CONSTRUCT SET OPEN [Set_name]

           

This command is used to open a named set. FEMGV allows the user to have up to ten sets open simultaneously.

All CONSTRUCT SET APPEND commands and CONSTRUCT SET REMOVE commands will operate on all open sets unless specified otherwise.

A set is closed using the command CONSTRUCT SET CLOSE.

FEMGEN Command

CONSTRUCT SET OPEN [Set_Name [Set_type Part_type]]

Any points, lines, surfaces and bodies defined after this command will be appended to the newly opened set as well as to all other open sets.

Set_name = optional name of the set to be created. When the name is not given a default name of 'SEn' is used, where n is one greater than the number of automatically generated sets.

Set_type = Optional keyword, as shown below, which is used to define the type of a set when it is first opened.

Set_type Part_type Comments

BREP SURFACES 'Brep' sets contain an ordered list of surfaces. They are used in the definition of general bodies.

COMPLETE Not relevant By default sets will be created as

(the default) 'complete' so that they are completed when CONSTRUCT SET CLOSE is used.

INCOMPLETE Not relevant Sets that are 'incomplete' will not be subject to the completion process when the set is closed.

LIST POINTS 'List' sets will contain an ordered list of

LINES connected parts of the type specified. SURFACES BODIES

LOOP POINTS 'Loop' sets will contain an ordered list of

LINES parts of the given type that form a closed

SURFACES loop. Currently this is only valid for lines and

BODIES surfaces. See note 1

UNIQUE   Not relevant This command should not be utilised by the user; it is provided for the efficient reading of encoded archive files. It is documented for completeness.

Notes:

1.

The validity of sets used to define regions is checked when a LOOP set is closed as well as when an attempt is made to mesh a region. As part of the checking that takes place prior to a region being meshed all the sets used in the region definition will have their types changed to be LOOP LINES or LOOP SURFACES for swept regions. The type of a set can be confirmed with UTILITY TABULATE CONSTRUCT SETS.

Examples:

1.

CONSTRUCT SET OPEN SET3

Opens a set called SET3.

2.

CONSTRUCT SET OPEN HOLE1 LOOP LINES

Opens a set called HOLE1 to contain a loop of lines, provided that HOLE1 has not already been created.

3.

CONSTRUCT SET OPEN COVER LIST SURFACES

Opens a set called COVER to contain a list of surfaces only, provided that COVER has not already been created.

FEMVIEW Command.

CONSTRUCT SET OPEN Set_Name [Set_type]

The set name must be specified by the user. If it is a new set the user will be prompted to input some text describing the set.

Set_type = Optional keyword, as shown below, which is used to define the type of a set when it is first opened.

Set_type Comments

ELSET The set will be created as an element set and this is the default.

NODESET The set will be created as a node set.

Examples:

1.

CONSTRUCT SET OPEN SET3

Opens a set called SET3 which by default will be an element set.

2.

CONSTRUCT SET OPEN SOFFIT NODESET

Opens a set called SOFFIT which will be a node set.

See also the following commands

'VIEW GEOMETRY'
'VIEW MESH'
'GEOMETRY SURFACE REGION'
'MESHING GENERATE'