zone cmodel command
Syntax
- zone cmodel keyword
-
Assign, load, or get information on a zone constitutive model. This command associates a constitutive model with specified zones in the grid. It also allows querying of properties and states of constitutive models, and dynamic loading of user-defined mechanical models as DLLs.
- assign keyword <overlay i > <range>
assigns a mechanical material model to all zones in the range.
The optional keyword overlay assigns either two overlaid sets of five constant-strain tetrahedral elements to each zone ( i =2 ), or one set of five tetrahedral elements to each zone ( i =1 ). The default is set to double-overlaid elements. Use of zones with a single overlay for mechanical calculations is not recommended.
The mechanical constitutive models are described in Constitutive Models, and the creep models are in Creep Constitutive Models.
- anisotropic
transversely-anisotropic elastic model (see the Anisotropic model description).
- burgers
classical viscoelastic model known as the Burgers substance which composed of a Kelvin model and a Maxwell model (only available for the creep option; see the Burgers model description).
- burgers-mohr
viscoplastic model combining the Burgers model and the Mohr-Coulomb model (only available for the creep option; see the Burgers-Mohr model description).
- cap-yield
cap-yield elasto-plasticity model, known also as CYSoil model (see the CYSoil model description).
- cap-yield-simplified
simplified cap yield elasto-plasticity model, known also as CHSoil model (see the CHSoil model description).
- double-yield
double-yield (cap) elasto-plasticity model (see the Double-Yield model description).
- drucker-prager
Drucker-Prager elasto-plasticity model (see the Drucker-Prager model description).
- elastic
isotropic elastic model (see the Elastic Model description).
- finn
dynamic pore-pressure generation elasto-plasticity model (only available for the dynamic option; see the Finn model description).
- hoek-brown
Hoek-Brown elasto-plasticity model (see the Hoek-Brown model description).
- hoek-brown-pac
Hoek-Brown-PAC elasto-plasticity model (see the Hoek-Brow-PAC model description).
- hydration-drucker-prager
modified Drucker-Prager for hydration (only available for the thermal option; see see the Hydration-Drucker-Prager model description).
- maxwell
classical viscoelastic model known as the Maxwell substance, known also as Maxwell model (only available for the creep option; see the Maxwell model description).
- modified-cam-clay
modified Cam-Clay elasto-plasticity model (see the modified Cam-Clay model description).
- mohr-coulomb
Mohr-Coulomb elasto-plasticity model (see the Mohr-Coulomb model description).
- mohr-coulomb-tension
Mohr-Coulomb elasto-plasticity model with tensile strain crack tracking, known also as the MohrT model (see the Mohr-Coulomb-Tension model description).
- null
null model — for most purposes null models are ignored by default, and zones adjacent to them are treated as surfaces (see the Null model description).
- orthotropic
orthotropic elastic model (see the Orthotropic model description).
- plastic-hardening
elasto-plasticity model with shear and volumetric hardening, known also as PH model (see the Plastic-Hardening model description).
- power
two-component power law model used for mining applications (only available for the creep option; see the Power model description).
- power-mohr
viscoplastic model combining the two-component Power model and the Mohr-Coulomb model (only available for the creep option; see the Power-Mohr model description).
- power-ubiquitous
viscoplastic model combining the two-component Power model and the Ubiquitous-Joint model (only available for the creep option; see the Power-Ubiqitous mdoel description).
- softening-ubiquitous
strain-softening/hardening elasto-plasticity model with bilinear failure and ubiquitous joints, known also as the SUBI model (see the Softening-Ubiquitous model description).
- strain-softening
strain-softening/hardening elasto-plasticity model (see the Strain-Softening model description).
- swell
Mohr-Coulomb elasto-plasticity model considering wetting-induced deformation (see the Swell model description).
- ubiquitous-joint
Mohr-Coulomb elasto-plasticity model with a plane of weakness, known also as UBI model (see the Ubiquitous-Joint model description).
- ubiquitous-anisotropic
model with a plane of weakness and with anisotropic elasticity (see the Ubiquitous-Anisotropic model description).
- wipp
a reference creep model commonly used in thermomechanical analyses associated with studies for the underground isolation of nuclear waste in salt (only available for the creep option; see the WIPP model description).
- wipp-drucker
a viscoplastic model combining the WIPP model and the Drucker-Prager model (only available for the creep option, see the WIPP-Drucker model description).
- wipp-salt
viscoplastic model modified from the WIPP model, and includes volumetric and deviatoric compaction behavior for salt-like materials (only available for the creep option; see the WIPP-Salt model description).
- list keyword
- names <s >
Outputs available mechanical model keywords, names and version numbers. Output is restricted to the model named s if supplied.
- load <s >
attempts to dynamically load a DLL version of a constitutive model, identified by s. Once loaded, the DLL model can be assigned to zones in the grid using the
zone cmodel assign
command andrange
keywords. See Writing New Constitutive Models for a guide to creating user-defined models as DLLs.zone cmodel load
can only be applied ifmodel configure plugin
is invoked. Also see thezone cmodel load
command.s can either be the keyword used by the model, which should expand into the model dll name as modelname006.dll (where ‘name’ is the name provided by s), or it can be full name of the dll. If a relative filename is given, both the current directory and the directory FLAC3D is installed in will be searched, including subdirectories.
zone.constitutive-model can be used
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