1 / 8

Fundamentals of Hydrodynamic Lubrication

Fundamentals of Hydrodynamic Lubrication. Shenghui Jia Research Assistant. Outline. Personal Background Motivation & Objectives Bearing Design Evaluation - Fixed-incline slider bearing - Parallel-step slider bearing - Journal bearing Future Work. Personal Background.

nira
Télécharger la présentation

Fundamentals of Hydrodynamic Lubrication

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fundamentals of Hydrodynamic Lubrication Shenghui Jia Research Assistant

  2. Outline • Personal Background • Motivation & Objectives • Bearing Design Evaluation - Fixed-incline slider bearing - Parallel-step slider bearing - Journal bearing • Future Work

  3. Personal Background • August 2009-July 2013 Department of Mechanical Engineering Dalian University of Technology ➢Major: Mechanical Design, Manufacture and Automation ➢Degree: Bachelor of Science ➢ GPA: 3.8/4.0 • September 2013 Joined METL • Research experience ➢Mar 2012 Ultra-precision Grinding Technology for Silicon Wafer Thinning, Research Assistant. ➢ Sep 2011 Design of Low Instantaneous Point Floating Grinding Head, Project Leader.

  4. Motivation & Objectives • Motivation Study and Understand Hydrodynamic Lubrication • Objectives Evaluate Bearing Designs • Inclined Slider Bearings • Parallel Step Bearings • Step Boundary Condition • Journal Bearings • Sommerfeld Solution • Half Sommerfeld Solution

  5. Fixed-incline Slider Bearing Pressure distributions of fixed-incline slider bearing Reduced Reynold’s Equation: (Non-dimensionalized) 1D 2D

  6. Parallel-step Slider Bearing Pressure distributions of parallel-step slider bearing Reduced Reynold’s Equation: (Step Boundary Condition: constant mass ) 1D 2D

  7. Journal Bearing Full Sommerfeld solution Half Sommerfeld solution Pressure distribution of journal bearing Reduced Reynold’s Equation: Reynolds Boundary Conditions: 2D

  8. Future Work • Compound Journal Bearing • Floating pin configuration results in multiple rotational degrees of freedom Bearing rotates pin rotates relative movement occurs f1, f2 • Investigate the pin velocity. Shear forces must balance for an unknown pin velocity, f1=f2. tappet Journal bearings

More Related