Homework1_brg_solnF07

Homework1_brg_solnF07 - slope 0.0019099 load/m 52949.366...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
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. Use the flat bearing model and assume no side flow. Si viscosity 2.20E-02 Pa s 65C speed 3000 rpm radius 25 mm h1 0.1 mm h2 0.025 mm L 39.269908 25%,mm Length 55 mm surf speed 7.8539816 m/s
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: slope 0.0019099 load/m 52949.366 N/m load 2912.2151 N drag/m-175.9829 N/m drag-9.679058 N torque-0.241976 N m ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + − + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − = ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + − − ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ = 2 1 2 1 2 1 2 1 2 1 2 1 2 3 ln 2 2 / 2 ln 6 / h h h h h h U width Drag h h h h h h U width Load α µ...
View Full Document

This note was uploaded on 03/10/2009 for the course MAE 415 taught by Professor Eischen during the Spring '07 term at N.C. State.

Ask a homework question - tutors are online