An efficient three-dimensional foil structure model for bump-type gas foil bearings considering friction

作     者：Yongpeng GU Xudong LAN Gexue REN Ming ZHOU Yongpeng GU;Xudong LAN;Gexue REN;Ming ZHOU

作者机构：School of Aerospace EngineeringTsinghua UniversityBeijing 100084China 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2021年第9卷第6期

页      面：1450-1463页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：gas foil bearing bump foil model frictional contact elastohydrodynamics bearing misalignment 

摘      要：This paper presents an efficient three-dimensional(3D)structural model for bump-type gas foil bearings(GFBs)developed by considering *** foil structures are modeled with a 3D shell finite element *** the bump foil mechanical characteristics,the Guyan reduction and component mode synthesis methods are adopted to improve computational efficiency while guaranteeing accurate static responses.A contact model that includes friction and separation behaviors is presented to model the interactions of the bump foil with the top foil and bearing *** proposed structural model was validated with published analytical and experimental *** coupled elastohydrodynamics model of GFBs was established by integration of the proposed structural model with data on hydrodynamic films,and it was validated by comparisons with existing experimental *** performance of a bearing with an angular misalignment was studied numerically,revealing that the reaction torques of the misaligned bearing predicted by GFB models with 2D and 3D foil structure models are quite *** 3D foil structure model should be used to study GFB misalignment.