I-DEAS True Stress-Strain Data
I-DEAS True Stress-Strain Data
(OP)
Hello -
Way back on 7Jan04 in (thread727-83231: stress is greater than yield but plastic strain is zero?), feadude wrote,
"IDEAS uses engineering stress/strain data for material nonlinear and true stress/strain data for geometric nonlinear."
Could feadude or someone please point me to where I can find that information? I haven't seen it in the I-DEA Help files.
Also, assuming the statement is correct, does it mean that for material nonlinear analyses I-DEAS wants data of engineering stress vs. engineering strain? And for geometric nonlinear analysis, I-DEAS wants data of true stress vs. true strain? I ask this because sometimes "true" curves are actually true stress vs. engineering strain.
Finally, what stress-strain data does I-DEAS want when an analysis is both geometric nonlinear and material nonlinear?
Thank you in advance for your replies!
Way back on 7Jan04 in (thread727-83231: stress is greater than yield but plastic strain is zero?), feadude wrote,
"IDEAS uses engineering stress/strain data for material nonlinear and true stress/strain data for geometric nonlinear."
Could feadude or someone please point me to where I can find that information? I haven't seen it in the I-DEA Help files.
Also, assuming the statement is correct, does it mean that for material nonlinear analyses I-DEAS wants data of engineering stress vs. engineering strain? And for geometric nonlinear analysis, I-DEAS wants data of true stress vs. true strain? I ask this because sometimes "true" curves are actually true stress vs. engineering strain.
Finally, what stress-strain data does I-DEAS want when an analysis is both geometric nonlinear and material nonlinear?
Thank you in advance for your replies!





RE: I-DEAS True Stress-Strain Data
RE: I-DEAS True Stress-Strain Data
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Greg Locock
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RE: I-DEAS True Stress-Strain Data