MBDCRV
Bulk Data Entry Defines an ordered list of grids as a Multibody Deformable Curve.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
MBDCRV | DCID | ENDTYPEL | LAMBDAL | ENDTYPER | LAMBDAR | NSEG | |||
G1 | G2 | G3 | etc |
Example
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
MBDCRV | 1 | NATURAL | CANTILEVER | 0.5 | 100 | 5 | |||
201 | 202 | 203 | 204 | 205 |
Definitions
Field | Contents | SI Unit Example |
---|---|---|
DCID | Curve identification
number. No default (Integer > 0) |
|
ENDTYPEL | Select from.
|
|
LAMBDAL | This parameter is only
applicable for CANTILEVER type end condition. It
should be left blank for other end conditions. A real valued parameter in the interval [0,1] that controls the left end condition for CUBIC spline interpolation. A value of 0 implies NATURAL end condition while a value of 1 implies PARABOLIC end condition. Default = 0.0 (0.0 < Real < 1.0) |
|
ENDTYPER | Select from:
|
|
LAMBDAR | This parameter is only
applicable for CANTILEVER type end condition. It
should be left blank for other end conditions. A real valued parameter in the interval [0,1] that controls the left end condition for CUBIC spline interpolation. A value of 0 implies NATURAL end condition while a value of 1 implies PARABOLIC end condition. Default = 0.0 (0.0 < Real < 1.0) |
|
NSEG | Number of segments used to
visualize the deformable curve in animation. No default (Integer > 0) |
|
G1, G2, G3, … | Ordered list of grid IDs defining the curve. |
Comments
- The deformable curve is generated using
the CUBIC spline interpolation which requires assumptions on the second
derivative of the interpolating function at either end of the curve. The
keywords NATURAL, PARABOLIC,
PERIODIC and CANTILEVER represent the four
standard assumptions defined as:
=0.0 implies NATURAL (or free) end conditions and =1.0 implies PARABOLIC end conditions.
- This card is represented as a set in HyperMesh.