49.26 SteadyStateDirectStep object

The SteadyStateDirectStep object is used to calculate the linearized steady-state response of the system to harmonic excitation in terms of the physical degrees of freedom of the model.

The SteadyStateDirectStep object is derived from the AnalysisStep object.

Access
import step
mdb.models[name].steps[name]


49.26.1 SteadyStateDirectStep(...)

This method creates a SteadyStateDirectStep object.

Path
mdb.models[name].SteadyStateDirectStep

Required arguments

name

A String specifying the repository key.

previous

A String specifying the name of the previous step. The new step appears after this step in the list of analysis steps.

frequencyRange

Optional arguments

description

A String specifying a description of the new step. The default value is an empty string.

factorization

A SymbolicConstant specifying whether damping terms are to be ignored so that a real, rather than a complex, system matrix is factored. Possible values are REAL_ONLY and COMPLEX. The default value is COMPLEX.

scale

A SymbolicConstant specifying whether a logarithmic or linear scale is used for output. Possible values are LOGARITHMIC and LINEAR. The default value is LOGARITHMIC.

matrixStorage

A SymbolicConstant specifying the type of matrix storage. Possible values are SYMMETRIC, UNSYMMETRIC, and SOLVER_DEFAULT. The default value is SOLVER_DEFAULT.

maintainAttributes

A Boolean specifying whether to retain attributes from an existing step with the same name. The default value is False.

subdivideUsingEigenfrequencies

A Boolean specifying whether to subdivide each frequency range using the eigenfrequencies of the system. The default value is OFF.

frictionDamping

A Boolean specifying whether to add to the damping matrix contributions due to friction effects. The default value is OFF.

Return value

A SteadyStateDirectStep object.

Exceptions

RangeError.


49.26.2 setValues(...)

This method modifies the SteadyStateDirectStep object.

Required arguments

None.

Optional arguments

The optional arguments to setValues are the same as the arguments to the SteadyStateDirectStep method, except for the name, previous, and maintainAttributes arguments.

Return value

None

Exceptions

RangeError.


49.26.3  Members

The SteadyStateDirectStep object can have the following members:

name

A String specifying the repository key.

factorization

A SymbolicConstant specifying whether damping terms are to be ignored so that a real, rather than a complex, system matrix is factored. Possible values are REAL_ONLY and COMPLEX. The default value is COMPLEX.

scale

A SymbolicConstant specifying whether a logarithmic or linear scale is used for output. Possible values are LOGARITHMIC and LINEAR. The default value is LOGARITHMIC.

matrixStorage

A SymbolicConstant specifying the type of matrix storage. Possible values are SYMMETRIC, UNSYMMETRIC, and SOLVER_DEFAULT. The default value is SOLVER_DEFAULT.

subdivideUsingEigenfrequencies

A Boolean specifying whether to subdivide each frequency range using the eigenfrequencies of the system. The default value is OFF.

frictionDamping

A Boolean specifying whether to add to the damping matrix contributions due to friction effects. The default value is OFF.

previous

A String specifying the name of the previous step. The new step appears after this step in the list of analysis steps.

description

A String specifying a description of the new step. The default value is an empty string.

frequencyRange
explicit

A SymbolicConstant specifying whether the step has an explicit procedure type (procedureType=ANNEAL, DYNAMIC_EXPLICIT, or DYNAMIC_TEMP_DISPLACEMENT).

perturbation

A Boolean specifying whether the step has a perturbation procedure type.

nonmechanical

A Boolean specifying whether the step has a mechanical procedure type.

procedureType

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

suppressed

A Boolean specifying whether the step is suppressed or not. The default value is OFF.

fieldOutputRequestState

A repository of FieldOutputRequestState objects.

historyOutputRequestState

A repository of HistoryOutputRequestState objects.

diagnosticPrint

A DiagnosticPrint object.

monitor

A Monitor object.

restart

A Restart object.

adaptiveMeshConstraintStates

A repository of AdaptiveMeshConstraintState objects.

adaptiveMeshDomains

A repository of AdaptiveMeshDomain objects.

control

A Control object.

solverControl

A SolverControl object.

boundaryConditionStates

A repository of BoundaryConditionState objects.

interactionStates

A repository of InteractionState objects.

loadStates

A repository of LoadState objects.

loadCases

A repository of LoadCase objects.

predefinedFieldStates

A repository of PredefinedFieldState objects.


49.26.4  Corresponding analysis keywords

*STEADY STATE DYNAMICS
*STEP