Stress Density Material: Difference between revisions
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(Created page with '{{CommandManualMenu}} This command is used to construct a multi-dimensional stress density material object for modeling sand behaviour following the work of Cubrinovski and Ishi...') |
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| style="background:yellow; color:black; width:800px" | '''nDMaterial StressDensity $matTag $mDen $eNot $A $m $nu $a1 $b1 $a2 $b2 $a3 $b3 $fd $muNot $muCyc $sc $M $patm <>''' | | style="background:yellow; color:black; width:800px" | '''nDMaterial StressDensity $matTag $mDen $eNot $A $m $nu $a1 $b1 $a2 $b2 $a3 $b3 $fd $muNot $muCyc $sc $M $patm <$ssl1 $ssl2 $ssl3 $ssl4 $ssl5 $ssl6 $ssl7 $ssl8 $ssl9 $ssl10 $hsl $p1 $p2 $p3 $p4 $p5 $p6 $p7 $p8 $p9 $p10>''' | ||
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| '''$nu ''' || Poisson's ratio | | '''$nu ''' || Poisson's ratio | ||
|- | |- | ||
| '''$a1 ''' || | | '''$a1 ''' || peak stress ratio coefficient (etaMax = a1 + b1*Is) | ||
|- | |- | ||
| '''$b1 ''' || | | '''$b1 ''' || peak stress ratio coefficient (etaMax = a1 + b1*Is) | ||
|- | |- | ||
| '''$ | | '''$a2 ''' || max shear modulus coefficient (Gn_max = a2 + b2*Is) | ||
|- | |- | ||
| '''$ | | '''$b2 ''' || max shear modulus coefficient (Gn_max = a2 + b2*Is) | ||
|- | |- | ||
| '''$ | | '''$a3 ''' || min shear modulus coefficient (Gn_min = a3 + b3*Is) | ||
|- | |- | ||
| '''$ | | '''$b3 ''' || min shear modulus coefficient (Gn_min = a3 + b3*Is) | ||
|- | |- | ||
| '''$M ''' || | | '''$fd ''' || degradation constant | ||
|- | |||
| '''$muNot ''' || dilatancy coefficient (monotonic loading) | |||
|- | |||
| '''$muCyc ''' || dilatancy coefficient (cyclic loading) | |||
|- | |||
| '''$sc ''' || dilatancy strain | |||
|- | |||
| '''$M ''' || critical state stress ratio | |||
|- | |- | ||
| '''$patm ''' || atmospheric pressure (in appropriate units) | | '''$patm ''' || atmospheric pressure (in appropriate units) | ||
|- | |||
| '''$ssl1 ''' || void ratio of quasi steady state (QSS-line) at pressure $p1 | |||
|} | |} | ||
Revision as of 00:01, 28 July 2016
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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 $patm <$ssl1 $ssl2 $ssl3 $ssl4 $ssl5 $ssl6 $ssl7 $ssl8 $ssl9 $ssl10 $hsl $p1 $p2 $p3 $p4 $p5 $p6 $p7 $p8 $p9 $p10> |
| $matTag | integer tag identifying material |
| $mDen | mass density |
| $eNot | initial void ratio |
| $A | initial bulk modulus |
| $m | overconsolidation ratio |
| $nu | Poisson's ratio |
| $a1 | peak stress ratio coefficient (etaMax = a1 + b1*Is) |
| $b1 | peak stress ratio coefficient (etaMax = a1 + b1*Is) |
| $a2 | max shear modulus coefficient (Gn_max = a2 + b2*Is) |
| $b2 | max shear modulus coefficient (Gn_max = a2 + b2*Is) |
| $a3 | min shear modulus coefficient (Gn_min = a3 + b3*Is) |
| $b3 | min shear modulus coefficient (Gn_min = a3 + b3*Is) |
| $fd | degradation constant |
| $muNot | dilatancy coefficient (monotonic loading) |
| $muCyc | dilatancy coefficient (cyclic loading) |
| $sc | dilatancy strain |
| $M | critical state stress ratio |
| $patm | atmospheric pressure (in appropriate units) |
| $ssl1 | void ratio of quasi steady state (QSS-line) at pressure $p1 |
The material formulations for the StressDensity object are "ThreeDimensional" and "PlaneStrain"
Code Developed by Saumyashuchi Das, University of Canterbury. Maintained by Chris McGann
General Information
This nDMaterial object provides the