Stress Density Material

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This command is used to construct a multi-dimensional stress density material object for modeling sand behaviour following the work of Cubrinovski and Ishihara (1998a,b).

nDMaterial StressDensity $matTag $mDen $eNot $A $m $nu $a1 $b1 $a2 $b2 $a3 $b3 $fd $muNot $muCyc $sc $M $patm <>

$matTag	integer tag identifying material
$mDen	mass density
$eNot	initial void ratio
$A	initial bulk modulus
$m	overconsolidation ratio
$nu	Poisson's ratio
$a1
$b1
$fd
$muNot
$muCyc
$sc
$M
$patm	atmospheric pressure (in appropriate units)

The material formulations for the StressDensity object are "ThreeDimensional" and "PlaneStrain"

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Code Developed by Saumyashuchi Das, University of Canterbury. Maintained by Chris McGann

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General Information

This nDMaterial object provides the