Theoretical and experimental research on static stiffness,performance,and lift-off characteristics of multi-layer gas foil thrust bearings  

作　　者：Yang HU Pengjing DING Fangling WU Xiaojing WANG Bo LIANG Yonggang MENG 

机构地区：[1]School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200072,China [2]Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration,Nanjing Engineering Institute of Aircraft Systems,Nanjing 211106,China [3]State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China

出　　处：《Friction》2024年第11期2458-2479,共22页摩擦（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52275204,51905298,and 52075311);the Shanghai Key Laboratory of Intelligent Manufacturing and Robotics.

摘　　要：In this study,a new comprehensive fully coupled elastic–hydrodynamic model is developed for a multi-layer gas foil thrust bearing(GFTB).The interaction effects among the top foil,back board,middle foil,and bottom foil,as well as the Coulomb friction effect,are considered.The stiffness and static characteristics obtained by the experimental and theoretical approaches are in good agreement,which verifies the accuracy of the model.The contribution of each foil layer to the overall stiffness and the load-carrying mechanism are analyzed.Interaction effects of the load,preload,and rotational speed on the static performance are investigated comprehensively.Furthermore,start–stop tests are performed to achieve the lift-off speed,start-up torque,and shut-down torque under various operating conditions.

关 键 词：MULTI-LAYER gas foil thrust bearing(GFTB) load carrying mechanism static performance 

分 类 号：TH117[机械工程—机械设计及理论]