涡轮叶片参数化建模技术研究与系统开发

Technology Research and System Development of Parametric Design Software for Turbine Blade

航空发动机涡轮叶片具有复杂的外形和冷却结构,造型设计周期长、可复用性低。本文开发了一款涡轮叶片参数化建模专用软件,并以榫头结构为例,介绍了参数化设计功能模块的开发流程。先进行特征分析提取参数和约束后,求取草图截面的点列,并以组合NURBS表示和存储几何数据,进行实体造型。软件可实现涡轮叶片外形结构的参数化建模,提高设计效率。

Aero-engine turbine blades have a complex shape and cooling structure,leading to a long modeling design period and low reusability.A specialized software for parametric modeling of turbine blades is developed,and the development process of the parametric design function module was introduced taking the ten on structure as an example.After performing feature analysis to extract the parameters and constraints,the point sequence of the sketch section is obtained.The geometric data is expressed and stored in NURBS,then used for solid modeling.The software is capable of parametric modeling of external structure of the turbine blade,which can improve design efficiency.