1. Not finding help here? Sign up for a free 30min 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!

Stress/Strain and Youngs Modulus

  1. Jan 10, 2017 #1
    1. The problem statement, all variables and given/known data
    1.JPG

    2. Relevant equations


    3. The attempt at a solution
    The shaded area is a triangle so the area of a triangle for this particular graph is this:

    0.5 (Stress)(Strain) which gives:

    0.5(F/A)(e/L) so the top would give work done and the bottom would give volume but we're still left with 0.5 in front of this so the answer should be A yet the answer is B? Why has the half disappeared?
     
  2. jcsd
  3. Jan 10, 2017 #2
    The work done is not F*e because F is not constant throughout the process. The work done is the integral of Fde, which for a Hookean process is 0.5Fe
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Stress/Strain and Youngs Modulus
  1. Stress and Strain (Replies: 1)

Loading...