State parameters

Pure shear

Uniaxial tension

Plane strain

Biaxial bulge

Strain ratio α

−1

−0.5

0

1

Triaxiality η

0

$\frac{1}{3}$

$\frac{1}{\sqrt{3}}$

$\frac{2}{3}$

Lode angle parameter $\overline{\theta }$

0

1

0

−1