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UC San Diego Soil Materials and Elements (Oct 2008)

This user manual describes the user interfaces for: 1) a number of NDMaterial models developed for simulating nonlinear, drained/undrained soil response under general 3D cyclic loading conditions, and 2) a number of 2D and 3D solid-fluid fully coupled elements for simulating pore water pressure dissipation/redistribution. Please visit http://cyclic.ucsd.edu/opensees for examples.

Notes:

1. To avoid numerical difficulties encountered when using the soil models, the following units are recommended:

SI units - use kilonewtons (kN), meters (m), tons (unit for mass), seconds

English units - use pounds force (lbf), inches (in), seconds

2. The default values are in SI units.

In This Chapter

PressureDependMultiYield

PressureDependMultiYield02

PressureIndependMultiYield

PressureIndependMultiYield material is an elastic-plastic material in which plasticity exhibits only in the deviatoric stress-strain response. The volumetric stress-strain response is linear-elastic and is independent of the deviatoric response. This mate

updateMaterialStage

updateMaterials

parameter, addToParameter, and updateParameter

References

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