Fit a Curve by Estimating UTS
An empirical formula can be used to estimate SN/EN data from ultimate tensile strength (UTS) and Young's modulus (E).
- From the Assign Material dialog, click the My Material tab and select your created material.
- Select Estimate from UTS as the input method.
-
Click
to view the model description.
- Enter a value for UTS and Elastic modulus.
- Click Estimate.
SN Properties

- SRI1SRI1
- Fatigue strength coefficient. It is the stress amplitude intercept of the SN curve at 1 cycle on a log-log scale.
- b1b1
- The first fatigue strength exponent. The slope of the first segment of the SN curve in log-log scale.
- Nc1Nc1
- b2b2
- The second fatigue strength exponent.



EN Properties

- Sf/σ′fSf/σ′f
- Fatigue strength coefficient.
- bb
- Fatigue strength exponent.
- cc
- Fatigue ductility exponent.
- Ef/ε′fEf/ε′f
- Fatigue ductility coefficient.
- Np/n′Np/n′
- Cyclic strain-hardening exponent.
- Kp/K′Kp/K′
- Cyclic strength coefficient.
- NcNc
- Reversal limit of endurance. One cycle contains two reversals.
- SEeSEe
- Standard Error of Log(N) from elastic strain.
- SEpSEp
- Standard Error of Log(N) from plastic strain.
