适应弯扭隔肋的涡轮叶片多种扰流肋造型方法  

Multi-type ribs of turbine blade modeling method fitting bowed-twist wall

作　　者：杨炯[1] 席平[1] 胡毕富[1] 张宝源[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《北京航空航天大学学报》2014年第6期775-781,共7页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目(51075021)

摘　　要：针对弯扭冷却通道内扰流肋的特点,提出了基于等距曲面的扰流肋造型方法,用隔肋等距面和叶盆或叶背等距面裁剪平板工具体得到肋条,以此为基础完成扰流肋建模.深入分析了该方法的原理;提出隔肋面自动识别和曲面匹配算法;提取了关键造型参数;给出了基于草图的参数化实现方法,并在UG上开发出了造型模块,实现了适应弯扭隔肋的多种扰流肋造型.Considering the geometric features of ribs in a bowed-twist cooling passage,a modeling method based on equidistant was presented. It generated rib tools,which was a tablet trimmed by equidistant surfaces of walls in intracavity of blade and pressure slide or suction slide,and then conducted modeling of ribbed channels. Furthermore,the principle of the modeling method was deeply analyzed,and two algorithms were developed,one recognized surfaces of walls in intracavity of blade automatically,the other matched two surfaces. The main parameters were determined as well. Meanwhile,a means based on sketch to parameterize ribbed channels was provided. Eventually,the parametric design module of ribbed channels was developed on unigraphics（ UG）,which achieved multiple ribbed channels modeling.

关 键 词：扰流肋 弯扭隔肋 等距曲面 涡轮叶片 UG Open API 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]