Non-linear material model

[Ludwigswe]

Hello!

Is it possible to wright a program API that update the stiffnesmatrix due to stress-strain relationship for a material (Data from exprimental test)?

The idea is too make several iteration and for each iteration the stiffnes matrix is uppdated for nodes that exceeds a stress limit.

The analys proess is non-linear but each iteration is carried out as static.

This is just some ideas that i have to be abel to carrie out analysis for fiber reinforced concrete.

Regards

Ludwig

[Rafal.Gaweda · Accepted solution]

program API that update the stiffnesmatrix 

No

[Anonymous]

Rafal,

If it is possible to modify stiffness parameters, you could, theoretically, do an incremental analysis using the api to run sucessive increments. Of course, not onthe same model but rather regenerating the model and applying the load residual.

Been thinking about this for a while...