# Mohr's Circle and Failure Criterion for Planar Stress States

Mohr's Circle and Failure Criterion for Planar Stress States

This Demonstration calculates the principal stresses and direction angle for a differential element and shows the following:

• the stresses for a selected angle of rotation, including the von Mises stress

• the element and its associated angles

• the corresponding Mohr's circle

• the safety factor of the element when material properties are introduced

• the "safety zone" for ductile and brittle materials