The geometry operators enable visualization of element, material, and property data as scalars and vectors.
The Model library contains the following Geometry operators:
Calculates the shell area.
Inputs
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elems: an element entity table.
coords: a coordinate vector value table.
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Outputs
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answer: a scalar value table.
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Notes
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| • | Only shell elements are processed. |
| • | If the answer scalar table is bound to nodes, the nodal shell area will be calculated; otherwise, the shell area will be calculated. |
| • | All vectors in coords must be relative to the global system. |
| • | Nodal shell area is the sum of element area divided by the number of nodes per element for all adjacent elements. |
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Expression Builder
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Area(elems,coords)
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XML Example
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<call name="Area" elems="elem_tab" coords="coord_tab"
answer="ans_tab" />
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Calculates the solid/shell volume.
Inputs
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elems: an element entity table.
thickness: shell thickness scalar table.
parts: a part entity table.
coords: a coordinate vector value table.
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Outputs
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answer: a scalar value table.
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Notes
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| • | Only shell and solid elements are processed. |
| • | thickness and parts arguments default to NULL. |
| • | If thickness and/or parts are NULL, only solid elements will be processed. |
| • | All vectors in coords must be relative to the global system. |
| • | Composite thickness is unsupported at this time. |
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Expression Builder
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Volume(thickness,parts,coords,elems)
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XML Example
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<call name="Volume" elems="elem_tab" coords="coord_tab"
parts="part_tab" thickness="thickness_tab"
answer="ans_tab" />
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Transforms a vector relative to the elemental system to the global system.
Inputs
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elems: an element entity table.
coords: a coordinate vector value table.
vector: a vector relative to the elemental system.
elemSysMethod: the element system method for the model. Valid values are "Bisect" (default value) or "Midpoint" (to be used for all Radioss models).
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Outputs
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answer: an elemental vector value table.
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Notes
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| • | All vectors in coords must be relative to the global system. |
| • | The vector string is a space-separated list of 3 scalar values. |
| • | elemSysMethod is only applicable for Element-bound vectors and is specific to quadrilateral elements only. |
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Expression Builder
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ElementAxisVector(elems, coords, vector, elemSysMethod)
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XML Example
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<call name="ElementAxisVector" vector="1 0 0"
coords="coord_tab" elems="elem_tab"
answer="ans_tab" />
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Transforms a vector relative to the element material system to the global system.
Inputs
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elems: an element entity table.
coords: a coordinate vector value table.
systems: a system entity table.
mattheta: a scalar table of material angle offsets (default=”null”).
parts: a part entity table (default=”null”).
props: a property entity table (default=”null”).
vector: a vector relative to the material system.
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Outputs
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answer: an elemental vector value table.
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Notes
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| • | All vectors in coords must be relative to the global system. |
| • | Solid material systems require part and property tables, and both must be passed. |
| • | Two methods for material orientation are supported: an angle offset relative to the element system, and the projection of a system onto the surface of the shell. |
| • | The vector string is a space-separated list of 3 scalar values. |
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Expression Builder
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MaterialAxisVector (elems, coords, systems, mattheta, parts, props, vector)
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XML Example
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<call name="MaterialAxisVector" vector="1 0 0"
coords="coord_tab" systems ="sys_tab" elems="elem_tab"
mattheta="theta_tab" answer="ans_tab" />
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Transforms a vector relative to the element ply system to the global system.
Inputs
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elems: an element entity table.
coords: a coordinate vector value table.
systems: a system entity table.
parts: a part entity table.
mattheta: an elemental scalar table of material angle offsets.
plytheta: a property scalar table of ply angle offsets.
vector: a vector relative to the material system.
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Outputs
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Answer: an elemental vector value table.
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Notes
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| • | All vectors in coords must be relative to the global system. |
| • | Only shells will be processed by this operator. |
| • | The vector string is a space-separated list of 3 scalar values. |
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Expression Builder
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PlyAxisVector(coords, elems, systems, parts, mattheta, plytheta, vector)
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XML Example
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<call name="PlyAxisVector" vector="1 0 0"
coords="coord_tab" systems ="sys_tab"
elems="elem_tab" parts="part_tab"
mattheta="mat_theta_tab" plytheta="ply_theta_tab"
answer="ans_tab" />
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Creates a scalar value table from entity IDs.
Inputs
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src: an entity table.
The following input is valid only if the src table is nodal:
system: reference, analysis, or null (default = “null”).
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Outputs
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Answer: a scalar table containing the IDs attached to the entities in src.
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Notes
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| • | It is necessary to use ScalarID in conjunction with binding change operators to visualize property or material IDs. |
| • | To create scalars of nodal reference system IDs, set system to ‘reference’. |
| • | To create scalars of nodal analysis system IDs, set system to ‘analysis’. |
| • | To create scalars of nodal IDs, leave system unset or specify ‘null’. |
| • | In the case when processing material or property IDs for composites, it is necessary to inherit the layer list from a model table that contains layer data (for example, inherit=”PCOMP_THETA” with Nastran) on the dataset. |
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Expression Builder
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ScalarID(src, system)
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XML Example
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<call name="ScalarID" src="part_tab"
answer="ans_tab" />
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