Other Methods for Fitting a Curve

The following methods require certain parameters other than UTS to define the SN/EN curve.

  1. From the Assign Material dialog, click the My Material tab and select your created material.
  2. For Number of SN curves, select Single.
  3. For Curve Type, select Ratio/ Haigh Diagram.
  4. Select an input method.
  5. Click to view the model description.
  6. Define any necessary parameters.
    Note: The images below use the default values as a guideline.

SN Properties



Figure 1. Point, 1-seg


Figure 2.


Figure 3. Point, 2-seg


Figure 4.


Figure 5. Slope-intcept, 1-seg
Figure 6.




Figure 7. Slope-intcept, 2-seg


Figure 8.


Figure 9. Slope-trans, 1-seg


Figure 10.


Figure 11. Slope-trans, 2-seg


Figure 12.

SN Properties in XY Format



Figure 13. XY Data SN Curve


Figure 14. Format of SN Curve in XY Data

Single Haigh Diagram



Figure 15. Single Haigh Diagram


Figure 16. Format of Haigh Diagram CSV

EN Properties



Figure 17. Slope


Figure 18.