I have tensile test result of a material at different temperatures - elongation vs stress. From these results, how can I calculate effective plastic strain for flow curves?
I cannot evaluate, how the results are affected, because I don't know missing parts of the flow curve and the model. However let's describe, what is used as material data in yoour model. If plastic strain > 0.12 occurs in the model, the flow stress at 0.12 plastic strain is used for the calculation.
Thats why I would recommend to use the maximum plastic strain at all temperatures as end point of all flow curves, in your example 0.2 plastic strain at 500° C to be able to include the complete flow curve and fill flow curve interval between 0.12 and 0.2 for 25°C with a constant plastic strain matching the value at 0.12. During postprocessing you should then check, when and at which temperature plastic strain values >0.12 are reached. If you have any follow up questions you can also reach out to me and my colleges at support@simufact.de .
I cannot evaluate, how the results are affected, because I don't know missing parts of the flow curve and the model. However let's describe, what is used as material data in yoour model. If plastic strain > 0.12 occurs in the model, the flow stress at 0.12 plastic strain is used for the calculation.
Thats why I would recommend to use the maximum plastic strain at all temperatures as end point of all flow curves, in your example 0.2 plastic strain at 500° C to be able to include the complete flow curve and fill flow curve interval between 0.12 and 0.2 for 25°C with a constant plastic strain matching the value at 0.12. During postprocessing you should then check, when and at which temperature plastic strain values >0.12 are reached. If you have any follow up questions you can also reach out to me and my colleges at support@simufact.de .
