Reinforcing Steel Material: Difference between revisions

From OpenSeesWiki
Jump to navigation Jump to search
No edit summary
No edit summary
Line 27: Line 27:
  |-
  |-
|  '''$beta''' || Amplification factor for the buckled stress strain curve. (see Figure 3)
|  '''$beta''' || Amplification factor for the buckled stress strain curve. (see Figure 3)
  |-
  |-valign:top
|  '''$r''' ||Buckling reduction factor
|  '''$r''' ||Buckling reduction factor



Revision as of 05:24, 7 December 2009

uniaxialMaterial ReinforcingSteel $matTag $fy $fu $Es $Esh $esh $eult < -GABuck $lsr $beta $r $gama > < -DMBuck $lsr < $alpha >> < -CMFatigue $Cf $alpha $Cd > < -IsoHard <$a1 <$limit> > >

- ----

$matTag integer tag identifying material
$matTag unique material object integer tag
$fy Yield stress in tension (see Figure 1)
$fu Ultimate stress in tension
$Es Initial elastic tangent
$Esh Tangent at initial strain hardening
$esh Strain corresponding to initial strain hardening
$eult Strain at peak stress
-GABuck Buckling Model Based on Gomes and Appleton (1997)
$lsr Slenderness Ratio (see Figure 2)
$beta Amplification factor for the buckled stress strain curve. (see Figure 3)
$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

$gamma Buckling constant (see Figures 3 and 4)