The ComplexFrequencyStep object is used to perform eigenvalue extraction to calculate the complex eigenvalues and corresponding complex mode shapes of a system.
The ComplexFrequencyStep object is derived from the AnalysisStep object.
import step mdb.models[name].steps[name]
This method creates a ComplexFrequencyStep object.
mdb.models[name].ComplexFrequencyStep
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
The SymbolicConstant ALL or an Int specifying the number of complex eigenmodes to be calculated or a SymbolicConstant ALL. The default value is ALL.
A String specifying a description of the new step. The default value is an empty string.
None or a Float specifying the shift point in cycles per time. The default value is None.
A Boolean specifying whether to add to the damping matrix contributions due to friction effects. The default value is OFF.
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.
None or a Float specifying the minimum frequency of interest in cycles per time. The default value is None.
None or a Float specifying the maximum frequency of interest in cycles per time. The default value is None.
None or a Float specifying the frequency at which to evaluate frequency-dependent properties for viscoelasticity, springs, and dashpots during the eigenvalue extraction. If the value is None, the analysis product will evaluate the stiffness associated with frequency-dependent springs and dashpots at zero frequency and will not consider the stiffness contributions from frequency-domain viscoelasticity in the step. The default value is None.
Return value
A ComplexFrequencyStep object.
Exceptions
RangeError.
This method modifies the ComplexFrequencyStep object.
Required arguments
Optional arguments
The optional arguments to setValues are the same as the arguments to the ComplexFrequencyStep method, except for the name, previous, and maintainAttributes arguments.
Return value
Exceptions
RangeError.
The ComplexFrequencyStep object can have the following members:
A String specifying the repository key.
The SymbolicConstant ALL or an Int specifying the number of complex eigenmodes to be calculated or a SymbolicConstant ALL. The default value is ALL.
None or a Float specifying the shift point in cycles per time. The default value is None.
A Boolean specifying whether to add to the damping matrix contributions due to friction effects. The default value is OFF.
A SymbolicConstant specifying the type of matrix storage. Possible values are SYMMETRIC, UNSYMMETRIC, and SOLVER_DEFAULT. The default value is SOLVER_DEFAULT.
None or a Float specifying the minimum frequency of interest in cycles per time. The default value is None.
None or a Float specifying the maximum frequency of interest in cycles per time. The default value is None.
None or a Float specifying the frequency at which to evaluate frequency-dependent properties for viscoelasticity, springs, and dashpots during the eigenvalue extraction. If the value is None, the analysis product will evaluate the stiffness associated with frequency-dependent springs and dashpots at zero frequency and will not consider the stiffness contributions from frequency-domain viscoelasticity in the step. The default value is None.
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.