Steel01 or hysteretic

[laura83]

i follow your's advice to insert a Fu smaller than Fy.
but in the manual page 415 , is the contrary, why ?
if i insert fu smaller than fy the push over curve is rational.
can You explain me this?

[silvia]

please give me an on-line reference for page 415.
please talk to your advisor about the effect of reinforcing-steel behavior on your structure.

[laura83]

this is the example in getting going with Opensees




# reinforcing steel

set Fy [expr 68.*$ksi]; # STEEL yield stress
set Es [expr 29000.*$ksi]; # modulus of steel
set epsY [expr $Fy/$Es]; # steel yield strain
set Fu [expr 95.2*$ksi]; # ultimate stress of steel
set epsU 0.1; # ultimate strain of stell
set E2 [expr ($Fu-$Fy)/($epsU-$epsY)]; # post-yield tangent stiffness
set Bs [expr $E2/$Es]; # post-yield stiffness ratio of steel
# set up parameters for column section and element definition
set IDcore 1; # ID tag for core concrete
set IDcover 2; # ID tag for cover concrete
set IDsteel 3; # ID tag for steel
puts "All material variables have been defined"
uniaxialMaterial Concrete02 $IDcore $fc1C $eps1C $fc2C $eps2C $lambda $ftC $Ets; # CORE CONCRETE
uniaxialMaterial Concrete02 $IDcover $fc1U $eps1U $fc2U $eps2U $lambda $ftU $Ets; # COVER CONCRETE
uniaxialMaterial Steel01 $IDsteel $Fy $Es $Bs; # REINFORCING STEEL
puts "All materials have been defined

[silvia]

you have to decide what steel curve you want to use.
You really need to talk to someone about your model in general, please.