*****Last Ten Active Topic***


Amie TV question paper
1FATP8UH3K5159596 Ford Mustang 2019 Blue 2.3L
1FATP8UH3K5159596 Ford Mustang 2019 Blue 2.3L
previous year Question Paper OF COMPUTER NETWORKS WINTER 10
e-book of material science and engineering by kakani
Project Report
Free Download AMIE Section A study notes on AD 304
AMIE Section A Video tutorial on FDM AD-301
EXAM FOR SECTION A
C AND C++ PROGRAMMING TUTORIAL GUIDE

 

 

 

 

 

Registration Running on Online Classes for AMIE Summer 2018 Click Here to Register

THICK CYLINDER - A Revision Through Numerical Problem

Download excellent quality study note and ebooks of amie section b on Electronics and Mechanical Engineering in pdf,ppt,doc format

THICK CYLINDER - A Revision Through Numerical Problem

Postby RahulDas » Sun Sep 01, 2013 5:05 pm

PREREQUISITE
Knowledge of Lame’s equation for thick cylinder. And therefore variation of radial and hoop stress across the wall thickness.

NUMERICAL PROBLEM
In a hydraulic press, the cylinder has an internal diameter of 30cm. The cylinder has to withstand an internal pressure of 10 MPa without the material being stressed beyond 20 MPa. Determine the thickness of the metal.

LOGICAL APPROACH
  • We have the internal radius, ri and we are provided with value of inside pressure, which is nothing but radial stress, σr at the inner surface of cylinder.
  • We also have a maximum limiting pressure to which the cylinder material can be subjected, that is value of hoop stress, σθ at the inner surface.
  • Substituting value of σθ and σr in Lame’s equation: σθ = A + B/ r2; σr = A – B/ r2, we can get value of the constant A and B.
  • Using value of A and B, and solving for value of radial stress, σr at the outer surface of cylinder (which is equal to zero), we can calculate the outer radius, ro
  • And therefore the metal thickness, t = ro - ri.

ANSWER
Thickness = 10.981 cm
RahulDas
 
Posts: 2
Joined: Mon Aug 19, 2013 2:03 pm

Return to Mechanical Engineering

Who is online

Registered users: Bing [Bot]