Dynamic Load Combination (Superposition)
Description: Defines a dynamic loading condition for transient response problems as a linear combination of load sets defined via TLOAD1 or TLOAD2 entries.
Format:
Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| SID | Load set identification number. | Integer > 0 | Required |
| S | Scale factor. | Real | Required |
| Si | Scale factors. | Real | Required |
| Li | Load set identification numbers defined via entry types enumerated above. | Integer > 0; SID ≠ Li | Required |
Remarks:
- The load vector defined is given by:
- Each Li must be unique from any other Li on the same entry.
- Dynamic load sets must be selected in the Case Control Section with DLOAD = SID.
- A DLOAD entry may not reference a set identification number defied by another DLOAD entry.
- TLOAD1 and TLOAD2 loads may be combined only through the use of the DLOAD entry.
- SID must be unique for all TLOAD1 and TLOAD2 entries.