DLINK

Bulk Data Entry Defines a link between one design variable and one or more other design variables.

Format


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
DLINK	`ID`	`DDVID`	`C0`	`CMULT`	`IDV1`	`C`	`IDV2`	`C`
	`IDV3`	`C`	etc.

Example


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
DLINK	55	3	0.2	0.45	5	2.0	10	5.5
	15	-3.0

Definitions


Field	Contents	SI Unit Example
`ID`	Unique DLINK identification number. (Integer > 0)
`DDVID`	Dependent Design Variable identification number. (Integer > 0)
`C0`	Constant. Default = 0.0 (Real)
`CMULT`	Constant multiplier. Default = 1.0 (Real)
`IDVi`	Independent Design Variable identification number. Can occur on the same DLINK entry only once. (Integer > 0)
`Ci`	Coefficient multiplier for `IDVi`. (Real)

Comments

DLINK defines the relationship.
$DDVID = C 0 + CMULT \sum_{i} Ci * IDVi$
This capability allows physical and non-physical design variables to be related such as shell thickness and interpolating functions.
CMULT and Ci can be used together to provide a simple means of scaling.
This card is represented as an optimization design variable link in HyperMesh.