peteroznewman
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I spent some more time converting Engineering Stress and Strain to True Stress and Plastic Strain. Last week, I used a YouTube video from an Abaqus user.  Today I watched the Ansys How To video on Metal Plasticity. https://courses.ansys.com/index.php/courses/topics-in-metal-plasticity/

As I revised my spreadsheet, I found a mistake. When I did the copy/paste of the stress from column E to column G, I didn’t paste the values, but the formulas, so I got the wrong numbers in that column! You will want to revise the values in your model if you copied this mistake.