DLOAD

Bulk Data Entry Defines a dynamic loading condition for frequency response problems as a linear combination of load sets defined via RLOAD1 and RLOAD2 entries, or for transient problems as a linear combination of load sets defined via TLOAD1 and TLOAD2 entries, or acoustic source ACSRCE entries.

Attention: Valid for Implicit and Explicit Analysis

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
DLOAD SID S S1 L1 S2 L2 S3 L3
S4 L4 etc etc etc etc etc etc

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
DLOAD 5 1.0 2.0 101 2.0 102 2.0 103
-2.0 201

Definitions

Field Contents SI Unit Example
SID Load set identification number.

No default (Integer > 0)
S Scale factor.

No default (Real)
S# Scale factors.

No default (Real)
L# Load set identification numbers of RLOAD1 and RLOAD2 or TLOAD1 and TLOAD2, or ACSRCE Bulk Data Entries.

No default (Integer > 0)

Comments

  1. Dynamic load sets must be selected in the I/O Options or Subcase Information sections with DLOAD=SID. (DLOAD I/O Options and Subcase Information Entry).
  2. The load vector being defined by this entry is given by:
    { P } = S ∑ i Si { P i }
  3. Each L# must be unique from any other L# on the same entry.
  4. SID must be unique from all RLOAD1 and RLOAD2 or TLOAD1 and TLOAD2 entries.
  5. A DLOAD entry may not reference a set identification number defined by another DLOAD entry.
  6. RLOAD1 and RLOAD2 loads and TLOAD1 and TLOAD2 loads may be combined only through the use of the DLOAD entry.
  7. This card is represented as a load collector in HyperMesh.