原理，包括稳态电抗、瞬态电抗和超瞬态电抗，对稳态电抗考虑饱和影响，对结果进行分析；最后，介绍定子绕组谐波磁势对电机运行性能的影响并对定子绕组谐波磁势进行了分析。

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。