This command is used to construct a ReinforcingSteel uniaxial material object. This object is intended to be used in a reinforced concrete fiber section as the steel reinforcing material.
| uniaxialMaterial ReinforcingSteel $matTag $fy $fu $Es $Esh $esh $eult < -GABuck $lsr $beta $r $gama > < -DMBuck $lsr < $alpha >> < -CMFatigue $Cf $alpha $Cd > < -IsoHard <$a1 <$limit> > >
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| $matTag |
integer tag identifying material
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| $matTag |
unique material object integer tag
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| $fy |
Yield stress in tension (see Figure 1)
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| $fu |
Ultimate stress in tension
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| $Es |
Initial elastic tangent
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| $Esh |
Tangent at initial strain hardening
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| $esh |
Strain corresponding to initial strain hardening
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| $eult |
Strain at peak stress
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| -GABuck |
Buckling Model Based on Gomes and Appleton (1997)
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| $lsr |
Slenderness Ratio (see Figure 2)
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| $beta |
Amplification factor for the buckled stress strain curve. (see Figure 3)
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| $r |
Buckling reduction factor
- r can be a real number between [0.0 and 1.0]
- r=1.0 full reduction (no buckling)
- r=0.0 no reduction
- 0.0<r<1.0 linear interpolation between buckled and unbuckled curves
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| $gamma |
Buckling constant (see Figures 3 and 4)
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| -DMBuck |
Buckling model based on Dhakal and Maekawa (2002)
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| $alpha |
Adjustment Constant usually between 0.75 and 1.0
- Default: alpha=1.0, this parameter is optional.
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