Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculating maximum bending stress in an I beam?

  1. Nov 26, 2013 #1
    Hello all, I am confused on how to calculate the maximum bending stress in an I-beam.

    I found the maximum deflection in each beam where the load is placed at the center of the span.

    I also know all the cross-sectional dimensions of the I-beam.

    Is it now possible to calculate it?

  2. jcsd
  3. Nov 26, 2013 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    First of all, do you know the maximum bending moment on the beam? Do you know how to calculate bending stress?
  4. Dec 3, 2013 #3
    Maximum Bending Stress can be found using flexural formula (σ/y)= (M/I) where σ is bending stress, y is distance of outermost fibre from the Neutra axis, M is maximum Bending moment and I is the Moment of Inertia.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook