About the External Fatigue Material File

The external fatigue material file is a text file with a .mat extension. It defines additional material properties for a fatigue analysis. Set the sim_fatigue_external_matadata configuration option to yes, to specify an external fatigue material file for a fatigue analysis. You can define multiple external material files for a single fatigue analysis. The names of the material files must match the material names that you assigned to your model.

Keyword	Property	Range Of Values
UTS	ultimate tensile strength*	100 to 4000 MPa
YOUNG_MODULUS	elastic modulus*	20000 to 300000 MPa
YS	yield strength*	50 to 3000 MPa
ME	elastic poisson’s ratio	0.25 to 0.35
MP	plastic poisson’s ratio	0.45 to 0.55
SF_PRIME	fatigue strength coefficient*	50 to 4000 MPa
B	fatigue strength exponent	-10.0 to -0.002
EF_PRIME	fatigue ductility coefficient	0.001 to 10.0
C	fatigue ductility exponent	-1.2 to -0.15
N_PRIME	cyclic strain hardening exponent	0.005 to 0.5
K_PRIME	cyclic strength coefficient*	50 to 12000 MPa
RC	cut-off cycles	1.0E5 to 1.0E25
SEE	standard error of log(e) (elastic)	0.0 to 10.0
SEP	standard error of log(e) (plastic)	0.0 to 10.0
SEC	standard error of log(e) (cyclic)	0.0 to 10.0