| 1. | 2 ) after combining surfaces , two surface curvature is continuous
2 )两曲面之间的拼接可以达到c2连续，满足曲面建模的要求。 |
| 2. | 3 ) when combining surfaces with vertex , surfaces c1 continuous at vertex , c2 continuous other . so , it approve the methods are effective
3 )多曲面有角点拼接时，角点处可以达到g1连续，其它地方达到c2连续。 |
| 3. | The quantitative analyses of three lubricating oil wedge bearing are contributive to understand the dynamics performance of three lubricating oil wedge bearing with horizontal combine surface . the priman research contents of the thesis and its contributions are as followed : 1
论文完成的三油楔平切瓦水平结合面存在贯通的缝隙时轴承动力特性的定量分析结果，可以加深我们对三油楔平切瓦动力特性的认识，具有重要的学术意义。 |
| 4. | In this thesis , the overall optimization designs on surface - emitting lasers with 45 deflector structure are carried out . we have mainly considered two types of surface - emitting lasers with 45 deflector : surface - emitting lasers with 45 intracativity micro - mirrors and combined surface - emitting lasers , and then designed detailed fabrication processes
本论文对45偏转镜面发射半导体激光器结构进行了优化设计，具体考虑了两种45偏转镜面发射半导体激光器：折叠腔面发射和组合式面发射，设计了具体的工艺过程。 |
| 5. | After studying a lot of documents of computer - graphics and computation of geometrical , based on nurbs , which is a pop expression to describe curve and surface , the author put forward a method ? ? to identify bad point by most excursion , to illustrate how to choose smooth base plane , which is not referred in most documents , and to introduce optimize method of operational research to combine surfaces , especially for surfaces combination with vertex , and improvement of combination effect
在解决多曲面有角点的拼接问题中引入了运筹学的优化方法，改善了多曲面拼接的效果，而且在ugii造型软件的基础上，用visualc + + 、 ug / openapi进行二次开发，加入了坏点剔除，曲线光顺，曲面片之间的拼接等功能，很好的解决了反求工程中所遇到的问题。 |
| 6. | According to the analytical method of sub structure , we combine the finite elemental model of different parts and process the combining surface parameter to build the finite elemental model of the system . using the ansys software , we carry on the finite element mode analysis to get the natural frequency and shaking type
根据动态设计的子结构分析方法,将上述系统主要部件的有限元模型组合并分析处理结合面参数构成系统的有限元模型。利用ansys有限元分析软件,对系统进行有限元模态分析,确定系统的各阶固有频率和振型。 |
| 7. | 2 ) for making the meshes consistent on the common boundaries of adjoining surfaces , a new approach of boundary discretization is employed . 3 ) the boundary - representation structure is adopted to fulfill the mesh generation over combined surfaces . 4 ) the quality of surface meshes is improved by point creation on 3d scan lines and diagonal swapping procedure
通过引入可移动的虚边界解决了闭合曲面的剖分问题；通过对邻接曲面公共边界的统一处理，保证了组合曲面拼合处网格的相容性；以边界表示数据结构为基础实现了三维组合曲面的全自动网格剖分；采用空间扫描线布点、诊断交换等技术，优化了网格的质量；并以autocad为支撑平台objectarx为开发工具，开发了一个基于几何造型的曲面三角形网格全自动生成程序。 |
| 8. | The numerical calculating based on reynolds equation are carried out with the help of computer program built by bearing research institute of xi ' an jiaotong university . the calculating results indicated that three lubricating oil wedge bearing with an end - to - end through gap between the horizontal combine surfaces will not be unsteady factor when the bearing load no change . but the horizontal oil film rigidity will reduce and the working position of axle journal in the bearing will change
论文利用雷诺方程对# 5轴承的三油楔水平中分轴承进行了数值计算，计算结果表明，当三油楔轴承水平中分面有贯通的缝隙而轴承的载荷不变时，三油楔轴承不会失稳，但会减小水平方向的油膜刚度，改变轴颈在轴瓦中的工作位置。 |
| 9. | This static finite element modeling method does n ' t need the requirement of the dynamic design of product in the modern industry . otherwise , most work on the surface mesh generation is based on the single trimmed surfaces , and the work to closed surface and combined surface , which are very popular in engineer , is very few
另外，在曲面网格划分方面，当前的研究大多是针对单张非闭合曲面进行的，对于闭合曲面和组合曲面的研究甚少，而这些曲面在实际工程中却是经常使用的。 |
