ConfinedConcrete01

[Shankar]

Hello,

I'm trying to use ConfinedConcrete01 model for the modelling of RC frame. In that model I'm not sure what is the meaning of $stRatio. In the sample code the value is written as 0.85. But I couldn't find the description anywhere. It would be a great if anyone could please help me describing that parameter. Also the ductility factor $mu has been used as 1000 for the model. I don't understand the meaning of using ductility factor as 1000. Here is the model of confinedconcrete01.

#uniaxialMaterial ConfinedConcrete01 $tag $secType $fpc $Ec -epscu $epscu $nu $L1 $phis $S $fyh $Es0 $haRatio $mu $phiLon -stRatio $stRatio
uniaxialMaterial ConfinedConcrete01 1 S1 -30.0 26081.0 -epscu -0.03 -varub 300.0 10.0 100.0 300.0 206000.0 0.0 1000.0 16.0 -stRatio 0.85

Thanks
Shankar

[Phawe]

Hello Shankar,
I am also trying to use ConfinedConcrete01 now and I also wonder what the meaning of $stRatio and $mu is. If you know these two parameters now, would you share to me your knowledge?

Thanks
Phawe

[linguan118]

You'd better contact the developer, Brag, of this material. Or you may find them in his paper.