In general, for ELS (Service Limit States), average values of materials and service actions are adopted. For ELU (Ultimate Limit State), 5% percentiles are adopted in material parameters, reduced by a coefficient of 1.5 and the actions are increas…
It seems like a reasonable fit, but it is a perfect elastoplastic model. When concrete cracks, it stops supporting traction and transmits it to the steel. It would be necessary to have a specific model for concrete.
Has anyone done checks with the results of any material from the MFRONT library? Testing with the Druker Prager model, the results do not seem reliable.
Although the program appears to calculate with the MFRONT models, the results do not seem consistent. It would be necessary to analyze them well with simple cases.