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I need to model a confined concrete using concrete07 code http://opensees.berkeley.edu/OpenSees/manuals/usermanual/4055.htm i am going to model in SI units For defining fcc we need some parameters like A and B and x' ... and i cant understand about fl1 and fl2.what this parameters means? and i need ...

i need an example of this code,i mean "concrete07" in (Mpa) if any one try it and it works correct

is it necessary that the unit we define in the uniaxialMaterial BarSlip code similar to the codes we wrote before?

how can we modify this code for 3d cases?could you please explain it more?

can we use rotspring2D codes for 3D cases???

hi
how can i model the column and beams joint with springs?(3D)
how can i assign the springs to the joints?

the column i want model it has a coverplate around it and the beams connected to the column through it,do you know how can i model the coverplate?

Hi
I am trying to simulate a three-dimensional RC column to steel beam(RCS) connection of a lateral column that has 3 beams and I have problem in it,could you please help me?