BuildingTcl -- addMaterial: MaterialmodelLabel ConfinedConcrete: Difference between revisions

Revision as of 21:17, 2 November 2009

Commands

addMaterialData MaterialLabel $MaterialLabel

addMaterialData MaterialModelLabel Steel

addMaterialData Fc $Fc

addMaterial

Arguments

$MaterialLabel: Unique Material Label for reference
$Fc: Nominal Compressive Strength
$MaterialDescription: Text. Optional, default = blank {}
$rFc: Ratio of actual/maximum compressive strength to nominal cmopressive strength -- confinement effect. Optional, default =
$fFu: Ratio of residual strength to maximum strength -- confinement effect. Optional, default = 0.8
$E: Elastic Modulus. Optional, default = 57000*$psi*(pow($rFc*$Fc/$psi); The resultant value will be in the basic Force/Length/Length units.
$epsU: Strain at residual strength. Optional, default = 0.040
$lambda: Ratio between unloading slope at epscu and initial slope. Optional, default = 0.1
$fT: Tensile strength. Optional, default = 0.1*$rFc*$Fc
$Ets: Tension softening stiffness (slope of the linear tension softening branch). Optional, default = $fT/0.002
$WeightDensity: Volumetric Weight Density of Material. Used to calculated section WeightDensity: sectionWeightDensity=$materialWeightDensity*SectionArea. Optional, default = 0.; NOT IMPLEMENTED IN CURRENT VERSION

Notes

The addMaterial command must be placed at the end of each Material-data definition, as it takes all data defined since the last addMaterial command and define the Material.

Options

OpenSees Object

This MaterialModel is based on the OpenSees Concrete02 Material -- Linear Tension Softening

BuildingTcl -- addMaterial

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@@ Line 5: / Line 5: @@
 :addMaterialData MaterialLabel $MaterialLabel
 :addMaterialData MaterialModelLabel Steel
-:addMaterialData Fc $Fc;   # nominal strength
+:addMaterialData Fc $Fc
 :<addMaterialData MaterialDescription $MaterialDescription >
-:<addMaterialData  $>
+:<addMaterialData rFc $rFc>
-:<addMaterialData  $>
+:<addMaterialData rFu $rFu>
-:<addMaterialData  $>
+:<addMaterialData E $E>
-:<addMaterialData  $>
+:<addMaterialData epsU $epsU>
-:<addMaterialData  $>
+:<addMaterialData lambda $lambda>
-:<addMaterialData  $>
+:<addMaterialData fT $fT>
-:<addMaterialData  $>
+:<addMaterialData Ets $Ets>
-:<addMaterialData  $>
-:<addMaterialData  $>
 :<addMaterialData WeightDensity $WeightDensity>
 :'''addMaterial'''
@@ Line 23: / Line 21: @@
 ;$MaterialLabel :	Unique Material Label for reference
-;$fY :	Elastic Modulus
+;$Fc:	Nominal Compressive Strength
 ;$MaterialDescription :	Text. Optional, default = blank {}
-;$E : Elastic Modulus. Optional, default = 29,000 ksi
+;$rFc : Ratio of actual/maximum compressive strength to nominal cmopressive strength -- confinement effect. Optional, default =
-;$Bsh : Strain-Hardening Ratio. Optional, default = 0.05  (5% hardening ratio)
+;$fFu : Ratio of residual strength to maximum strength -- confinement effect. Optional, default = 0.8
-;$f2 : Stress/Force value in second envelope point. Optional, default = 1.3*$fY
+;$E : Elastic Modulus. Optional, default = 57000*$psi*(pow($rFc*$Fc/$psi)
-;$f3 : Stress/Force value in third envelope point. Optional, default = 1.35*$fY
+:The resultant value will be in the basic Force/Length/Length units.
-;$eps3 : Strain/Deformation value in third envelope point. Optional, default = 1.0
+;$epsU : Strain at residual strength. Optional, default = 0.040
-;$pinchX : Pinching factor for strain (or deformation) during reloading. Optional, default = 1.
+;$lambda : Ratio between unloading slope at epscu and initial slope. Optional, default = 0.1
-;$pinchY : Pinching factor for stress (or force) during reloading. Optional, default = 1.
+;$fT : Tensile strength. Optional, default = 0.1*$rFc*$Fc
-;$damage1 : Damage due to ductility: D1(mu-1). Optional, default = 0.
+;$Ets : Tension softening stiffness (slope of the linear tension softening branch). Optional, default = $fT/0.002
-;$damage2 : Damage due to energy: D2(Eii/Eult). Optional, default = 0.
-;$beta : Power used to determine the degraded unloading stiffness based on ductility, mu^(-beta). Optional, default = 0.5
 ;$WeightDensity : Volumetric Weight Density of Material. Used to calculated section WeightDensity: sectionWeightDensity=$materialWeightDensity*SectionArea. Optional, default = 0.
 : NOT IMPLEMENTED IN CURRENT VERSION
@@ Line 48: / Line 44: @@
 == OpenSees Object ==
-This MaterialModel is based on the OpenSees [[Hysteretic Material]]
+This MaterialModel is based on the OpenSees [[Concrete02 Material -- Linear Tension Softening]]
 ----