A short course in:
Fluid Film Bearing Design &
Hydrodynamic Lubrication
August 10-12, 2005
Cleveland Ohio
Objectives:
The purpose of this 3-day course is to
provide engineers with a commanding knowledge on the subject of
hydrodynamic lubrication. The aim is to put the lessons into practice
through detailed worked examples. Included in the course materials are
extensive design guidelines that are not found in any university text
on the subject.
Who Should Attend:
This course is intended for practicing
engineers involved in product design, and bearing selection and bearing
design. At the end of this course you will find yourself with a good
understanding about the subject matter and feel confident enough to
tackle bearing designs.
Program Schedule:
First Day:
8:00am Registration/Check-in
Bingham Bldg., Room 103
Case Western Reserve University
8:20am Welcome Robert L. Mullen, Chair
Dept. of Civil Engineering
Case Western Reserve University
Each Day:
8:30-12:00 Lecture and Discussion
12:00 Noon Lunch
1:00-4:30 Lecture and Discussion
Final adjournment on last day at 3:30pm.
Breaks will be conveniently scheduled at
mid-morning and mid-afternoon.
Outline:
Day 1
Hydrodynamically Lubricated Bearings
- Historical
- Stribeck Curve
- Mechanism for the development of pressure in an oil film.
- The Reynolds equation
General Fluid Properties
- Fluid Viscosity
- The Eyring theory of viscosity
- Viscosity Temperature Dependence - Viscosity temperature
index
- Pressure Effect on Viscosity
- SAE Viscosity classification for crankcase oils -
Multigrade oils - ISO Viscosity grades - Viscosity conversions
- Lubricant additives - Detergent/ Dispersants -
Neutralizers - Oxidation inhibitors - Corrosion inhibitors - Boundary
additives - Viscosity index improvers - Pour point depressants - Foam
depressant
Slider bearings design
- Slider bearings of infinite width - The pressure
distribution
- Load capacity F/L
- Center of Pressure - Friction in a tilting pad bearing -
Friction coefficient in bearings - Oil flow through a slider pad
bearing
- The effect of side leakage on the parameters - Energy loss
in the bearing - Oil flow in a finite bearing
- Temperature increase of lubricant
- Summary of equations as used in Slider bearing design
- Design criteria for slider bearings
- Example design
Day 2
Journal bearing design
- Geometry
- Load carrying capacity for half Sommerfeld bearing
- Friction and power in the Sommerfeld bearing
- Coefficient of friction for Journal bearings (half
Sommerfeld)
- Oil flow in the half Sommerfeld bearing - Temperature in
Journal bearings - The effect of side leakage on load capacity
- Summary of variables- Design chart for optimum journal
bearing - Design tables for 360 degree journal bearings
- Temperature rise in a finite Journal Bearing
- Friction in real Journal Bearing
- Design criteria for Journal bearings
- Example design
Hydrostatic Bearings
- Simple thrust bearing design & analysis
- Compensation
- Bearing operating conditions
- Choice of pressure ratio
- Total losses
- Design criteria for hydrostatic bearings
- Example design
Day 3
Bearing Materials
- Economics Technical aspects
- Classification of Bearing Materials
- Selection Procedure for Bearing Materials.
- Mating Surfaces
- Other Issues
Bearing reliability testing
- Background
- Bearing Reliability History.
- Weibull Methods
- Evaluation of Bearing Reliability
- Detailed Test Specifications
Selection Procedures for Bearings
- Load-speed characteristics of bearings
- Solid lubricant bearings
- Rolling element bearings
- Hydrodynamic bearings
- Hydrostatic bearing
- Load-speed characteristics of real bearings
- Other bearing parameters
Course Materials:
A set of class notes which cover all the
material discussed is included in the price of the workshop along with
an extensive section of references and related material. Upon request,
free bearing design software is available.
Speaker:
Joseph L. Tevaarwerk
Dr. Tevaarwerk is an internationally
known authority in the field of Tribology. He specializes in failure
analysis and has over 30 years of experience as a university professor,
an engineer in industry and a private consulting practice with an
emphasis on the applied aspects of this science. This applied aspect
involves failure analysis, design of hydrodynamic bearings, connecting
rod bearings, rolling element bearings, as well as the design of
mechanical components involving friction, lubrication, and wear. He has
been on the faculty of the University of Waterloo, on the staff at
Battelle Memorial Institute and on the staff at Emerson Electric &
Mercury Marine.
Particular areas that have benefited
from his tribology skills are the ATV industry, the fractional
horsepower electric motor industry, the outboard motor industry, the
small gasoline engine industry, and many others.
As an independent consultant he is very
active in applying new and current methods integrating tribology,
design analysis, warranty data, reliability, failure analysis, and
product testing to arrive at safe, reliable and durable products. He
received his B.S. and his M.S. in Mechanical Engineering from the
University of Waterloo in Canada, and his Ph.D. in Mechanical
Engineering from the University of Cambridge.
Discount available if three or more
enroll from one company.
CASE reserves the right to amend the
program should circumstances warrant such action.
In the event of course cancellation,
Case Western Reserve University will refund course fees. Liability for
course cancellation is specifically limited to the amount of pre-paid
course fees and excludes any incidental or consequential damages.
General Information
Enrollment: Course enrollment
is limited. Please reserve your place now!
Registration Deadline:
August 4, 2005
Fax enrollment form to: (216)
368-5229 or Mail enrollment form to address below.
Fee Covers: Notebook,
program materials, break refreshments and lunches. Lodging and other
meals NOT included. A Certificate of Participation
is presented to each registrant. Proceedings are not published.
Refunds and Cancellations:
There is a $50 administrative fee for any registration cancellations.
To cancel, you must call our department at (216) 368-2952 seven
(7) working days prior to the program start date to
obtain a cancellation number. If you
cancel less than seven working days prior, or the above procedure is
not followed, you will be liable for the full fee. Enrollment
substitutions may be made at any time.
Location: This program
will be held at:
Case Western Reserve University
Bingham Bldg., Room 103
10900 Euclid Ave.
Cleveland, OH 44106
Lodging: Please make
your own lodging arrangements at the facility of your choice. Local
hotel information can be found at http://www.cwru.edu/menu/lodging/.
Please advise us at the time of registration if you are physically
challenged and require special accommodations. All requests will be
kept confidential.
Suggested Attire: Casual
business dress is appropriate. Please be prepared for a moderate
temperature variation in the seminar room.
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