| EPSX |
X Normal strain |
| EPSY |
Y Normal strain |
| EPSZ |
Z Normal strain |
| GMXY |
Shear strain in Y direction on YZ plane |
| GMXZ |
Shear strain in Z direction on YZ plane |
| GMYZ |
Shear strain in Z direction on XZ plane |
| ESTRN |
Equivalent strain |
| SEDENS |
Strain energy density |
| ENERGY |
Total strain energy |
| E1 |
Normal strain in the first principal direction |
| E2 |
Normal strain in the second principal direction |
| E3 |
Normal strain in the third principal direction |
Equivalent strain (ESTRN) is defined as:
ESTRN=2 [(ε1+ε2)/3](1/2)
Where:
ε1 = 0.5 [(EPSX - ε*)2 + (EPSY - ε*)2 + (EPSZ - ε*)2]
ε2 = [(GMXY)2 + (GMXZ)2 + (GMYZ)2] / 4
ε* = (EPSX + EPSY + EPSZ) / 3