MPC – Multipoint Constraint
Defines a multipoint constraint equation of the form.
|
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
|
MPC |
SID |
G |
C |
A |
G |
C |
A |
blank |
|
|
|
blank |
G |
C |
A |
-etc.- |
|
|
blank |
|
|
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
|
MPC |
3 |
28 |
3 |
6.2 |
2 |
2 |
4.29 |
|
|
|
|
|
1 |
4 |
-2.91 |
|
|
|
|
|
|
Field |
Contents |
|
SID |
Set identification number. (Integer > 0) |
|
G |
Identification number of grid or scalar point. (Integer > 0) |
|
C |
Component number. (Integer zero or blank for scalar points, or any one of the digits 1-6 for grid points. The component refers to the coordinate system referenced by the grid point.) |
|
A |
Coefficient. (Real; the first A must be non-zero) |
The first coordinate in the sequence is assumed to be the dependent coordinate. A dependent degree of freedom assigned by one MPC entry cannot be assigned dependent by another MPC entry or by a rigid element.
When the I/O option SPSYNTAX is set to CHECK (default) or STRICT, it is required for grid/component pairs (G#/C#) that the component be 0 or blank when the grid reference is a scalar point (SPOINT), and that the component be > 1 when the grid reference is a structural grid point (GRID). When SPSYNTAX is set to MIXED, it is allowed for grid/component pairs (G#/C#) that the grid reference be either a scalar point (SPOINT) or a structural grid point (GRID) when the component is 0, 1 or blank; interpreting all of these as 0 for scalar points and as 1 for structural grids. When the component is greater than 1, the grid reference must always be a structural grid (GRID).
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Guidelines for Bulk Data Entries
Alphabetical List of Bulk Data Entries