Step Miscellaneous#
Miscellaneous Step commands are used for configuring controls, damping, and frequency tables.
Object features#
CompositeDamping#
- class CompositeDamping[source]#
A CompositeDamping object contains composite modal damping parameters.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].compositeDamping
- Attributes:
- components: CompositeDampingComponentArray
A
CompositeDampingComponentArray
object.
CompositeDampingComponent#
- class CompositeDampingComponent[source]#
A CompositeDampingComponent object is used to define composite damping over a range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].compositeDamping.components[i]
- Attributes:
- start: int
An Int specifying the mode number of the lowest mode of a range.
- end: int
An Int specifying the mode number of the highest mode of a range.
CompositeDampingComponentArray#
Control#
- class Control[source]#
The Control object is used to provide additional optional general solution controls.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].control
Methods
setValues
([allowPropagation, ...])This method modifies the Control object.
- setValues(allowPropagation: BooleanType = 1, resetDefaultValues: BooleanType = 0, discontinuous: BooleanType = 0, constraints: SymbolicConstantType | float = 'DEFAULT', lineSearch: SymbolicConstantType | float = 'DEFAULT', timeIncrementation: SymbolicConstantType | float = 'DEFAULT', directCyclic: SymbolicConstantType | float = 'DEFAULT', concentrationField: SymbolicConstantType | float = 'DEFAULT', displacementField: SymbolicConstantType | float = 'DEFAULT', electricalPotentialField: SymbolicConstantType | float = 'DEFAULT', globalField: SymbolicConstantType | float = 'DEFAULT', hydrostaticFluidPressureField: SymbolicConstantType | float = 'DEFAULT', poreFluidPressureField: SymbolicConstantType | float = 'DEFAULT', rotationField: SymbolicConstantType | float = 'DEFAULT', temperatureField: SymbolicConstantType | float = 'DEFAULT', vcctLinearScaling: SymbolicConstantType | float = 'DEFAULT')[source]#
This method modifies the Control object.
- Parameters:
- allowPropagation
A Boolean specifying whether to allow all control values to propagate from a previous step. Setting this argument to ON automatically sets resetDefaultValues to OFF. The default value is ON.
- resetDefaultValues
A Boolean specifying whether to use all default control values. Setting this argument to ON automatically sets allowPropagation to OFF. The default value is OFF.
- discontinuous
A Boolean specifying whether to set timeIncrementation values that will usually improve efficiency for analyses with severely discontinuous behavior. The default value is OFF.
- constraints
The SymbolicConstant DEFAULT or a sequence of Floats specifying tolerances on constraint equations. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- lineSearch
The SymbolicConstant DEFAULT or a sequence of Floats specifying line search control parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- timeIncrementation
The SymbolicConstant DEFAULT or a sequence of Floats specifying time incrementation control parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- directCyclic
The SymbolicConstant DEFAULT or a sequence of Floats specifying direct cyclic control parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- concentrationField
The SymbolicConstant DEFAULT or a sequence of Floats specifying mass concentration field equilibrium equation parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- displacementField
The SymbolicConstant DEFAULT or a sequence of Floats specifying displacement field and warping degree of freedom field equilibrium equation parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- electricalPotentialField
The SymbolicConstant DEFAULT or a sequence of Floats specifying electrical potential field equilibrium equation parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- globalField
The SymbolicConstant DEFAULT or a sequence of Floats specifying parameters for all applicable field equilibrium equations. This argument overwrites all other field equilibrium equation control values. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- hydrostaticFluidPressureField
The SymbolicConstant DEFAULT or a sequence of Floats specifying hydrostatic fluid element volume constraint parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- poreFluidPressureField
The SymbolicConstant DEFAULT or a sequence of Floats specifying pore liquid volumetric continuity equilibrium equation parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- rotationField
The SymbolicConstant DEFAULT or a sequence of Floats specifying rotation field equilibrium equation parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- temperatureField
The SymbolicConstant DEFAULT or a sequence of Floats specifying temperature field equilibrium equation parameters. If a specified sequence contains a value of 0, that item in the sequence will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- vcctLinearScaling
The SymbolicConstant DEFAULT or a Float specifying linear scaling parameter for a VCCT debonding analysis. If a specified value is 0, it will be set to its system-defined value. The value can also be the SymbolicConstant DEFAULT. The default value is DEFAULT.
- Raises:
RangeError
DirectDamping#
- class DirectDamping[source]#
A DirectDamping object contains direct modal damping parameters.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].directDamping
- Attributes:
- components: DirectDampingComponentArray
A
DirectDampingComponentArray
object.
DirectDampingByFrequency#
- class DirectDampingByFrequency[source]#
A DirectDampingByFrequency object contains direct damping parameters.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].directDampingByFrequency
- Attributes:
- components: DirectDampingByFrequencyComponentArray
A
DirectDampingByFrequencyComponentArray
object.
DirectDampingByFrequencyComponent#
- class DirectDampingByFrequencyComponent[source]#
A DirectDampingByFrequencyComponent object is used to define direct damping over a range of frequencies.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].directDampingByFrequency.components[i]
- Attributes:
- frequency: float
A Float specifying the frequency value in cycles/time.
- fraction: float
A Float specifying the fraction of critical damping.
DirectDampingByFrequencyComponentArray#
DirectDampingComponent#
- class DirectDampingComponent[source]#
A DirectDampingComponent object is used to define direct damping over a range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].directDamping.components[i]
- Attributes:
- start: int
An Int specifying the mode number of the lowest mode of a range.
- end: int
An Int specifying the mode number of the highest mode of a range.
- fraction: float
A Float specifying the fraction of critical damping.
DirectDampingComponentArray#
EmagTimeHarmonicFrequency#
- class EmagTimeHarmonicFrequency[source]#
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].frequencyRange[i]
- Attributes:
- lower: float
A Float specifying the lower limit of frequency range or a single frequency, in cycles/time.
- upper: float
A Float specifying the upper limit of frequency range, in cycles/time.
- nPoints: int
An Int specifying the number of points in the frequency range at which results should be given.
EmagTimeHarmonicFrequencyArray#
MassScaling#
- class MassScaling[source]#
A MassScaling object defines the region and controls that govern mass scaling.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].massScaling[i]
- Attributes:
- objective: SymbolicConstant
A SymbolicConstant specifying
the
objective ofthe
mass scaling definition. Possible values are SEMI_AUTOMATIC, AUTOMATIC, and REINITIALIZE. The default value is SEMI_AUTOMATIC.- occurs: SymbolicConstant
A SymbolicConstant specifying whether mass scaling should be performed at the beginning of the step or throughout the step. Possible values are AT_BEGINNING and THROUGHOUT_STEP.
- type: SymbolicConstant
A SymbolicConstant specifying the type of scaling. Possible values are UNIFORM, BELOW_MIN, SET_EQUAL_DT, and ROLLING. The default value is BELOW_MIN.
- factor: float
A Float specifying a scaling factor.
- dt: float
A Float specifying a target time increment.
- frequency: int
An Int specifying the frequency at which mass scaling calculations are performed.
- numberInterval: int
An Int specifying the number of intervals at which mass scaling calculations are performed.
- feedRate: float
A Float specifying the estimated average velocity of the workpiece in the rolling direction at steady-state conditions.
- extrudedLength: float
A Float specifying the average element length in the extruded direction.
- crossSection: int
An Int specifying the number of nodes in the cross-section of the workpiece.
- direction: SymbolicConstant
A SymbolicConstant specifying the rolling direction. Possible values are GLOBAL_X, GLOBAL_Y, GLOBAL_Z, and GLOBAL_NONE. The default value is GLOBAL_X.
- region: SymbolicConstant
The SymbolicConstant MODEL or a
Region
object specifying where the mass scaling is applied. The default value is MODEL.
MassScalingArray#
RandomResponseFrequency#
- class RandomResponseFrequency[source]#
A RandomResponseFrequency is an object used to define frequency over a range of modes. This page discusses:
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].freq[i]
- Attributes:
- lower: float
A Float specifying the lower limit of the frequency range in cycles per time.
- upper: float
A Float specifying the upper limit of the frequency range in cycles per time.
- nCalcs: int
An Int specifying the number of points between eigenfrequencies at which the response should be calculated.
- bias: float
A Float specifying the bias parameter.
RandomResponseFrequencyArray#
RayleighDamping#
- class RayleighDamping[source]#
A RayleighDamping object contains Rayleigh Damping parameters.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].rayleighDamping
- Attributes:
- components: RayleighDampingComponentArray
A
RayleighDampingComponentArray
object.
RayleighDampingByFrequency#
- class RayleighDampingByFrequency[source]#
A RayleighDampingByFrequency object contains Rayleigh Damping parameters.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].rayleighDampingByFrequency
- Attributes:
- components: RayleighDampingByFrequencyComponentArray
A
RayleighDampingByFrequencyComponentArray
object.
RayleighDampingByFrequencyComponent#
- class RayleighDampingByFrequencyComponent[source]#
A RayleighDampingByFrequencyComponent object is used to define Rayleigh damping over a range of frequencies.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].rayleighDampingByFrequency.components[i]
- Attributes:
- frequency: float
A Float specifying the frequency value in cycles/time.
- alpha: float
A Float specifying the mass proportional damping, αM.
- beta: float
A Float specifying the stiffness proportional damping, βM.
RayleighDampingByFrequencyComponentArray#
RayleighDampingComponent#
- class RayleighDampingComponent[source]#
A RayleighDampingComponent object is used to define Rayleigh damping over a range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].rayleighDamping.components[i]
- Attributes:
- start: int
An Int specifying the mode number of the lowest mode of a range.
- end: int
An Int specifying the mode number of the highest mode of a range.
- alpha: float
A Float specifying the mass proportional damping, αM.
- beta: float
A Float specifying the stiffness proportional damping, βM.
RayleighDampingComponentArray#
ResponseSpectrumComponent#
- class ResponseSpectrumComponent[source]#
A ResponseSpectrumComponent is an element of the ResponseSpectrumComponentArray.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].components[i]
- Attributes:
- x: float
A Float specifying the X-direction cosine.
- y: float
A Float specifying the Y-direction cosine.
- z: float
A Float specifying the Z-direction cosine.
- scale: float
A Float specifying the scale factor.
- timeDuration: float
A Float specifying the time duration of the dynamic event, from which this spectrum was created.Note:This parameter is ignored unless used with the DSC modal summation rule.
- respSpectrum: str
A String specifying the name of the response spectrum specified with the keyword SPECTRUM.
ResponseSpectrumComponentArray#
SolverControl#
- class SolverControl[source]#
The SolverControl object is used to provide additional optional solver controls.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].solverControl
Methods
setValues
([allowPropagation, ...])This method modifies the SolverControl object.
- setValues(allowPropagation: BooleanType = 1, resetDefaultValues: BooleanType = 0, relativeTolerance: SymbolicConstantType | float = 'DEFAULT', maxIterations: SymbolicConstantType = 'DEFAULT', fillInLevel: SymbolicConstantType = 'DEFAULT')[source]#
This method modifies the SolverControl object.
- Parameters:
- allowPropagation
A Boolean specifying whether to allow all solver control values to propagate from a previous step. Setting this argument to ON automatically sets resetDefaultValues to OFF. The default value is ON.
- resetDefaultValues
A Boolean specifying whether to use all default solver control values. Setting this argument to ON automatically sets *allowPropagation*to OFF. The default value is OFF.
- relativeTolerance
The SymbolicConstant DEFAULT or a Float specifying the relative tolerance for convergence of the domain decomposition iterative solver. The default value is DEFAULT.
- maxIterations
The SymbolicConstant DEFAULT or an Int specifying the maximum number of linear solver iterations. The default value is DEFAULT.
- fillInLevel
The SymbolicConstant DEFAULT or an Int specifying the incomplete LU factorization fill-in level (for geostatic and soil analysis only). The default value is DEFAULT.
- Raises:
RangeError
SteadyStateDirectFrequency#
- class SteadyStateDirectFrequency[source]#
A SteadyStateDirectFrequency is an object used to define frequency over range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].frequencyRange[i]
- Attributes:
- lower: float
A Float specifying the lower limit of frequency range or a single frequency, in cycles/time.
- upper: float
A Float specifying the upper limit of frequency range, in cycles/time.
- nPoints: int
An Int specifying the number of points in the frequency range at which results should be given.
- bias: float
A Float specifying the Bias parameter. When results are requested at four or more frequency points, Abaqus biases the results toward the ends of the intervals to obtain better resolution. The default value is 3.0.
SteadyStateDirectFrequencyArray#
SteadyStateModalFrequency#
- class SteadyStateModalFrequency[source]#
A SteadyStateModalFrequency is an object used to define frequency over a range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].frequencyRange[i]
- Attributes:
- lower: float
A Float specifying the lower limit of frequency range or a single frequency, in cycles/time.
- upper: float
A Float specifying the upper limit of frequency range, in cycles/time.
- nPoints: int
An Int specifying the number of points in the frequency range at which results should be given.
- bias: float
A Float specifying the bias parameter. When results are requested at four or more frequency points, Abaqus biases the results toward the ends of the intervals to obtain better resolution. The default value is 3.0.
SteadyStateModalFrequencyArray#
SteadyStateSubspaceFrequency#
- class SteadyStateSubspaceFrequency[source]#
A SteadyStateSubspaceFrequency is an object used to define frequency over range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].frequencyRange[i]
- Attributes:
- lower: float
A Float specifying the lower limit of frequency range or a single frequency, in cycles/time.
- upper: float
A Float specifying the upper limit of frequency range, in cycles/time.
- nPoints: int
An Int specifying the number of points in the frequency range at which results should be given.
- bias: float
A Float specifying the Bias parameter. When results are requested at four or more frequency points, Abaqus biases the results toward the ends of the intervals to obtain better resolution. The default value is 3.0.
SteadyStateSubspaceFrequencyArray#
StructuralDamping#
- class StructuralDamping[source]#
A StructuralDamping object contains structural damping parameters.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].structuralDamping
- Attributes:
- components: StructuralDampingComponentArray
A
StructuralDampingComponentArray
object.
StructuralDampingByFrequency#
StructuralDampingByFrequencyComponent#
- class StructuralDampingByFrequencyComponent[source]#
A StructuralDampingByFrequencyComponent object is used to define structural damping over a range of frequencies.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].structuralDampingByFrequency.components[i]
- Attributes:
- frequency: float
A Float specifying the frequency value in cycles/time.
- factor: float
A Float specifying the damping factor, s.
StructuralDampingByFrequencyComponentArray#
StructuralDampingComponent#
- class StructuralDampingComponent[source]#
A StructuralDampingComponent object is used to define structural damping over a range of modes.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].structuralDamping.components[i]
- Attributes:
- start: int
An Int specifying the mode number of the lowest mode of a range.
- end: int
An Int specifying the mode number of the highest mode of a range.
- factor: float
A Float specifying the damping factor, s.
StructuralDampingComponentArray#
SubstructureGenerateFrequency#
- class SubstructureGenerateFrequency[source]#
A SubstructureGenerateFrequency object is used to define the modes to be used in a modal dynamic analysis. These modes are selected from the specified frequency range including the frequency boundary.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].frequencyRange[i]
- Attributes:
- lower: float
A Float specifying the lower limit of the frequency range, in cycles/time.
- upper: float
A Float specifying the upper limit of the frequency range, in cycles/time.
SubstructureGenerateFrequencyArray#
SubstructureGenerateModes#
- class SubstructureGenerateModes[source]#
A SubstructureGenerateModes object is used to define the modes to be used in a modal dynamic analysis.
Notes
This object can be accessed by:
import step mdb.models[name].steps[name].modeRange[i]
- Attributes:
- start: int
An Int specifying the mode number of the lowest mode of a range.
- end: int
An Int specifying the mode number of the highest mode of a range.
- increment: int
An Int specifying the increment used to define the intermediate mode numbers beginning from the lowest mode to the highest mode.