- #1
stevo1978
- 10
- 0
Homework Statement
Hi there if you have something that has 3 principle stresses on it, 200MPa and 50MPa and one is a compressive stress, what is the largest value of compressive stress using the tresca theory when the yield stress is 300MPa?
Many thanks
Homework Equations
The Attempt at a Solution
s1-s3=syield
so 200-s3=300
or s3=-100MPa
but max shear, t=(s1-s3)/2
so t=(200+100)/2=300/2=150MPa
I think i have done something wrong as i need a compressive stress which would be a negative answer