Homework #1
Name_
Calculate the load capacity and drag torque for a 50 mm diameter, 55 mm long bearing that has a radial clearance of 0.1 mm, a minimum clearance of 0.025 mm that is rotating at 3000 rpm. The lubricant is SAE 30 oil supplied at 65 C
Homework #4
Name_
A 50 mm diameter bearing is 55 mm long and has a central annular oil groove 5 mm wide which is fed by SAE 30 oil at 65 C and 200 KPa supply pressure. The radial clearance is 50 m. The journal speed is 2500 rpm and the load on the
HW 2
Sunday, August 29, 2010 8:55 PM
HW#2
Bearing Design
Name_
1. Calculate the Summerfeld No. and use the charts in the book to calculate the following parameters for the bearing described below. Compare the result to Trumpler's criteria. a. Friction coe
MAE 415
HW#4
Contact Stress
Calculate the contact stress due to gravity loading between a: 1. 25.4 mm diameter steel ball and a glass flat 2. 25.4 mm alumina (Al2O3) ball and a flat glass sample. The glass is BK7 which is mostly SiO2 . Indicate the load,
Homework#3
Name_
A 50 mm diameter bearing is 55 mm long and has a central annular oil groove 5 mm wide which is fed by SAE 30 oil at 65 C and 200 KPa supply pressure. The radial clearance is 50 m. The journal speed is 2500 rpm and the load on the bearing
HW#2 Bearing Design
Name_
1. Calculate the Summerfeld No. and use the charts in the book to calculate the following parameters for the bearing described below. Compare the result to Trumpler's criteria. a. Friction coefficient b. Minimum film thickness (m
Viscosity
A plate of area "A" moving under the action of a force "F" with a resulting velocity "V" over a fixed plate separated by a film of fluid "h" thick. The shear stress on the fluid is "F / A". For a Newtonian fluid the shear stress is directly
Homework
Rolling element bearing design
An 02-Series ball bearing is to be selected to carry a radial load of 8 KN and a thrust load of 4 KN. The L10 life is to be 5000 hours with the inner race rotating at 900 rpm. What basic load rating should be
HW#2 Bearing Design
Name_
(a) Calculate and plot the minimum film thickness (mm) and the frictional power consumed (Hp) for a single hydrodynamic bearing with the following geometry: 50 mm diameter, 50 mm long bearing with a radial clearance of 0.1
Homework #3
Name_
Design the connecting rod bearing for the Grand Prix engine discussed in class. The specs are: Engine capacity = 3500 cc Max engine speed = 15,000 rpm Piston diameter = 86mm Engine stroke = 50.2 mm Piston weight = 24.3 oz = 0
Homework #1
Name_
Calculate the load capacity and drag torque for a 50 mm diameter, 55 mm long bearing that has a radial clearance of 0.1 mm, a minimum clearance of 0.025 mm that is rotating at 3000 rpm. The lubricant is SAE 30 oil supplied at 65 C
TECHNICAL REPORT
entitled
ANALYSIS OF HYDRODYNAMIC BEARINGS
submitted to
MAE 415 - 001
by
T. Dow Box 7918 North Carolina State University Raleigh, NC 27695 919-515-3096 [email protected]
Date
I have neither given nor received any unauthorized a
Dimensional Analysis in Engineering Mechanics
J. W. Eischen
Precision Engineering Center Lunch Seminar August 6, 2004
Cantilever Beam
P L b h
PL3 3EI or L
4 PL3 Ebh3
P LL 4 Eh 2 b h
Note the leading constant is of "order 1," this is typical f
Nutating Reduction Gear Design Analysis
Design Project #2
MAE-415.003
By: Lewis Thorp Richard Tilyard Ben Townsend Jennifer West
Due: November 15, 2001
"We have neither given nor received any unauthorized assistance on this project."
Abstract
Thi
North Carolina State University Mechanical and Aerospace Engineering Department MAE 415-003
Design Project 2: Drivetrain Design
Due: 11/15/01
We hereby pledge that we have neither given nor received any unauthorized assistance on this assignment.