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60 lines
1.6 KiB
ReStructuredText
60 lines
1.6 KiB
ReStructuredText
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.. _group_of_underlying_elements_page:
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************************************
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Group Based on Nodes of Other Groups
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************************************
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To create a standalone group of entities basing on nodes of existing reference groups, in the **Mesh** menu select **Group of underlying entities**.
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The following dialog box will appear:
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.. image:: ../images/dimgroup_dlg.png
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:align: center
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In this dialog box specify
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* the resulting **Group name**,
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* the **Elements Type** of entities of the resulting group,
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* the criterion of inclusion of a mesh entity to the result group, which is **Number of common nodes** of the entity and the reference groups:
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* **All** - include if all nodes are common;
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* **Main** - include if all corner nodes are common (meaningful for a quadratic mesh)
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* **At least one** - include if one or more nodes are common
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* **Majority** - include if half or more nodes are common
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* select reference groups,
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* If **Include underlying entities only** option is activated an entity can be included if it is based on nodes of one element of a reference group.
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In the figure below, there are two reference Volume groups:
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.. image:: ../images/dimgroup_src.png
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:align: center
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.. centered::
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Reference groups
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In this case the following results for Faces, Edges and Nodes are obtained:
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.. image:: ../images/dimgroup_2d.png
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:align: center
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.. centered::
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Faces
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.. image:: ../images/dimgroup_1d.png
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:align: center
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.. centered::
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Edges
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.. image:: ../images/dimgroup_0d.png
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:align: center
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.. centered::
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Nodes
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**See Also** a sample TUI Script of a :ref:`tui_create_dim_group` operation.
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