ConnectorPlasticity object

ConnectorPlasticity(...)

This method creates a connector plasticity behavior option for a ConnectorSection object.

Path

          import connectorBehavior
          connectorBehavior.ConnectorPlasticity
          import odbConnectorBehavior
          odbConnectorBehavior.ConnectorPlasticity

Required arguments

None.

Optional arguments

coupling

A SymbolicConstant specifying whether or not the behavior is coupled. Possible values are UNCOUPLED and COUPLED. The default value is UNCOUPLED.

isotropic

A Boolean specifying whether isotropic hardening data will be used. The default value is ON.

If isotropic=OFF, then kinematic must be specified as ON.

isotropicType

A SymbolicConstant specifying the type of isotropic hardening to be specified. Possible values are TABULAR and EXPONENTIAL_LAW. The default value is TABULAR.

This argument is applicable only if isotropic=ON.

isotropicTemperature

A Boolean specifying whether the isotropic data depend on temperature. The default value is OFF.

This argument is applicable only if isotropic=ON.

isotropicDependencies

An Int specifying the number of field variable dependencies for the isotropic data. The default value is 0.

This argument is applicable only if isotropic=ON.

kinematic

A Boolean specifying whether kinematic hardening data will be used. The default value is OFF.

If kinematic=OFF, then isotropic must be specified as ON.

kinematicType

A SymbolicConstant specifying the type of kinematic hardening to be specified. Possible values are HALF_CYCLE, STABILIZED, and PARAMETERS. The default value is HALF_CYCLE.

This argument is applicable only if kinematic=ON.

kinematicTemperature

A Boolean specifying whether the kinematic data depend on temperature. The default value is OFF.

This argument is applicable only if kinematic=ON.

kinematicDependencies

An Int specifying the number of field variable dependencies for the kinematic data. The default value is 0.

This argument is applicable only if kinematic=ON.

forcePotentialOperator

A SymbolicConstant specifying the contribution operator for the force potential contributions. Possible values are SUM and MAXIMUM. The default value is SUM.

This argument is applicable only if coupling=COUPLED.

forcePotentialExponent

A Float specifying the number equal to the inverse of the overall exponent in the force potential definition. The default value is 2.0.

This argument is applicable only if coupling=COUPLED and if forcePotentialOperator=SUM.

connectorPotentials

A ConnectorPotentialArray object specifying one ConnectorPotential object for each force potential contribution. This member can be specified only if coupling=COUPLED.

isotropicTable

A sequence of sequences of Floats specifying isotropic plasticity properties. Items in the isotropicTable data are described below. This argument is applicable only if isotropic=ON. The default value is an empty sequence.

kinematicTable

A sequence of sequences of Floats specifying kinematic plasticity properties. Items in the kinematicTable data are described below. This argument is applicable only if kinematic=ON. The default value is an empty sequence.

components

A sequence of Ints specifying the components of relative motion for which the behavior is defined. Possible values are 1 $\leq$ components $\leq$ 6. Only available components can be specified. This argument can be specified only if coupling=UNCOUPLED. The default value is an empty sequence.

Table data

Table data for isotropicTable:

If isotropicType=TABULAR, then each sequence of the table data specifies the following:

Equivalent yield force or moment defining the size of the elastic range.
Equivalent relative plastic motion.
Equivalent relative plastic motion rate.
Temperature, if the data depend on temperature.
Value of the first field variable, if the data depend on field variables.
Value of the second field variable.
Etc.

If isotropicType=EXPONENTIAL_LAW, then each sequence of the table data specifies the following:

Equivalent force or moment defining the size of the elastic range at zero plastic motion.
Isotropic hardening parameter $Q_{inf}$ .
Isotropic hardening parameter $b$ .
Temperature, if the data depend on temperature.
Value of the first field variable, if the data depend on field variables.
Value of the second field variable.
Etc.

Table data for kinematicTable:

If kinematicType=HALF_CYCLE, then each sequence of the table data specifies the following:

Yield force or moment.
Connector relative plastic motion.
Temperature, if the data depend on temperature.
Value of the first field variable, if the data depend on field variables.
Value of the second field variable.
Etc.

If kinematicType=STABILIZED, then each sequence of the table data specifies the following:

Yield force or moment.
Connector relative plastic motion.
Connector relative constitutive motion range.
Temperature, if the data depend on temperature.
Value of the first field variable, if the data depend on field variables.
Value of the second field variable.
Etc.

If kinematicType=PARAMETERS, then each sequence of the table data specifies the following:

Yield force or moment at zero relative plastic motion.
Kinematic hardening parameter $C$ .
Kinematic hardening parameter $γ$ . Set $γ$ =0 to specify linear Ziegler kinematic hardening.
Temperature, if the data depend on temperature.
Value of the first field variable, if the data depend on field variables.
Value of the second field variable.
Etc.

Return value

A ConnectorPlasticity object.

Exceptions

ValueError and TextError.

setValues(...)

This method modifies the ConnectorPlasticity object.

Required arguments

None.

Optional arguments

The optional arguments to setValues are the same as the arguments to the ConnectorPlasticity method.

Return value

None.

Exceptions

ValueError.

Members

The ConnectorPlasticity object has members with the same names and descriptions as the arguments to the ConnectorPlasticity method.

In addition, the ConnectorPlasticity object can have the following members:

isotropicOptions: A ConnectorOptions object specifying the ConnectorOptions used to define tabular options for the isotropic hardening table.
kinematicOptions: A ConnectorOptions object specifying the ConnectorOptions used to define tabular options for the kinematic hardening table.

ConnectorPlasticity object

Access