Reply To: Simulation of a Tensile Test to validate material properties

[Armin]

Hi Henrique,

No worries, I'm glad to help. Please keep us posted on how the project goes once you re-visited it. Here are my responses to your questions:

Q1: Given that the material experiences a uniaxial loading until necking (the stress state deviates from uniaxial tension after necking), your analysis should be valid until necking provided that the general setup like BCs, etc. have been implemented correctly.  

Q2: That's right. You should only use the experimental data from yield point until necking and let the fitted function predict stresses at larger strains. You may then use the resulting curve in the simulation to see how closely you can reproduce the post-necking regime, and if necessary, adjust the curve accordingly. This approach is sometimes called an “inverse-analysis” to extract the stress-strain response.