| 1. | With the development of finite element technique and computer technology , numerical simulation has become an effective tool for optimal designing and analyzing the process gradually
随着有限元技术与计算机技术的发展,数值化模拟已经逐渐成为工艺分析和优化设计的有效工具。 |
| 2. | The acoustic reflections from a submerged piezoelectric / elastic bilaminar sphere shell are studied by applying of the computational software ansys in which the finite element technique is used
摘要采用有限单元计算软件ansys对无限水域中压电弹性材料复合层球壳的声波反射进行了数值研究。 |
| 3. | The forward problem is solved using a finite element technique in two dimensions that is a foundation of the inversion problem . this paper finished 2 - d finite element forward program based on the theory of 2 - d finite element technique
正演计算是电阻率反演成像的基础，本文从二维有限元基本理论出发，完成了高密度电法的二维有限元正演模拟程序，为后期多方法反演奠定了基础。 |
| 4. | Based on two - dimensional muti - classs continuous equlibrium assignment model , a new model using triangle finite element technique is proposed to solve the sensitivity analysis problem of regional transportation pivots
摘要在二维连续空间多类型平衡配流模型的基础上，采用三角形单元有限元离散方法，建立了区域交通枢纽设施敏感性分析的一般模型，并给出了常用指标的敏感性计算公式。 |
| 5. | Application of structural optimization and nonlinear finite element technique to nonlinear multi - component structural system ( assembly ) is studied for the sake of the obturator of the breech mechanism of an automated mortar . the method and technology for optimizing nonlinear multi - component structural system with contact is mainly researched in this thesis
以某自动迫击炮炮闩闭气结构为背景，对结构优化与非线性有限元技术在多构件非线性结构(装配体)系统中的应用进行研究，着重在对存在接触关系的多构件非线性结构系统进行优化设计的方法和技术途径方面进行了研究和探索。 |
| 6. | Different modals of sr motor are completely calculated and analyzed by using ansys in this paper . this paper also presents a detailed research on the stator mode shapes and natural frequencies of srm by use of 3d finite element technique , based on its real structural model for the first time . when the reseach conclusions is compared with the former results , a conclusion will be drawn , that is the rationality and approach to reality of the modeling are essential to the fe analysis of motor properties
应用有限元软件ansys对电机进行了不同建模方法的模态分析与计算，并首次基于真实sr电机定子模型，用3d有限元方法研究了定子模态和固有频率，从取得的一系列研究结论，与以前的研究成果进行对比，可以得出结论：模型建立的合理性和逼近真实性对于电机各类性能的有限元分析至关重要，要得到尽量准确的结果，必须建立尽量逼近实际的模型。 |
| 7. | Firstly , finite element model of lathe spindle using finite element technique is established , and supporting bearings are treated as springs , unknown physical parameters and partial vibration displacement make up of new solving vector through using method of combination of academic modeling and experiment , mathematic model of solving stiffness of beating of lathe spindle is established using inverse analysis method of response problem finally
建立了机床主轴的有限元模型，将支承轴承简化为支承弹簧，通过理论建模与实验相结合的办法，将待识别的物理参数和部分振动位移组成新的求解向量，利用响应问题的逆分析方法建立了求解主轴轴承刚度的数学模型。 |
| 8. | Research of numerial modelling of the damage initiation and extension during impact of composite laminated structures is briefly introduced , which includes damage criterions , the finite element techniques modelling failure damage initiation and propagation , and analysis of mechanical behaviours after impact
简要介绍了复合材料层合结构冲击损伤破坏过程及冲击后力学性能的数值模拟，包括各种破坏准则、描述损伤破坏产生和扩展过程的有限元方法及冲击后力学性能的研究现状。 |
| 9. | The main popular theoretical method adopted to study end - plate connection is finite element technique under monotonic loading at present . this paper applies nonlinear ( material , geometry and contact ) finite element method to analyze the behaviors of connections under cyclic load at fist time . contact elements are set between end plate and column flange , screw cap and neighborhood plane , bolt bar and hole
对于端板连接的理论分析，目前国内外的研究主要局限在单向加载有限元分析范畴，本文首次采用三维非线性(包括材料、几何与状态非线性)有限元对端板连接进行了循环加载分析，端板与柱翼缘间、螺栓头(帽)与相邻板件间、螺栓杆与孔壁间都设置了反映边界状态的接触单元。 |
| 10. | Using three - dimensional finite element techniques , wave propagation theory , modals synthesis theory and numerical analysis methods , the vibration characteristics of steam turbine system are studied . according the structural features of practical blade discs , the 3 - d 8 - node element model is used because of its fitness to complex structures
本文采用三维有限元技术、波传播理论、接触分析、预应力模态分析等数值分析方法,对汽轮机叶片?轮盘系统的振动特性进行了深入而较全面的分析研究。 |
