Concrete02 material definition

[hibrhmdrn]

Does anyone have the reference document for Concrete02 material "Mohd Hisham Mohd Yassin, "Nonlinear Analysis of Prestressed Concrete Structures under Monotonic and Cycling Loads", PhD dissertation, University of California, Berkeley, 1994."

Can I define input values (uniaxialMaterial Concrete02 $matTag $fpc $epsc0 $fpcu $epsU $lambda $ft $Ets) according to a concrete model like Mander? In advanced examples manuel, some formulas are given. Should I use them after calculating "Kfc" using Mander model?

# confined concrete
set Kfc 1.3; # ratio of confined to unconfined concrete strength
set Kres 0.2; # ratio of residual/ultimate to maximum stress
set fc1C [expr $Kfc*$fc]; # CONFINED concrete (mander model), maximum stress
set eps1C [expr 2.*$fc1C/$Ec]; # strain at maximum stress
set fc2C [expr $Kres*$fc1C]; # ultimate stress
set eps2C [expr 20*$eps1C]; # strain at ultimate stress
set lambda 0.1; # ratio between unloading slope at $eps2 and initial slope $Ec

# unconfined concrete
set fc1U $fc; # UNCONFINED concrete (todeschini parabolic model), maximum stress
set eps1U -0.003; # strain at maximum strength of unconfined concrete
set fc2U [expr $Kres*$fc1U]; # ultimate stress
set eps2U -0.01; # strain at ultimate stress

# tensile-strength properties
set ftC [expr -0.14*$fc1C]; # tensile strength +tension
set ftU [expr -0.14*$fc1U]; # tensile strength +tension
set Ets [expr $ftU/0.002]; # tension softening stiffness

[selimgunay]

Yes you can compute the parameters of the Concrete02 material using Mander's model

[HolmesCheng]

Thank you!

[hoangytrt]

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