FATSEQ
Bulk Data Entry Defines a loading sequence for a Fatigue Analysis.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| FATSEQ | ID | ||||||||
| FID1 | N1/T1 | FID2 | N2/T2 | FID3 | N3/T3 | FID4 | N4/T4 | ||
| FID5 | N5/T5 |
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| ID | Each
FATSEQ card must have a unique ID.
FATSEQ Subcase Information Entry may
reference this identifier. Alternatively, this ID may be referenced
by other FATSEQ definitions. No default (Integer > 0) |
|
| FID# | Identification number of
FATSEQ or FATEVNT entry. 2 No default (Integer > 0) |
|
| N# | Number of times this
loading sequence or event is repeated. Repeat number
(N#) has no effect on the results of a Factor
of Safety (FOS) analysis. For Sine-Sweep Fatigue Analysis, N# represents the number of sweeps of the corresponding FID# reference. Default = 1 (Integer > 0) |
|
| T# | Total Exposure time of the
initial source in the Random Loading Sample. 3 For Sine-Sweep Fatigue Analysis, T# represents the time in seconds, if only a single frequency is considered (or sweep rate is set to 0.0). Default = 1.0 (Real > 0.0) |
Comments
- Identification numbers of FATSEQ and FATEVNT entries share the same ID pool.
- Typically, a fatigue subcase should reference the same subcase types through FATSEQ and FATEVNT entries. Some exceptions are listed in FATEVNT, comment 3.
- The total exposure time is defined for individual FATEVNT’s using the corresponding T# fields.
- This card is represented as a load collector in HyperMesh.