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The command line for ReinforcingSteel is as follows and is properly described in the previous sections and in the user command manual.
uniaxialMaterial ReinforcingSteel $IDReinforcingSteel $Fy$Fy1 $Es $Esh $epsSH $epsY1 <-CMFatigue $CfSrs $alphaSrs $CdSrs> <-GABuck $lsrSrs $betaSrs $rSrs $gammaSrs>
The different control arguments were investigated as follows:
Srs |
baseline |
Sra |
#### Coffin-Manson Fatigue and Strength Reduction set CfSrs 0.260; # Coffin-Manson constant C set alphaSrs 0.506; # Coffin-Manson constant a set CdSrs 0.389; # Cyclic strength reduction constant uniaxialMaterial ReinforcingSteel $IDReinforcingSteelXa $Fy $Fy1 $Es $Esh $epsSH $epsY1 -CMFatigue $CfSrs $alphaSrs $CdSrs |
Srb |
#### Buckling model based on Dhakal and Maekawa set lsrSrs 6; # Slenderness Ratio set betaSrs 1; # Amplification factor for the buckled stress strain curve. set rSrs 0.5; # Buckling reduction factor set gammaSrs 0.5; # Buckling constant uniaxialMaterial ReinforcingSteel $IDReinforcingSteelXb $Fy $Fy1 $Es $Esh $epsSH $epsY1 -GABuck $lsrSrs $betaSrs $rSrs $gammaSrs |
The backbone curve of each of these materials is shown in the following figures, tension in Figure 1, compression in Figure 2.
Figure 1. Backbone Curve for ReinforcingSteel Stress-Strain Relationship -- Tension
Figure 2. Backbone Curve for ReinforcingSteel Stress-Strain Relationship -- Compression
Srs |
ReinforcingSteel: baseline |
Sra |
ReinforcingSteel: -CMFatigue $CfSrs $alphaSrs $CdSrs |
Srb |
ReinforcingSteel: -GABuck $lsrSrs $betaSrs $rSrs $gammaSrs |
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