Before revision: In continuum mechanics, the maximum distortion criterion (also von Mises yield criterion) states that yielding of a ductile material begins when the second invariant of deviatoric stress reaches a critical value.
After revision: energyIn continuum mechanics, the maximum distortion criterion (also von Mises yield criterion) states that yielding of a ductile material begins when the second invariant of deviatoric stress reaches a critical value.