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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?

In the info sheets, no information is given. Please, let me know how can calculate effective plastic strain.
Parents
  • The key in calculating the effective plastic strain is finding the yield stress and the matching strain. Based on your question I am assuming that a graudual rise of non-linear behaviour is occuring. Let's go to all steps:
    1. Interpolate your tensile test results
    2. calculate the yield stress and strain. There are some videos on youtube, how to do this like https://www.youtube.com/watch?v=tomrYl_QMS4
    3. calculate the true stresses and strains (see the mentioned infosheet )
    4. subtract the true strain occuring at the yield point from your strain results. This should be your plastic strain.
     
Reply
  • The key in calculating the effective plastic strain is finding the yield stress and the matching strain. Based on your question I am assuming that a graudual rise of non-linear behaviour is occuring. Let's go to all steps:
    1. Interpolate your tensile test results
    2. calculate the yield stress and strain. There are some videos on youtube, how to do this like https://www.youtube.com/watch?v=tomrYl_QMS4
    3. calculate the true stresses and strains (see the mentioned infosheet )
    4. subtract the true strain occuring at the yield point from your strain results. This should be your plastic strain.
     
Children
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