changing property of material,parameter,add to parameter

[javidsharifi]

Dear all,

I have encounterd a question about some materials whose properties may change during dynamic analyses.
In case there is such a material property e.g. soil permeability, FRP tangential elasticity, etc, how should this command "update material stage" be used?

All the best,
Behtash

[brag006]

Have you read this?

http://opensees.berkeley.edu/wiki/index ... erialStage