Calculating von mises in beam element

[aleks1409979]

Can anyone help me how to calculate von mises stresses in beam elements ( i/m using beam188 in ansys) ? maybe some books or links where i can find ?

von Mises stress = (0.5*((s1-s2)^2+(s2-s3)^2+(s3-s1)^2))^0.5 according to definition, becouse s2 and s3 are 0 von miss=s1=sx is it correct?

regards

 

[mcclane]

Hello,
for getting von mises stress, you can make /esh,1 and plns,s,eqv command to display vom mises stress.

The formula that you are talking abou allow to calculate Von Mises Stress by using principal stress so you don't take into account shear stress. It depends of your load in the structure.

But you can use another definition without principal stress, you can find this result on the web. Google is your friend.