Robust Optimization Design for Turbine Blade-Tip Radial Running Clearance using Hierarchically Response Surface Method

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Chen, Zhiying^1 ; Zhou, Ping^1

School of Energy and Power Engineering, Beihang University, Beijing

100191, China^1

关键词: Blade tip clearance;    Computational precision;    Mechanical assembly;    Response surface approximation;    Response surface method;    Robust optimization algorithm;    Robust optimization design;    System approximation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012066/pdf
DOI  :  10.1088/1757-899X/269/1/012066

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Considering the robust optimization computational precision and efficiency for complex mechanical assembly relationship like turbine blade-tip radial running clearance, a hierarchically response surface robust optimization algorithm is proposed. The distribute collaborative response surface method is used to generate assembly system level approximation model of overall parameters and blade-tip clearance, and then a set samples of design parameters and objective response mean and/or standard deviation is generated by using system approximation model and design of experiment method. Finally, a new response surface approximation model is constructed by using those samples, and this approximation model is used for robust optimization process. The analyses results demonstrate the proposed method can dramatic reduce the computational cost and ensure the computational precision. The presented research offers an effective way for the robust optimization design of turbine blade-tip radial running clearance.