MESHING SHAPE Part Projection

        

The MESHING SHAPE command is used to define the form of a surface by projection onto a shape or swept profile.

All nodes that belong to a named part are projected onto a specified analytical shape or onto a swept profile defined by a specified transformation. The projection is performed during the mesh operation initiated by the command MESHING GENERATE. Only nodes internal to a surface are projected; nodes on the border of a surface are not projected.

This command is needed to produce the required mesh when the default surface blending technique does not produce the desired effect, usually exhibited by a flattening out of the surface towards its centre..

Part = The name of the part to be projected. This must be the name of a surface, the name of a set or `ALL' where `ALL' means all surfaces in the model.

Projection Comments

Shape_name Specifies the analytical shape onto which the internal nodes of a surface are to be projected. (See note 1).

Transform_name Specifies the rotational transformation that will define the swept profile onto which the internal nodes of a surface are to be projected. (See note 2).

BOUNDARY Specifies that internal nodes of a surface are to be calculated by blending between the surface edges. This is the default. (See note 3).

Return Level: MESHING SHAPE

Notes:

1.

Projecting onto analytical shapes
The analytical shape onto which nodes of the surface are to be projected must have been defined previously using the command CONSTRUCT SHAPE.

2.

Projecting onto a swept profile
The position of each internal node of a surface is calculated by projection onto the surface formed by a rotational sweep of the first side of the surface. This command is provided purely to allow reading of FEMGEN `Archive' files that contain surfaces that were generated by sweeps.

3.

The BOUNDARY command
The `BOUNDARY' command is used to de-activate projection onto a shape or swept profile. This may be required if part of a swept surface is moved such that its position no longer corresponds to that defined by the sweep transformation.

Examples:

1.

MESHING SHAPE S1 CYL1

Project the nodes generated on surface S1 onto analytical shape CYL1.

See also the following commands

'CONSTRUCT SHAPE'
'VIEW SHAPE'