Nonlinear interval analysis of rotor response with joints under uncertainties

作     者：Yanhong MA Yongfeng WANG Cun WANG Jie HONG Yanhong MA;Yongfeng WANG;Cun WANG;Jie HONG

作者机构：School of Energy and Power EngineeringBeihang UniversityBeijing 100083China Collaborative Innovation Center of Advanced Aero-EngineBeijing 100083China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2020年第33卷第1期

页      面：205-218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 the National Natural Science Foundation of China(Nos.51575022 11772022 and 51475021) 

主　　题：Aero-engine Bolted joints Nonlinear interval analysis method Rotor dynamics Uncertainties Updated Thin Layer Elements(TLE)method 

摘      要：The dynamic influence of joints in aero-engine rotor systems is investigated in this ***,the tangential stiffness and loss factor are obtained from an isolated lap joint setup with dynamic excitation ***,the influence of the normal contact pressure and the excitation level are examined,which revel the uncertainty in ***,the updated Thin Layer Elements(TLEs)method with fitted parameters based on the experiments is established to simulate the dynamic properties of joints on the *** response of the rotor subjected to unbalance excitation is calculated,and the results illustrate the effectiveness of the proposed ***,using the Chebyshev inclusion function and a direct iteration algorithm,a nonlinear interval analysis method is established to consider the uncertainty of parameters in *** accuracy is proved by comparison with results obtained using the Monte-Carlo *** with the updated TLEs,the nonlinear Chebyshev method is successfully applied on a finite model of a *** study shows that substantial attention should be paid to the dynamical design for the joint in rotor systems,the dynamic properties of joints under complex loading and the corresponding interval analysis method need to be intensively studied.