This functionality allows transforming standard meshes (or sub-meshes) to quadratic and vice versa. See Adding quadratic elements for more information about quadratic meshes. Note 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.
To produce a conversion:
From the Modification menu choose Convert to/from Quadratic Mesh item , or click "Convert to/from quadratic" button in the toolbar.
The following dialog box will appear:
In this dialog box specify:
if it is necessary to convert a standard mesh to quadratic or a quadratic mesh to standard. Note that the choice is available only if the selected mesh (or sub-mesh) contains both quadratic and linear elements, else the direction of conversion is selected automatically.
See Also a sample TUI Script of a Convert to/from quadratic operation.