Parametric modeling and updating for bolted joints of aeroengine casings

作     者：Zhai, Xue Fei, Cheng-Wei Wang, Jian-Jun Yao, Xing-Yu 

作者机构：Beihang Univ Sch Energy & Power Engn Beijing Peoples R China Hong Kong Polytech Univ Dept Mech Engn Kowloon Hong Kong Peoples R China 

出 版 物：《PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE》 (机械工程师学会会报；C辑：机械工程学杂志)

年 卷 期：2016年第230卷第16期

页      面：2940-2951页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 

基　　金：National Basic Research Program of China National Natural Science Foundation of China Hong Kong scholars program [XJ2015002] 

主　　题：Aeroengine casing bolted joint parametric modeling model updating probabilistic design Monte Carlo method 

摘      要：To establish accurate finite element (FE) model of bolted joint structures of aeroengine stator system (casings), this work implements the parametric FE modeling and updating of bolted joints of aeroengine stator system with multi-characteristic responses (multi-object). Firstly, the parametric FE modeling approach of bolted joint structure was developed based on the thin layer element method. And then the FE model updating thought of aeroengine stator system was developed based on the probabilistic analysis method. Finally, the parametric modeling and updating of the bolted joints of aeroengine stator system with multi-characteristic responses was completed by the optimization iteration calculation of objective function based on the proposed methods and the static stiffness testing data. Through the parametric modeling of bolted joint structures based on the thin layer method, the complexity of FE model of aeroengine casings with many bolted joint structures is reduced. As shown in the FE model updating of casings with multi-characteristic responses analysis, the static stiffness from the updated model are very close to the test data, in which the maximum relative error decreases to 3.9% from 30.52% and the others are less than 3%, so that the design precision of aeroengine stator system with the many and wide variety of bolted joints gets a great improvement. Moreover, the proposed methods of parametric modeling and model updating for multi-characteristic responses are validated to be effective in the simulation and equivalent of the mechanical characteristics of bolted joints in complex systems like aeroengine stator system.