DLINK2
Bulk Data Entry Defines a link of one design variable to one or more other design variables defined by a DEQATN card. The equation inputs come from the referenced DESVAR values and the constants defined on the DTABLE card.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
DLINK2 | ID | DDVID | EQUID or FUNC | ||||||
DESVAR | DVID1 | DVID2 | DVID3 | DVID4 | DVID5 | DVID6 | DVID7 | ||
DVID8 | DVID9 | etc. | |||||||
DTABLE | LABL1 | LABL2 | LABL3 | LABL4 | LABL5 | LABL6 | LABL7 | ||
LABL8 | etc. |
Example
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
DLINK2 | 201 | 7 | 101 | ||||||
DESVAR | 5 | 6 |
Associated Cards
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
DESVAR | 5 | X | 0.0 | -1.0 | 1.0 | ||||
DESVAR | 6 | Y | 0.0 | -1.0 | 1.0 | ||||
DESVAR | 7 | R | 0.0 | -1.0 | 1.0 | ||||
DEQATN | 101 | RADIUS(X,Y) = SQRT(X**2+Y**2) |
Definitions
Field | Contents | SI Unit Example |
---|---|---|
ID | Relationship identity.
Each DLINK2 entry should have a unique ID. No default (Integer > 0) |
|
DDVID | Dependent Design Variable
identification number. (Integer > 0) |
|
EQID | Equation ID of
DEQATN data. No default (Integer > 0) |
|
FUNC | Function to be applied to
the arguments.2 (Character) |
|
DESVAR | Indicates DESVAR ID numbers follow. | |
DVIDi | DESVAR
ID. No default (Integer > 0) |
|
DTABLE | Indicates DTABLE labels follow. | |
LABLi | Constant label on
DTABLE card. No default (Character) |
Comments
- The main application for this entity is to link shape design variables with each other through equations. DVPREL2 should be used for linking sizing design variables with each other through equations.
- The following functions can be used instead
of an EQUID. If FUNC is used, the
DEQATN entry is no longer needed. The functions are
applied to all arguments on the DLINK2 regardless of their
type.
Function Description Formula SUM Sum of arguments AVG Average of arguments SSQ Sum of square of arguments RSS Square root of sum of squares of arguments MAX Maximum of arguments MIN Minimum of arguments SUMABS Sum of absolute value of arguments AVGABS Average of absolute value of arguments MAXABS Maximum of absolute arguments MINABS Minimum of absolute value of arguments RMS Root mean square value of arguments - This card is represented as an design variable link in HyperMesh.