engineering fundamentals Discussion Forum
Directory | Career | News | Standards | Industrial | SpecSearch®
Home Membership Magazines Forum Search Member Calculators

Materials

Design

Processes

Units

Formulas

Math
List Recent Topics | Start a New Topic
 

<< Previous Message No. 14772 Next >>
Author: gerdb
Time: 10/19/04 15:42 PST
This is a reply to message no. 14768 by samingale
Reply | Original Message | New Topic | List Topics | List Messages on This Topic
Current Topic:
Why loosening torque is lesser than the tightening torque for bolts/screws
the mathematical answer would have to lie along those lines:

while tightening, you are working against increasign resistance

while losening, you are working against decreasing resistance, one you are over the hump, bingo your screw is lose.

the same hump in footpounds while tightening doesn't yield any observable results (free movement) as it runs against drastically increasing resistance.


Now, who has the math for this ?












[ List Replies to This Message Only ]

Home  Membership  About Us  Privacy  Disclaimer  Contact  Advertise

Copyright © 2017 eFunda, Inc.