ShapeTask object

Optional arguments

abaqusSensitivities

A Boolean specifying whether to use Abaqus to compute the design responses and their sensitivities. The default value is True.

absoluteStepSizeControl

A SymbolicConstant specifying whether to control the permitted absolute step size by the average optimization displacement or minimum optimization displacement. Possible values are MINIMUM and AVERAGE. The default value is MINIMUM.

activateDurability

A boolean specifying whether or not the durability approach of optimization is turned on. The default value is ON.

additionalDurabilityFiles

A String specifying the path of additional files pertaining to durability optimization. Only valid if the activateDurability argument is ON.

algorithm

A SymbolicConstant specifying the optimization task algorithm. Possible values are GENERAL_OPTIMIZATION and CONDITION_BASED_OPTIMIZATION. The default value is CONDITION_BASED_OPTIMIZATION.

constrainedLaplacianConvergenceLevel

A SymbolicConstant specifying the constrained Laplacian convergence level. Possible values are NORMAL, CONSERVATIVE, and AGGRESSIVE. The default value is NORMAL.

curvatureSmoothingEdgeLength

A Float specifying the edge length for the movement vector. The default value is 5.0.

durabilityInputfile

A string specifying the path of the input file. Only valid if the activateDurability argument is ON and is a required argument in that case.

durabilitySolver

A String specifying the type of solver for durability optimization. Possible values are: FE_SAFE, FEMFAT, and CUSTOM. The default value is FE_SAFE. Only valid if the activateDurability argument is ON.

equalityConstraintTolerance

A Float specifying the equality constraint tolerance. The default value is 10^–3.

featureRecognitionAngle

A Float specifying the mesh smoothing feature recognition angle for edges and corners. The default value is 30.0.

filterExponent

A Float specifying the weight depending on the radius, used when filterMaxRadius is specified. The default value is 1.0.

filterMaxRadius

None or a Float specifying the maximum influence radius for equivalent stress. The default value is None.

filterRadiusReduction

None or a Float specifying the reduction of the radius depending on surface bending, used when filterMaxRadius is specified. The default value is None.

firstCycleDeletedVolumeTechnique

A SymbolicConstant specifying the method of specifying volume that can be removed immediately in the first design cycle. Possible values are OFF, PERCENTAGE, and ABSOLUTE. The default value is OFF.

freezeBoundaryConditionRegions

A Boolean specifying whether to exclude nodes with boundary conditions from the optimization. The default value is OFF.

frozenBoundaryConditionRegion

The SymbolicConstant MODEL or a Region object specifying the region in which to freeze boundary condition regions, or the SymbolicConstant MODEL, used with freezeBoundaryConditionRegions. The default value is MODEL.

geometricRestrictionEvaluationFrequency

A SymbolicConstant specifying the frequency of evaluating geometric restrictions during mesh smoothing. Possible values are LOW, MEDIUM, and HIGH. The default value is LOW.

growthScaleFactor

A Float specifying the scale factor to apply to optimization displacements for nodes with growth. The default value is 1.0.

haltUponViolation

A Boolean specifying whether to halt the optimization if quality criteria are not satisified. The default value is OFF.

layerReferenceRegion

None or a Region object specifying the region specifying the first node layer for mesh smoothing, used when meshSmoothingRegionMethod is TASK_REGION_LAYERS. The default value is None.

meshSmoothingRegionMethod

A SymbolicConstant specifying the method used to determine the mesh smoothing region. The REGION value uses the smoothingRegion. The NUMBER_OF_LAYERS value uses the layerReferenceRegion. The TASK_REGION_LAYERS value will smooth six layers using the task region. Possible values are TASK_REGION_LAYERS, REGION, and NUMBER_OF_LAYERS. The default value is TASK_REGION_LAYERS.

meshSmoothingStrategy

A SymbolicConstant specifying the method smoothing strategy. Possible values are CONSTRAINED_LAPLACIAN and LOCAL_GRADIENT. The default value is CONSTRAINED_LAPLACIAN.

midsideInterpolation

A SymbolicConstant specifying the approach used when treating midside node positions during optimization. POSITIONS indicates midside node positions are interpolated linearly by position. OPTIMIZATION_DISPLACEMENT indicates they are interpolated by optimization displacement of corner nodes. Possible values are POSITIONS and OPTIMIZATION_DISPLACEMENT. The default value is POSITIONS.

numFreeNodeLayers

The SymbolicConstant FIX_NONE or an Int specifying the number of node layers adjoining the task region to remain free during mesh smoothing. A value of 0 indicates that no layers are free and all layers are fixed. The default value is 0.

numSmoothedElementLayers

None or an Int specifying the number of layers for mesh smoothing when meshSmoothingRegionMethod is NUMBER_OF_LAYERS. The default value is None.

presumeFeasibleBCRegionAtStart

A Boolean specifying whether to ignore automatically frozen boundary condition regions in the first design cycle. This is used with freezeBoundaryConditionRegions. The default value is ON.

quadMaxAngle

A Float specifying the maximum angle for quad elements during mesh smoothing. The default value is 160.0.

quadMinAngle

A Float specifying the minimum angle for quad elements during mesh smoothing. The default value is 20.0.

quadSkew

A Float specifying the skew angle for quad elements during mesh smoothing, used with reportQualityViolation. The default value is 30.0.

quadTaper

A Float specifying the taper for quad elements during mesh smoothing, used with reportQualityViolation. The default value is 0.5.

region

The SymbolicConstant MODEL or a Region object specifying the region to which the optimization task is applied. The default value is MODEL.

reportPoorQualityElements

A Boolean specifying whether to report poor quality elements during mesh smoothing. The default value is OFF.

reportQualityViolation

A Boolean specifying whether to report a quality criteria violation during mesh smoothing. The default value is OFF.

shrinkScaleFactor

A Float specifying the scale factor to apply to optimization displacements for nodes with shrinkage. The default value is 1.0.

smoothingRegion

None or a Region object specifying the mesh smoothing region, used when meshSmoothingRegionMethod is REGION. The default value is None.

targetMeshQuality

A SymbolicConstant specifying the target mesh quality for mesh smoothing. Possible values are NONE, LOW, MEDIUM, and HIGH. The default value is LOW.

tetAspectRatio

A Float specifying the tet element aspect ratio during mesh smoothing. The default value is 100.0.

tetMaxAspect

A Float specifying the maximum tet element aspect ratio during mesh smoothing. The default value is 8.0.

tetMinAspect

A Float specifying the minimum tet element aspect ratio during mesh smoothing. The default value is 0.222.

tetSkew

A Float specifying the tet element skew value during mesh smoothing. The default value is 100.0.

triMaxAngle

A Float specifying the tri element maximum angle during mesh smoothing. The default value is 140.0.

triMinAngle

A Float specifying the tri element maximum angle during mesh smoothing. The default value is 20.0.

updateShapeBasisVectors

A SymbolicConstant specifying whether to update shape basis vectors in the first design cycle or every design cycle. Possible values are EVERY_CYCLE and FIRST_CYCLE. The default value is EVERY_CYCLE.

groupOperator

A Boolean specifying whether the group in the design response will be evaluated using the existing algorithm or a new algorithm based on Abaqus sensitivities. The default value of False means that the existing algorithm will be used.