The HeatTransferStep object is used to control uncoupled heat transfer for either transient or steady-state response.
The HeatTransferStep object is derived from the AnalysisStep object.
import step mdb.models[name].steps[name]
This method creates a HeatTransferStep object.
mdb.models[name].HeatTransferStep
Required arguments
A String specifying the repository key.
A String specifying the name of the previous step. The new step appears after this step in the list of analysis steps.
Optional arguments
A String specifying a description of the new step. The default value is an empty string.
A SymbolicConstant specifying the analysis type. Possible values are STEADY_STATE and TRANSIENT. The default value is TRANSIENT.
A Float specifying the total time period. The default value is 1.0.
A SymbolicConstant specifying the time incrementation method to be used. Possible values are FIXED and AUTOMATIC. The default value is AUTOMATIC.
An Int specifying the maximum number of increments in a step. The default value is 100.
A Float specifying the initial time increment. The default value is the total time period for the step.
A Float specifying the minimum time increment allowed. The default value is the smaller of 0.8 times the initial time increment or 10–5 times the total time period.
A Float specifying the maximum time increment allowed. The default value is the total time period for the step.
None or a Float specifying the temperature change rate (temperature per time) used to define steady state. When all nodal temperatures are changing at less than this rate, the solution terminates. The default value is None.
Note: This parameter is ignored unless response=STEADY_STATE.
A Float specifying the maximum temperature change to be allowed in an increment during a transient heat transfer analysis. The default value is 0.0.
A Float specifying the maximum allowable emissivity change with temperature and field variables during an increment. The default value is 0.1.
A SymbolicConstant specifying the amplitude variation for loading magnitudes during the step. The default is STEP. Possible values are STEP and RAMP.
A SymbolicConstant specifying the type of extrapolation to use in determining the incremental solution for a nonlinear analysis. Possible values are NONE, LINEAR, and PARABOLIC. The default value is LINEAR.
A SymbolicConstant specifying the type of solver. Possible values are DIRECT and ITERATIVE. The default value is DIRECT.
A SymbolicConstant specifying the type of matrix storage. Possible values are SYMMETRIC, UNSYMMETRIC, and SOLVER_DEFAULT. The default value is SOLVER_DEFAULT.
A Boolean specifying whether to retain attributes from an existing step with the same name. The default value is False.
A SymbolicConstant specifying the technique used to for solving nonlinear equations. Possible values are FULL_NEWTON and QUASI_NEWTON. The default value is FULL_NEWTON.
An Int specifying the number of quasi-Newton iterations allowed before the kernel matrix is reformed.. The default value is 8.
A SymbolicConstant specifying whether to force a new iteration if severe discontinuities occur during an iteration. Possible values are PROPAGATED, CONVERT_SDI_OFF, and CONVERT_SDI_ON. The default value is PROPAGATED.
Return value
A HeatTransferStep object.
Exceptions
RangeError.
This method modifies the HeatTransferStep object.
Required arguments
Optional arguments
The optional arguments to setValues are the same as the arguments to the HeatTransferStep method, except for the name, previous, and maintainAttributes arguments.
Return value
Exceptions
RangeError.
The HeatTransferStep object can have the following members:
A String specifying the repository key.
A SymbolicConstant specifying the analysis type. Possible values are STEADY_STATE and TRANSIENT. The default value is TRANSIENT.
A Float specifying the total time period. The default value is 1.0.
A SymbolicConstant specifying the time incrementation method to be used. Possible values are FIXED and AUTOMATIC. The default value is AUTOMATIC.
An Int specifying the maximum number of increments in a step. The default value is 100.
A Float specifying the initial time increment. The default value is the total time period for the step.
A Float specifying the minimum time increment allowed. The default value is the smaller of 0.8 times the initial time increment or 10–5 times the total time period.
A Float specifying the maximum time increment allowed. The default value is the total time period for the step.
None or a Float specifying the temperature change rate (temperature per time) used to define steady state. When all nodal temperatures are changing at less than this rate, the solution terminates. The default value is None.
Note: This parameter is ignored unless response=STEADY_STATE.
A Float specifying the maximum temperature change to be allowed in an increment during a transient heat transfer analysis. The default value is 0.0.
A Float specifying the maximum allowable emissivity change with temperature and field variables during an increment. The default value is 0.1.
A SymbolicConstant specifying the amplitude variation for loading magnitudes during the step. The default is STEP. Possible values are STEP and RAMP.
A SymbolicConstant specifying the type of extrapolation to use in determining the incremental solution for a nonlinear analysis. Possible values are NONE, LINEAR, and PARABOLIC. The default value is LINEAR.
A SymbolicConstant specifying the type of solver. Possible values are DIRECT and ITERATIVE. The default value is DIRECT.
A SymbolicConstant specifying the type of matrix storage. Possible values are SYMMETRIC, UNSYMMETRIC, and SOLVER_DEFAULT. The default value is SOLVER_DEFAULT.
A SymbolicConstant specifying the technique used to for solving nonlinear equations. Possible values are FULL_NEWTON and QUASI_NEWTON. The default value is FULL_NEWTON.
An Int specifying the number of quasi-Newton iterations allowed before the kernel matrix is reformed.. The default value is 8.
A SymbolicConstant specifying whether to force a new iteration if severe discontinuities occur during an iteration. Possible values are PROPAGATED, CONVERT_SDI_OFF, and CONVERT_SDI_ON. The default value is PROPAGATED.
A String specifying the name of the previous step. The new step appears after this step in the list of analysis steps.
A String specifying a description of the new step. The default value is an empty string.
A SymbolicConstant specifying whether the step has an explicit procedure type (procedureType=ANNEAL, DYNAMIC_EXPLICIT, or DYNAMIC_TEMP_DISPLACEMENT).
A Boolean specifying whether the step has a perturbation procedure type.
A Boolean specifying whether the step has a mechanical procedure type.
A SymbolicConstant specifying the Abaqus procedure. Possible values are:
ANNEAL
BUCKLE
COMPLEX_FREQUENCY
COUPLED_TEMP_DISPLACEMENT
COUPLED_THERMAL_ELECTRIC
DIRECT_CYCLIC
DYNAMIC_IMPLICIT
DYNAMIC_EXPLICIT
DYNAMIC_SUBSPACE
DYNAMIC_TEMP_DISPLACEMENT
COUPLED_THERMAL_ELECTRICAL_STRUCTURAL
FLOW
FREQUENCY
GEOSTATIC
HEAT_TRANSFER
MASS_DIFFUSION
MODAL_DYNAMICS
RANDOM_RESPONSE
RESPONSE_SPECTRUM
SOILS
STATIC_GENERAL
STATIC_LINEAR_PERTURBATION
STATIC_RIKS
STEADY_STATE_DIRECT
STEADY_STATE_MODAL
STEADY_STATE_SUBSPACE
VISCO
A Boolean specifying whether the step is suppressed or not. The default value is OFF.
A repository of FieldOutputRequestState objects.
A repository of HistoryOutputRequestState objects.
A DiagnosticPrint object.
A Monitor object.
A Restart object.
A repository of AdaptiveMeshConstraintState objects.
A repository of AdaptiveMeshDomain objects.
A Control object.
A SolverControl object.
A repository of BoundaryConditionState objects.
A repository of InteractionState objects.
A repository of LoadState objects.
A repository of LoadCase objects.
A repository of PredefinedFieldState objects.