柔性止推气体轴承波箔片排布的结构优化  

Foil Arrangement Structure Optimization of Flexible Thrust Gas Bearing

作　　者：原兆祥 马希直[1] 蔡鹏程 YUAN Zhaoxiang;MA Xizhi;CAI Pengcheng(Helicopter Transmission Technology Key Laboratory,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学直升机传动技术国防科技重点实验室,江苏南京210016

出　　处：《机械制造与自动化》2023年第1期56-58,79,共4页Machine Building & Automation

摘　　要：针对高速空压机模型中的波箔推力轴承,以达到其最大承载力为目标进行优化,对刚性轴承下的承载力进行分析,针对不同的楔形间隙高度进行模拟,得到承载力随楔形间隙高度的变化规律;在考虑箔片之间接触摩擦和波箔之间的相互作用条件下,通过有限元法直接建立结构力学与薄膜流场的耦合模型,计算轴承的承载力;建立关于波箔排布方向角度的参数化模型,得到一定工况下不同波箔排布方向的承载力等相关参数的变化规律,通过数据处理得到最优承载力的波箔模型。For the wave foil thrust bearing in the high-speed air compressor model,the optimization analysis is carried out with the aim at achieving its maximum load capacity.The load carrying capacity under rigid bearing is analyzed,and different wedge gap heights are simulated to obtain the variation law of load carrying capacity with wedge gap height.By finite element method,the coupled model of structural mechanics and thin film flow field is constructed directly and the bearing load capacity is calculated in consideration of the contact friction between foils and the interaction between wave foils.A parametric model about the angle of wave foil arrangement direction is established to obtain the variation law of bearing capacity and other related parameters for different wave foil arrangement directions under certain working conditions,and the wave foil model with optimal bearing capacity is gained through certain data processing.

关 键 词：高速空压机 波箔轴承 流固耦合 接触摩擦 优化分析 

分 类 号：TH133.3[机械工程—机械制造及自动化]