涡轮叶片异型冠结构优化设计  

Structural optimization design of turbine blade with special-shroud

作　　者：上官荣海 郝艳华[1] 黄致建[1] SHANGGUAN Ronghai, HAO Yanhua, HUANG Zhijian(College of Mechanical Engineering and Automation, Huaqiao University, Xiamen Fujian 361021, Chin)

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《航空动力学报》2018年第2期313-319,共7页Journal of Aerospace Power

摘　　要：在低压涡轮叶片异型冠结构设计研究的基础上,探索异型冠结构优化设计方法。为了达到减轻质量的目的,在传统锯齿冠结构的基础上提出异型冠结构的初步设计方案,并以软件UG NX为平台,实现带异型冠涡轮叶片的参数化设计。通过对异型冠结构参数的灵敏度分析,制定了涡轮叶片异型冠结构的双目标优化设计流程。该方法实现了在保证异型冠结构强度及刚度的前提下,叶冠质量最轻及叶冠质心位置最优调控的目标。优化结果表明:叶冠质量降低了53.05%,最大应力下降了43.41%,最大径向变形量下降了45.80%。Based on the structural design of special-shroud of low-pressure turbine blade,the optimization design method of special-shroud was explored.In order to achieve the purpose of weight reduction,special-shroud structure preliminary design program was put forward on the basis of the zigzag shroud.The model parameterized design was achieved using the platform of UG NX.By the sensitivity analysis of special-shroud structure parameters,the double objective optimization design process of special-shroud was established.It successfully achieved the goals of lightest mass and shroud centroid position optimal regulation under the precondition of ensuring its strength and stiffness by this procedure.The optimization result showed that the mass of shroud was reduced by 53.05%,the maximum stress decreased by 43.41%,and the maximum radial deformation decreased by 45.80%.

关 键 词：涡轮叶片 异型冠 结构优化 灵敏度分析 多目标 

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]