BuildingTcl -- addMaterial: MaterialmodelLabel ConfinedConcrete: Difference between revisions

Latest revision as of 21:33, 2 November 2009

Commands

addMaterialData MaterialLabel $MaterialLabel

addMaterialData MaterialModelLabel ConfinedConcrete

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 = 1.3
$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. This material is essentially the same as the UnconfinedConcrete material, with different default values for maximum-to-nominal and residual-to-nominal strength ratios.

Options

OpenSees Object

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

BuildingTcl -- addMaterial

Return to BuildingTcl Command Language Manual

@@ Line 4: / Line 4: @@
 :addMaterialData MaterialLabel $MaterialLabel
-:addMaterialData MaterialModelLabel Steel
+:addMaterialData MaterialModelLabel ConfinedConcrete
-: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
+;$rFc : Ratio of actual/maximum compressive strength to nominal cmopressive strength -- confinement effect. Optional, default = '''1.3'''
-;$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 42: / Line 38: @@
 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.
+This material is essentially the same as the UnconfinedConcrete material, with different default values for maximum-to-nominal and residual-to-nominal strength ratios.
@@ 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]]
 ----