Effect of Air Bearing Pressure and Slider/Disk Contact on Lubricant Depletion Using Molecular Dynamics Simulation

Tang, Zhengqiang; Zhou, Dong‐Dong; Jia, Tong; Zhang, Xun; Pan, Deng

doi:10.1109/tmag.2019.2957111

Cited by 3 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Song et al [26] performed molecular dynamics simulations using four types of PFPE lubricants to study their spreading behavior, air shear behavior, surface contamination, and friction. Tang et al [27] conducted a study using a molecular dynamics model to investigate the effects of contact force, disk velocity, and air-bearing pressure on the penetration depth of the slider and lubricant depletion in the head-disk interface. These works have provided useful approaches and directions for the lubrication design of HDDs and MEMS/NEMS systems.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Slider Configuration on Lubricant Depletion at the Slider/Disk Contact Interface

Chen,

Zhou,

Tang

2024

Lubricants

Self Cite

View full text Add to dashboard Cite

With decreasing clearance between the protrusion of a slider and a disk interface, there is a higher likelihood of contact occurring during shock or vibration experienced by hard disk drives (HDDs), which may induce lubricant depletion. Based on the molecular dynamics (MD) model of perfluoropolyether lubricant with a coarse-grained beads spring approach, we compared the slider configurations’ influence on the lubricant transfer volume quantitatively. By further investigating the parameters of the cylindrical asperities, including the width and depth, as well as considering the asperity amounts of the slider, we successfully observed the lubricant depletion process during slider and disk contact. The results demonstrate that the penetration depth was reduced as the asperity amount increased, mainly owing to the increased contact area between the surfaces. The decreasing depth of the asperity and the increasing width of the asperity helped to reduce the depletion volume. In addition, the utilization of a cylindrical slider configuration can contribute to a reduction in lubricant depletion resulting from contact between the head and disk.

show abstract

Section: Introductionmentioning

confidence: 99%

The Effect of Slider Configuration on Lubricant Depletion at the Slider/Disk Contact Interface

Chen,

Zhou,

Tang

2024

Lubricants

Self Cite

View full text Add to dashboard Cite

show abstract

“…Aerostatic bearings are important mechanical components and have been widely employed in high precision and high speed applications, such as ultra-precision/high speed machine tools, precision instruments, electric motors, and disks [1,2], because of their high accuracy, low noise, zero friction, and long life [3]. High stability and rotational accuracy are very important for the aerostatic bearings.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Analysis of Stability and Rotational Accuracy of an Unbalanced Rotor Supported by Aerostatic Journal Bearings

Yin

Zhang

et al. 2021

IEEE Access

View full text Add to dashboard Cite

This paper presents the nonlinear analysis of stability and dynamic rotational accuracy of an unbalanced rotor supported by aerostatic journal bearings. A finite element method is utilized with the Runge-Kutta fourth order method to solve the transient Reynolds equation and the rotor dynamics equations simultaneously for the dynamic response analysis of the rotor. The dynamic behavior of the rotor center is analyzed under different rotor masses. It is shown that the dynamic responses of the rotor strongly depend on the rotor mass. The periodic, multi-periodic or quasi-periodic motions are observed as the rotor mass changes. Under a given operating speed, the mass at which the resonance occurs is studied and its relationship with the mass of the rotor at the threshold of instability is found for the first time. The influences of supply pressure, bearing clearance, orifice diameter and eccentric distance on the rotational accuracy, the resonance and instability threshold are also investigated. The result of this study can provide guidance for designing aerostatic bearing rotor systems with required running accuracy and stability.

show abstract

Similarity Metric-Based Metalearning Network Combining Prior Metatraining Strategy for Intelligent Fault Detection Under Small Samples Prerequisite

Chang

Chen

2022

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

Effect of Air Bearing Pressure and Slider/Disk Contact on Lubricant Depletion Using Molecular Dynamics Simulation

Cited by 3 publications

References 17 publications

The Effect of Slider Configuration on Lubricant Depletion at the Slider/Disk Contact Interface

The Effect of Slider Configuration on Lubricant Depletion at the Slider/Disk Contact Interface

Nonlinear Analysis of Stability and Rotational Accuracy of an Unbalanced Rotor Supported by Aerostatic Journal Bearings

Similarity Metric-Based Metalearning Network Combining Prior Metatraining Strategy for Intelligent Fault Detection Under Small Samples Prerequisite

Contact Info

Product

Resources

About