Finding Avg. True Stress for Annealed Copper

  • Thread starter Thread starter Jason03
  • Start date Start date
  • Tags Tags
    Average Stress
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 6K views
Jason03
Messages
161
Reaction score
0
Im working on a problem that I need to find the Average true stress...Im using a true stress curve for annealed copper...and I found the true stress in the unstrained condition to be 12,000 psi...and I found the true stress in the strained condition by using the equation:

strain = ln(l/l_o) which gave me .916...I than used the strain of 916 on the x-axis to find the true stress in the strained condition.(72,000 psi)...Im trying to remember how to find the average of the two values since I can't just add and divide by two since the graph is not a straight line...
 
Last edited:
Physics news on Phys.org
How would I find the area under the curve when I only have two points?