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MESHING OPTIONS MIDNODES Control

    

This command controls the calculation of the position of mid-side nodes.


Control Comments
MAPPED all mid-side nodes will be subject to mapping on to the actual shape of
the surface. This is the default, and should be used for shells and solids,
but is not actually necessary for swept or projected surfaces where all the
generated nodes will automatically be placed on the surface.
EXACT all mid-side nodes will be placed exactly half-way between the corner
nodes.
ON-LINE mid-side nodes on the bounding geometric lines of a surface will be
placed on the actual bounding lines, but the internal mid-side nodes
(ie those not on bounding geometric lines) will be placed on straight
lines joining the corner nodes of elements. This is useful in 2-D when
the internal mesh is distorted because of topological rather than
geometric considerations.


 
Figure 2.95: Mapped mid-side nodes for QU8 elements
\begin{figure} \centerline{ \psfig {figure=diagrams/mid1.ps,width=2.5in} }\end{figure}


 
Figure 2.96: Exact mid-side nodes for QU8 elements
\begin{figure} \centerline{ \psfig {figure=diagrams/mid3.ps,width=2.5in} }\end{figure}


 
Figure 2.97: Online mid-side nodes for QU8 elements
\begin{figure} \centerline{ \psfig {figure=diagrams/mid2.ps,width=2.5in} }\end{figure}

Examples:

1.
MESHING OPTIONS MIDNODES MAPPED

Specifies that all mid-side nodes will be subject to mapping on to the actual shape of the surface.

See also the following commands

'LABEL MESH'
'VIEW GEOMETRY'
'VIEW MESH'

next up previous contents index
Next: MESHING OPTIONS NODE Start_node Up: MESHING OPTIONS Previous: MESHING OPTIONS LOCK Part

Femsys Limited
1st October 1999