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 C1 IDV2 C2  
  IDV3 C3 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

  1. DLINK defines the relationship.(1)
    DDVID = C 0 + CMULT ∑ i Ci * IDVi

    This capability allows physical and non-physical design variables to be related such as shell thickness and interpolating functions.

  2. CMULT and Ci can be used together to provide a simple means of scaling.
  3. This card is represented as an optimization design variable link in HyperMesh.