Ansys Doubts

Perhaps a little destructive testing is needed....

Hi SolarEagle,

Thanks for reply.But could you please clarify my doubts regarding the 3 questions i have posted.

"Maximum Principle Stress Theory - According to this theory failure will occur when the maximum principal stress in a system reaches the value of the maximum stress at elastic limit in simple tension. This theory is approximately correct for cast iron and brittle materials generally."

Source:

http://www.roymech.co.uk/Useful_Tables/Mechanics/stress.html

"Von Mises Stress (Distortion Energy Theory) - This theory proposes that the total strain energy can be separated into two components: the volumetric (hydrostatic) strain energy and the shape (distortion or shear) strain energy. It is proposed that yield occurs when the distortion component exceeds that at the yield point for a simple tensile test."

Source:

http://en.wikipedia.org/wiki/Yield_(engineering)

More information on Von Mises Stress can be found here.

General information on solid mechanics can be found here.

Reference

https://www.physicsforums.com/threads/vonmises-stress-vs-maximum-principle-stress.206854/

Thank You