挤压膜轴承静态承载特性研究

发布时间：2018-01-02 05:09

本文关键词：挤压膜轴承静态承载特性研究　出处：《轴承》2017年11期 　论文类型：期刊论文

【摘要】：为研究超声悬浮轴承的静态承载特性,设计了一种径向包容式超声悬浮气体挤压膜轴承。在分析挤压气膜润滑悬浮机理的基础上,利用曲线拟合方法求解挤压气膜模型曲线和厚度方程,根据黏性气体动力学理论建立了描述挤压气膜压力分布的Reynolds方程。采用有限差分法对挤压气膜的压力方程进行离散与差商替换,利用MATLAB自定义函数的功能对离散后的挤压膜方程进行数值计算,对气体挤压膜轴承的悬浮力进行了仿真并通过试验验证了理论分析的正确性。
[Abstract]:In order to study the static bearing characteristics of ultrasonic suspension bearing, a radial contained ultrasonic suspension gas extrusion film bearing was designed, and the mechanism of extrusion film lubrication and suspension was analyzed. The curve fitting method is used to solve the extrusion film model curve and thickness equation. According to the theory of viscous gas dynamics, the Reynolds equation is established to describe the pressure distribution of extrusion film. The pressure equation of extrusion film is discretized and replaced by difference quotient by finite difference method. The discrete extrusion film equation is numerically calculated by using the function of MATLAB custom function. The suspension force of the gas extrusion film bearing is simulated and the correctness of the theoretical analysis is verified by experiments.
【作者单位】：大连交通大学机械工程学院;大连民族大学土木工程学院;
【分类号】：TH133.3
【正文快照】： 随着微机械(MEMS)、精密电子工程、空间技术以及现代医学的发展,对高转速、高精度、集成化的机械设备的需求日益迫切。作为最广泛的回转支承零件,轴承的回转精度和润滑特性成为实现设备高精度不可忽略的影响因素。润滑介质为气体的超声悬浮挤压膜轴承具有摩擦力小、适用范围广

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