FREQ

Bulk Data Entry Defines a set of frequencies to be used in the solution of frequency response problems.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
FREQ SID F1 F2 F3 F4 F5 F6 F7  
  F8 etc etc etc etc etc etc etc  

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
FREQ 3 7.0 12.56 13.99 23.4 23.34      

Definitions

Field Contents SI Unit Example
SID Identification number.

No default (Integer > 0)

  
F# Frequency value. The units for F# are cycles per unit time.

No default (Real ≥ 0.0)

  

Comments

  1. FREQ entries must be selected with the I/O Options or Subcase Information command FREQUENCY = SID.
  2. All FREQi entries with the same set identification numbers will be used. Duplicate frequencies will be ignored. f N and f N − 1 are considered duplicated if: (1)
    | f N − f N − 1 | < DFREQ * | f MAX − f MIN |
    Where,
    DFREQ
    User parameter with a default of 10-5 * f M A X
    f M I N
    The maximum and minimum excitation frequencies of the combined FREQi entries
  3. This card is represented as a load collector in HyperMesh.