| 基于NURBS方法的转子表面造型技术 |
| |
| 引用本文： | 刘芳,单德彬,吕炎.基于NURBS方法的转子表面造型技术[J].上海理工大学学报,2007,29(3):289-293. |
| |
| 作者姓名： | 刘芳 单德彬 吕炎 |
| |
| 作者单位： | 1. 上海理工大学,机械工程学院,上海,200093
2. 哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001 |
| |
| 摘 要： | 采用双三次NURBS方法对某型号转子进行几何造型,对造型过程中出现的曲面延伸、求交和裁剪等问题进行了研究.根据叶片的形状特征,以曲线的几何形式为基础,提出了一种简单实用的曲线曲面延伸方法,实现了切矢量连续的叶片型面的延伸.对于两相交面分别为自由曲面和解析曲面的求交问题,提出了一种简化的跟踪算法,实现了转子叶片型面和圆台面的准确求交和裁剪,从而实现转子精确的几何造型.
|
| 关 键 词： | NURBS方法 表面造型 曲面延伸 曲面求交 裁剪 |
| 文章编号： | 1007-6735（2007）03-0289-05 |
| 修稿时间： | 2006-12-11 |
Key technologies for surface modeling of a rotor based on NURBS method |
| |
| LIU Fang,SHAN De-bin,L.Key technologies for surface modeling of a rotor based on NURBS method[J].Journal of University of Shanghai For Science and Technology,2007,29(3):289-293. |
| |
| Authors: | LIU Fang SHAN De-bin L |
| |
| Institution: | College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China ; 2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 , China |
| |
| Abstract: | Double NURBS method is used to construct the surface model of a rotor.The technologies of surface extension,surface intersection and surface trimming are studied.Based on the geometric expression of the NURBS curve,a simple and effective method of curve and surface extension is put forward,and the blade surface is then successfully extended with the tangent vector by repeatedly applying the above method.A simplified tracking approach is adopted to realize the surface/surface intersection,of which one surface is analytic surface and the other is free surface. |
| |
| Keywords: | non-uniform rational B-spline method surface modeling surface extension surface intersection surface trimming |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《上海理工大学学报》浏览原始摘要信息 |
| 点击此处可从《上海理工大学学报》下载免费的PDF全文 |
|
