摘要
非均匀有理B样条(NURBS)技术在近年来得到迅速发展,这里对这种叶片几何造型方法进行了改进,研究了NURBS在叶片设计中的具体应用,包括叶片基元级的中弧线、吸压力面、前后缘的NURBS处理,以及整个叶片的NURBS曲面拟合处理。结果表明,可以用四段NURBS曲线来表示一完整的基元级,用NURBS来设计叶片具有很好的灵活性和统一性,并在优化设计和工程中具有重要的应用价值。
Non - Uniform Rational B - Spline （NURBS） is a new method developed in recently years. This paper presents a new blade design procedure to create blade geometry based on NURBS, which is cur- rently used in the field of Computer - Aided Geometric Design（ CAGD） . The method can be used in mean camber curve, profile and trailing edge of the blade section. In addition the whole blade can be defined by NURBS surface. The advantage is that the each stacked profiles could be described by four NURBS curves,and shows agility and unify. This is very useful in some optimization process and engineering design.
出处
《机械设计与制造》
北大核心
2005年第11期19-20,共2页
Machinery Design & Manufacture
