三元点元素叶片展开

Blade Development for Ternary Point Element

用数值分析理论对座标点给出的三元叶片，在选定截面上构成三次样条函数；以函数描述叶片曲面，插值求点。从而求出了三次样条函数Zi=f(xi)o并指出这种三元点元素展开叶片的实用性。

Three times spline function is formed on the selected section using numerical analysis theory of ternary blade given by coordinate point,Blade curved surface,interpolation and evaluating point are described by functions. and thus, three times spline function Zi=f(xi) is evaluated. The practicability for ternary point element developed blade is pointed out.