Related Experiment Video
Updated: Jan 28, 2026

Effects of Mechanical Methods Used in Peri-implantitis Treatment on Implant Surface Decontamination and Roughness
Published on: March 14, 2025
Interactive Effects of Rarefaction and Surface Roughness on Aerodynamic Lubrication of Microbearings
Yao Wu1,2,3, Lihua Yang4,5,6, Tengfei Xu7,8,9
1State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China. nealjackman@stu.xjtu.edu.cn.
Abstract:
The aerodynamic lubrication performance of gas microbearing has a particularly critical impact on the stability of the bearing-rotor system in micromachines. Based on the Duwensee's slip correction model and the fractal geometry theory, the interactive effects of gas rarefaction and surface roughness on the static and dynamic characteristics were investigated under various operation conditions and structure parameters. The modified Reynolds equation, which governs the gas film pressure distribution in rough bearing, is solved by employing the partial derivative method. The results show that high values of the eccentricity ratio and bearing number tend to increase the principal stiffness coefficients significantly, and the fractal roughness surface considerably affects the ultra-thin film damping characteristics compared to smooth surface bearing.
More Related Videos
Related Concept Videos
Factors Affecting Dissolution: Particle Size and Effective Surface Area
Directing Proteins to the Rough Endoplasmic Reticulum
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular velocity...
Atomic Radii and Effective Nuclear Charge
Predator-Prey Interactions
Buffer Effectiveness
The buffer capacity is the amount of acid or base that can be added to a given volume...

