空气弹簧隔振器样机垂向刚度特性建模与实验  

Modeling and Experiment on Vertical Stiffness Characteristics of an Air Spring Vibration Isolator Prototype

作　　者：杜畅 付永领[1] DU Chang;FU Yongling(School of Mechanical Engineering and Automation,Beihang University,Beijing 100191)

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《液压与气动》2024年第9期89-97,共9页Chinese Hydraulics & Pneumatics

基　　金：国家科技重大专项(2018ZX02201006)。

摘　　要：空气弹簧隔振器被广泛用于精密仪器和生产设备隔振,其刚度-重力平衡点位置关系,即刚度特性是分析其与其他新兴隔振技术相互作用的重要依据。依据理想气体状态方程建立了某型空气弹簧隔振器样机的垂向刚度特性模型。综合整机振动实验结果与密封橡胶膜的刚度特性测量结果,间接测量了实物样机中空气弹簧的刚度特性。基于实验数据修正了模型,采用幂多项式拟合了气室体积-重力平衡点位置改变量的非线性曲线。减少了模型的刚度计算误差,为后续技术改造奠定了基础。Air spring vibration isolator is widely applied in vibration isolation systems for precision equipment,its stiffness-gravity equilibrium position relation(the stiffness characteristics)is critical for analyzing interactions with other developing vibration isolation techniques.The vertical stiffness characteristics model of an air spring isolator prototype is formulated based on the ideal gas law.The stiffness characteristics of the physical prototype are indirectly measured by combining results of overall vibration experiment and stiffness measurement of the sealing rubber film.The model is rectified utilizing experiment data,through power polynomial curve fitting of nonlinear chamber volume-gravity equilibrium position variation relation.Stiffness calculation error of the model is reduced and fundamental for further technical modification of the prototype is laid.

关 键 词：空气弹簧 隔振器 刚度特性 非线性曲线拟合 

分 类 号：TH138[机械工程—机械制造及自动化]