VEXT, NA1
, NA2
, NINC
, DX
, DY
, DZ
, RX
, RY
, RZ
Generates additional volumes by extruding areas.
NA1
, NA2
, NINC
Set of areas (NA1
to NA2
in
steps of NINC
) that defines the pattern to be extruded.
NA2
defaults to NA1
, NINC
defaults
to 1. If NA1
= ALL, NA2
and NINC
are
ignored and the pattern is defined by all selected areas. If NA1
=
P, graphical picking is enabled and all remaining command fields are ignored
(valid only in the GUI). A component name may also be substituted for NA1
(NA2
and NINC
are ignored).
DX
, DY
, DZ
Increments to be applied to the X, Y, and Z keypoint coordinates in the active coordinate system (DR, Dθ, DZ for cylindrical; DR, Dθ, DΦ for spherical).
RX
, RY
, RZ
Scale factors to be applied to the X, Y, and Z keypoint coordinates
in the active coordinate system (RR, Rθ, RZ for
cylindrical; RR, Rθ, RΦ for spherical). Note that the Rθ and RΦ scale factors are interpreted as angular offsets. For example, if CSYS = 1, RX
, RY
, RZ
input of (1.5,10,3) would scale the specified keypoints 1.5 times in the
radial and 3 times in the Z direction, while adding an offset of 10 degrees
to the keypoints. Zero, blank, or negative scale factor values are assumed
to be 1.0. Zero or blank angular offsets have no effect.
Generates additional volumes (and their corresponding keypoints, lines, and areas) by extruding and scaling a pattern of areas in the active coordinate system.
If element attributes have been associated with the input area via the AATT command, the opposite area generated by the VEXT operation will also have those attributes (i.e., the element attributes from the input area are copied to the opposite area). Note that only the area opposite the input area will have the same attributes as the input area; the areas adjacent to the input area will not.
If the areas are meshed or belong to meshed volumes, a 3-D mesh can
be extruded with this command. Note that the NDIV
argument
on the ESIZE command should be set before extruding the
meshed areas.
Scaling of the input areas, if specified, is performed first, followed by the extrusion.
In a non-Cartesian coordinate system, the VEXT command locates the end face of the volume based on the active coordinate system. However, the extrusion is made along a straight line between the end faces. Note that solid modeling in a toroidal coordinate system is not recommended.
Caution: Use of the VEXT command can produce unexpected results when operating in a non-Cartesian coordinate system. For a detailed description of the possible problems that may occur, see Solid Modeling in the Modeling and Meshing Guide.