My Math Forum  

Go Back   My Math Forum > Science Forums > Physics

Physics Physics Forum

LinkBack Thread Tools Display Modes
November 11th, 2011, 10:43 AM   #1
Senior Member
Joined: Feb 2011

Posts: 150
Thanks: 0

Stress compound cylinder problem

Hi guys.

I am half way through my 2nd year of a Mechanical engineering degree, we have just started compound cylinders, I am tryin to get my head around it by doing examples, but I cannot find a similar example to what I need. I have just got an assignment with one calculation, which Ive have attempted, see attatched picture for my working however I think I may have gone wrong somewhere as i came out with a negative maximum stress. If someone could point out where the mistake is that would be great. The question states:

A tube 40mm inside and 60mm outside dia is to be reinforced by shrinking on a tube of 80mm outside diameter. The compound tube is subjected to an internal pressure of 50MPa and the shrinkage allowance is such that the final maximum stress in each tube is the same. Determine the maximum stress and the difference in tube diameter before shrinkage. E=207000 N/mm^2

Thanks for your time


jakeward123 is offline  
November 12th, 2011, 07:12 AM   #2
Senior Member
Joined: Feb 2011

Posts: 150
Thanks: 0

Re: Stress compound cylinder problem

I have just worked the calculation again and got A=16666687.5 and B=26666.7 and subbing into lames eqautuon for hoop stress in and out

??in= 83.3MPa

??out= 33.3MPa

this seems a more realistic answer, showing max stress is in the inside of the cylinder. ???
jakeward123 is offline  

  My Math Forum > Science Forums > Physics

compound, cylinder, problem, stress

Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Issue with "stress" problem Girn Physics 2 October 12th, 2012 12:14 AM
Equilateral cylinder problem. Given radius, find... gdirect Algebra 3 December 11th, 2011 08:59 AM
Right Circular Cylinder problem... mikjel Algebra 1 January 10th, 2010 06:19 AM
Right cylinder problem flophouse Algebra 1 December 4th, 2008 04:02 PM
Issue with "stress" problem Girn Algebra 0 December 31st, 1969 04:00 PM

Copyright © 2019 My Math Forum. All rights reserved.