Seismosoft | Earthquake Engineering Solutions

In the definition of the mander stress-strain model for concrete, How can I modify the parameters for nonconfined concrete? for example: ultimate strain (eu), ultimate concrete stress (fcu).

In the definition of stress-strain model for reinforced steel, is it posible to introduce a Kent-Park or mander 1984

In the case of infill panel, Is it possible that they carry loads from structure

Dear wfperezg,

The values for the concrete material models inserted in the Materials module are basically for the unconfined concrete. Whether the concrete is confined or unconfined is taken into consideration within the section's module, where you can define the transverse reinforcement, and the confinement factor is automatically calculated or can be further modified.

You may find posts in the forum about the Kent-Scott-Park concrete model. The Mander et al. nonlinear concrete model - con_ma is available in SeismoStruct, relative information is available in the SeismoStruct User Manual and Help System.

Finally, as you may read in the SeismoStruct's Help System for the inelastic infill panel element: "Each panel is represented by six strut members; each diagonal direction features two parallel struts to carry axial loads across two opposite diagonal corners and a third one to carry the shear from the top to the bottom of the panel. This latter strut only acts across the diagonal that is on compression, hence its "activation" depends on the deformation of the panel."