Material Models nDMaterial PressureIndependentMultiYield NDMaterial PressureDependMultiYield02 $matTag $nd $rho $refBulkModul $frictionAng $peakShearStra $refPress $pressDepenCoe $PTAng $contrac1 $contrac3 $dilat1 $dilat3 $contrac2=5.0 $dilat2=3.0 $liquefac1=1.0 $liquefac2=0.0 $e=0.6 $cs1=0.9 $cs2=0.02 $cs3=0.7 $pa=101> Material Models nDMaterial PressureDependentMultiYield02 Material Models nDMaterial PressureDependentMultiYield NDMaterial PressureDependMultiYield $matTag $nd $rho $refShearModul $refBulkModul $frictionAng $peakShearStra $refPress $pressDependCoe $PTAng $contrac $dilat1 $dilat2, $liquefac1 $liquefac2 $liquefac3 $e=0.6 $cs1=0.9 $cs2=0.02 $cs3=0.7 $pa=101> Material Models – nDMaterial PressureDependentMultiYield Pressure Dependent Multi-yield (captures well the response of liquefiable soils) Pressure Independent Multi-yield (for total stress analysis) Material models based on Multiyield Plasticity (Mroz et al., Prevost et al.) Material Models nDMaterial MultiYield Materials NDMaterial J2Plasticity $matTag $K $G $sig0 $sigInf $delta $H Material Models nDMaterial - J2Plasticity Material Models nDMaterial -Elasto-Plastic (Small Deformations) NDMaterial ElasticIsotropic $matTag $E $v To characterize the interface response between soil and structural elements (uniaxialMaterial). To characterize the nonlinear stress-strain response of soils
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Elasto-Plastic Material models (nDMaterial) To characterize the response of the soil (or other continuum) in its elastic regime
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Linear Elastic Material model (nDMaterial) Connects two points at the same coordinateĮlement zeroLength $eleTag $n1 $n2 –mat $matTag1 $matTag2 … -dir $dir1 $dir2 …
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UP - Stabilized Single Point 2D and 3D Solid Elements Stabilized Single Point 2D and 3D Solid Elements Fully coupled u-p-U elements (3D) for small deformationsĮlement quadUP $eleTag $n1 $n2 $n3 $n4 $thick $type $matTag $bulk $fmass $hPerm $vPerm $bulk combined undrained bulk modulus Bc=Bf/n $fmass fluid mass density $hperm & $vperm horiz. Must define first all the required arguments. To capture interface response between solid and beam elements, and to apply absorbent boundary conditionsĮlement quad $eleTag $n1 $n2 $n3 $n4 $thick $type $matTag To capture the response of saturated soils (effective stress analysis) need two phases To capture the response of dry soils (or total stress analysis) need one single phase
#3d earthquake loading opensees how to#
Everything else you are learning in this workshop (i.e., how to create beam elements, apply loads and boundary conditions, record results, perform the analysis, etc. Interface elements to capture the interaction between the soil and adjacent structures. Robust constitutive models to characterize the soil stress-strain response under monotonic and cyclic loading conditions Appropriate boundary conditions to accurately represent the soil domain boundaries.
![3d earthquake loading opensees 3d earthquake loading opensees](https://openseesforfire.github.io/images/OpenSees-1.jpg)
Solid elements to characterize the soil domain (continuum). response of pile foundations, bridge bents, or complete structures embedded in soils to earthquake excitations) Soil structure interaction problems (e.g. Consolidation problems (diffusion problems) Type of Geotechnical Problems that can be solved using OpenSees Workshop on Multi-Hazard Analysis of Structures using OpenSees Geotechnical Elements and Models in OpenSees