- #1
donniemateno
- 45
- 0
I have been given these questions as homework and completed them , but you enter them on our online homework system to check if they are correct. It doesn't say which one is wrong though and its frustrating as I don't know where I have gone wrong! I know I have one right as it does say 1/2 is correct :)
the question is :
A component is made of mild steel with yield stress 240MPa. The state of stress is
pure shear τ =50MPa at a point on the component
Calculate factor of safety by Tresca failure theory
Calculate factor of safety by von Mises failure theory
I have attached relevant formulas as a attachment
My working out so far is part 1:
Tresca = 240MPa / 50 = 4.8
Part 2:
von Mises :
q1=50 q2= 0 q3=-50
√0.5((50-0)^2+(0--50)^2+(0-50)^2)) = 61.24
240 / 61.24 = 3.92
the question is :
A component is made of mild steel with yield stress 240MPa. The state of stress is
pure shear τ =50MPa at a point on the component
Calculate factor of safety by Tresca failure theory
Calculate factor of safety by von Mises failure theory
I have attached relevant formulas as a attachment
My working out so far is part 1:
Tresca = 240MPa / 50 = 4.8
Part 2:
von Mises :
q1=50 q2= 0 q3=-50
√0.5((50-0)^2+(0--50)^2+(0-50)^2)) = 61.24
240 / 61.24 = 3.92