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51 lines
1.8 KiB
ReStructuredText
51 lines
1.8 KiB
ReStructuredText
.. _convert_to_from_quadratic_mesh_page:
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****************************************
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Convert to/from Quadratic Mesh
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****************************************
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This functionality allows transforming linear meshes (or sub-meshes) to quadratic and vice versa.
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.. Note::
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that conversion of a sub-mesh most probably will produce a non-conformal mesh. Elements on the boundary between quadratic and linear sub-meshes become (or remain) quadratic.
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See :ref:`adding_quadratic_elements_page` for more information about quadratic meshes.
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*To produce a conversion:*
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.. |img| image:: ../images/image154.png
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#. Select a mesh or a sub-mesh in the Object Browser or in the Viewer.
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#. From the Modification menu or from the contextual menu in the Object Browser choose **Convert to/from Quadratic Mesh** item, or click *"Convert to/from quadratic"* button |img| in the toolbar.
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The following dialog box will appear:
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.. image:: ../images/convert.png
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:align: center
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#. In this dialog box specify:
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* If it is necessary to convert a linear mesh to quadratic or a quadratic mesh to linear. **Convert to bi-quadratic** creates some types of quadratic elements with additional central nodes: TRIA7, QUAD9 and HEXA27 elements instead of TRIA6, QUAD8, and HEXA20 elements respectively.
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* If it is necessary to place **medium nodes** of the quadratic mesh **on the geometry** (meshed shape). This option is relevant for conversion to quadratic provided that the mesh is based on a geometry (not imported from file).
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.. image:: ../images/image156.gif
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:align: center
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.. centered::
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Linear mesh (coarse mesh on a torus)
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.. image:: ../images/image155.gif
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:align: center
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.. centered::
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Quadratic mesh
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#. Click the **Apply** or **Apply and Close** button.
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**See Also** a sample TUI Script of a :ref:`tui_quadratic` operation.
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