Failure theories are used to predict when a material will fail due to static loading. They do this by comparing the stress state at a point with material properties that can be easily determined from testing, like the yield or ultimate strengths of the material determined from a uniaxial test.

In this video I cover some of the main theories for ductile and for brittle materials Rankine (maximum principal stress theory), Tresca (maximum shear stress theory), von Mises (maximum distortion energy theory) as well as the CoulombMohr and Modified Mohr theories.



If you would like to support the channel, please consider becoming a Patron   / efficientengineer  . This will allow me to create more high quality videos covering a range of engineering topics.



The Efficient Engineer is a channel aimed at mechanical and civil engineers. The mission is to simplify engineering concepts, one video at a time!

Follow me on Twitter:   / efficiengineer