Von Mises Yield Criterion

σ

1

(MPa)

0

σ

2

(MPa)

0

uniaxial yield strength (MPa)

100

In a plane stress condition (i.e., one of the principal stresses is zero), the von Mises yield criterion can be plotted as a function of the other two principal stresses. For stress states where the von Mises equivalent stress is less than the yield strength (points that lie inside of the ellipse), plastic deformation will not occur. For stress states where the von Mises equivalent stress is greater than the yield strength (points which lie outside of the ellipse), plastic deformation will occur.

Details

Snapshot 1: no applied stress

Snapshot 2: a stress state that would lead to yield and plastic deformation

Snapshot 3: a stress state that would not lead to yield or plastic deformation

External Links

Analysis of Stress (Wolfram Documentation Center)

Permanent Citation

Megan Frary

"Von Mises Yield Criterion"
http://demonstrations.wolfram.com/VonMisesYieldCriterion/
Wolfram Demonstrations Project
Published: January 24, 2008