Formula Field dialog box

The Formula Field dialog box consists of a series of step-by-step pages that lead you through the process of using expressions to define the relationship between the dependent and independent domains.

Some of the following pages are contingent on the solver, the dependent and independent domain, and the options you select.

Name page

Name
Name	Specifies a name for the formula field.
Label	Specifies a unique numeric identifier for the formula field.
Description	Specifies a description (optional) for the formula field.

Dependent Domain page

Dependent Domain
Dependent	Selects the dependent domain to use for the formula field.Two lists are provided. The first list is the domain type list. The second is the domain list. The selection in the domain type list dictates which domains are included in the domain list. The options for the domain type list are the same as those for the independent domain.

Independent Domain page

Independent Domain
Independent	Selects the independent domain to use for the formula field.Two lists are provided. The first list is the domain type list. The second is the domain list. The selection in the domain type list dictates which domains are included in the domain list. The options for the domain type list are as follows:Most UsedIncludes the most frequently used domains in the domain list.Filter By NameEnables auto-complete in the domain list.1-DIncludes only one-variable domains in the domain list.For example, if you select Frequency from the domain list, the software creates a domain with frequency as the variable.2-DIncludes only two-variable domains in the domain list.For example, if you select Frequency from the domain list, the software creates a domain with two frequencies as the variables. If you select XY Plane from the domain list, the software creates a domain with the x- and y-coordinates as the variables3-DIncludes only three-variable domains in the domain list.For example, if you select Frequency from the domain list, the software creates a domain with three frequencies as the variables. If you select Cartesian from the domain list, the software creates a domain with the x-, y-, and z-coordinates as the variablesN-DFor an independent domain, includes only Strain Tensor in the domain list. For a dependent domain, include only Balanced Strain, Strain Tensor, and Stress Tensor in the domain list.Multi-domainIncludes domains that are combinations of two 1-D domains like Frequency, Parameter, or one 1-D domain and one 2-D domain like Frequency, Parameter Plane, or one 1-D domain and one 3-D domain like Frequency, Parameter Space in the domain list.Application SpecificIncludes only highly specialized domains in the domain list.
Type	Appears when the independent domain is spatialDefines how the field is mapped to model space.The following options in the Type list depend on the independent domain you select.GlobalMaps the field to global coordinates.CartesianMaps the field using a Cartesian coordinate system.CylindricalMaps the field using a cylindrical coordinate system.SphericalMaps the field using a spherical coordinate system.Parametric SpaceMaps the field to (u,v,w) parametric coordinates.Parametric PlaneMaps the field to (u,v) parametric coordinates.Parametric LineMaps the field to an arbitrary line. You can select points, edges, and curves to define a u-section that defines a parametric line in Cartesian space. The software uses all the objects you select to define a single curve where the starting point represents u = 0 and the end point represents u = 1.
Specify CSYS	Appears when Type is set to Cartesian, Cylindrical, or Spherical.Specifies a local coordinate system as the coordinate basis of the spatial variables in the formula.
Subtype	Appears when the Independent domain is Cartesian, Cylindrical, or Spherical.Cloud maps 3D data as a cloud of points to a 2D location. The data may or may not conform to geometry when you apply the field as a boundary condition.Surface maps 3D data to a surface that you select. This is an effective technique for complex surfaces.
Select Face	Appears when Subtype is set to Surface.Selects the face or surface to which the formula field is mapped.
Stacked Smart Selector Methods	Appears when Subtype is set to Surface.Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Tolerance	Appears when Subtype is set to Surface.Defines a distance from the selected face.
Calculate tolerance based on current field definition	Appears when Subtype is set to Surface.Calculates the tolerance based on the field definition.
Bounding Box Type	Appears when Type is set to Parametric Space.Lets you select the area that is used to map parametric space. Objects selects faces, edges, curves, or bodies to define the bounding box.Opposite Corner lets you select two points to define a bounding box. The parametric space is mapped to the planar surface.
Specify Point	Appears when Bounding Box Type is set to Opposite Corner.Lets you select a corner of the bounding box.See Point dialog box for more information.
Specify CSYS	Appears when Bounding Box Type is set to Opposite Corner.Lets you select the coordinate system used to define the spatial field.See CSYS dialog box for more information.
Select Object	Appears when Bounding Box Type is set to Objects.Lets you select an object to define the bounding box.When you define a field while creating a boundary condition, the dependent variable is defined for you.
Mapping	Appears when Type is set to Parametric Plane.Specifies the method to define the parametric plane.For Iso Sections, you define at least two lines of constant v. The user interface labels these lines as ISO Lines (u). The software then infers the lines of constant u from the lines of constant v.This method works well when the geometry is linear in the direction of lines of constant u. For Iso Lines, you define both the lines of constant u and v. The definition process is the same as it is for the iso-section mapping, except you explicitly define the lines of constant u rather than letting the software infer them.This method is necessary when the geometry contains curved faces in the direction of the lines of constant u.
ISO Lines (u)
Appears when Type is set to Parametric Plane.
Select Constant Objects	Lets you select the points or edges to define the lines of constant v.Note: If you are selecting edges to build your section, make sure the Snap Point option is turned off on the Top Border bar.When you select an edge, the point that is closest to your selection defines where u = 0.
Reverse Path Direction	Appears when Type is set to Parametric Plane and Mapping is set to Iso Sections.Reverses the u-direction.
Add New Set	Adds the selected point or edge to the section definition. A line titled Lattice Path appears in the List group.
ISO Lines (v)
Appears when Type is set to Parametric Plane and Mapping is set to Iso Lines.
Select Constant Objects	Lets you select the points or edges to define the lines of constant u.
Add New Set	Adds the selected point or edge to the section definition. A line titled Lattice Path appears in the List group.
Surface Validation
Appears when Type is set to Parametric Plane.
Preview	Displays the parametric coordinates of the vertices that define the parametric plane.
Flip U	Reverses the direction of all the lines of constant v. That is, the end of the lines where u = 0 become the ends where u = 1 and vice versa.
Flip V	Reverses the order of lines of constant v. That is, the line that defines v = 0 becomes the line that defines v = 1 and vice versa.
Swap U and V	Appears when Type is set to Parametric Plane and Mapping is set to Iso Lines.Redefines the u-direction as the v-direction and vice versa.

Definition page

Definition
Expressions table	Lists the dependent variables, expressions, value type (real or complex), and units.
Expressions box	Lets you type the value of the expression.To use a variable from the Filters area, double-click the desired variable in the Filters list. The variable is inserted at the current cursor location.
	Displays a menu of options that you can use to define the expression.See Additional magnitude options for more information.
Accept Edit	Accepts the expression text and adds it to the list.
Cancel Edit	Cancels the current edit and clears any selected variables in the Expressions box.
Filters
Filters list	Lists the variables that you can use to enter the expression.Double-click a variable in this list to add it to the expression.

Application Data page

Application Data
Appears when the independent domain includes frequency or time (Abaqus).
Available applications table	Lists the application attribute for the formula field. To create an application attribute for frequency, right-click a cell and choose Add Signal Attributes.To create an application attribute for time (Abaqus), right-click a cell and choose Add Abaqus Attributes. The Field Attributes dialog box appears. Set the values for time. For more information, see Field Attributes dialog box (Abaqus).To edit an application attribute, right-click the cell and choose Edit.To delete an application attribute, right-click the cell and choose Delete.

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Formula Field dialog box, Simcenter 3D 2021.1 Series

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