1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Von Mises Stress Calculation for Internally Pressurized Pipe

  1. May 25, 2013 #1
    Problem Description:
    Internally pressurised pipe elbow with open ends.

    I have to compare the Finite Element Von Mises stress with that calculated by hand.

    I am having issues calculating this.

    The formulae that I am using are:

    Hoop Stress: σ_1 = \frac{P*d}{2*h}
    Where: P is pressure; d is mean diameter; h is thickness of pipe

    Radial Stress: σ_2 = \frac{-P*(r_i)^2*((r_o)^2-(r)^2)}{(r)^2((r_o)^2-(r_i)^2)
    Where: P is pressure; r_i is inner radius; r_o is outer radius; r is radius of curvature

    Von Mises Stress: σ_Y = \sqrt{\frac{1}{2}*[σ_1^2_σ_1*σ_2+σ_2^2]}
    Note: neglecting σ_3

    Could someone please point me in the right direction with this problem? I am not sure if I should be including axial stress in calculating the Von Mises Stress..
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted