![]() NX Nastran will interpret this curve as engineering stress (true stress-strain is not supported in SOL 106). In Femap, this curve should be defined as 4. from when the data set limits at 0.02 Strain onwards. Instead of work hardening slope H, you have to define a curve showing a multi-linear relation between stress and strain. I need true stress and strain data for the data when the extensometer is removed to the end point- i.e. I do however have UTS and break off point information, load, original specimen area and % area reduction, initial and end length of test sample. This therefore results in the tensile strain data going up to 2% strain then no further data is available for the remaining extent of the curve - so no information on the 2% to 100% strain ,or to break off point. The tensile strain data only goes up to 2% strain due to limitations of the extensometer. The strain output depends on the material model and the choice of small or large strain formulation. I am however looking for True Stress/Strain values to input in to ANSYS. True Stress, Engineering Strain: N/A: After the analysis completes, the stress output is the Cauchy stress, which is the true stress in the deformed geometry. ![]() These are Engineering Stress/Strain values provided by our testing house (raw data). I have Tensile Strain (mm/mm) data and Tensile Stress (MPa) data. I have a set of mechanical tensile test data in which I wish build material models in ANSYS. ![]()
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