LOAD

Subcase Information Entry The LOAD command can be used to select a load set to be applied to a particular subcase.

Attention: Valid for Implicit and Explicit Analysis

Format

LOAD = option

Definitions

Argument Options Description
option <SID>

No default
SID
Set identification of a LOAD Bulk Data Entry or, if a LOAD Bulk Data Entry does not exist with this SID, the set identification of FORCE, FORCE1, MOMENT, MOMENT1, PLOAD, PLOAD1, PLOAD2, PLOAD4, GRAV, RFORCE, ACCEL, ACCEL1, ACCEL2, and SPCD Bulk Data Entries.

Comments

  1. Only one LOAD entry can be present for each subcase.
  2. A METHOD entry cannot be present in the same subcase definition as a LOAD entry.
  3. If the SID referenced by the LOAD Subcase Information Entry matches with the SID defined for a LOAD Bulk Data Entry, the information on this entry alone is selected.
  4. Depending on the analysis type, LOADADD/LOAD will be interpreted as:
    Analysis Type
    Application Method
    Implicit (static/transient) Analysis
    • Both force and enforced motion (SPCD) are applied as a ramp-up function. This means that 100% of load is applied only at the end of the subcase.
    Explicit Dynamic Analysis
    • Force is applied as step function. This means that 100% of the load is applied at the beginning of the subcase.
    • Enforced motion (SPCD) is applied as ramp-up function. This means that 100% of the load is applied only at the end of the subcase.