Reconstruction Method for Running Shape of Rotor Blade Considering Nonlinear Stiffness and Loads

作     者：WANG Yongliang KANG Da ZHONG Jingjun 

作者机构：Marine Engineering College Dalian Maritime University Dalian 116026 China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2017年第26卷第5期

页      面：431-439页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by National Natural Science Foundation of China,Grant No.51606023 and 51436002 Natural Science Foundation of Liaoning Province,Grant No.2015020130 Fundamental Research Funds for the Central Universities,Grant No.3132017015 

主　　题：Blade reconstruction Fluid-structure interaction Aeroelasticity Nonlinearity 

摘      要：The aerodynamic and centrifugal loads acting on the rotating blade make the blade configuration deformed comparing to its shape at rest. Accurate prediction of the running blade configuration plays a significant role in examining and analyzing turbomachinery performance. Considering nonlinear stiffness and loads, a reconstruction method is presented to address transformation of a rotating blade from cold to hot state. When calculating blade deformations, the blade stiffness and load conditions are updated simultaneously as blade shape varies. The reconstruction procedure is iterated till a converged hot blade shape is obtained. This method has been employed to determine the operating blade shapes of a test rotor blade and the Stage 37 rotor blade. The calculated results are compared with the experiments. The results show that the proposed method used for blade operating shape prediction is effective. The studies also show that this method can improve precision of finite element analysis and aerodynamic performance analysis.