ABAQUS Keywords Reference Manual  

*RETAINED EIGENMODES
Select the modes to be retained in a substructure generation analysis.

This option selects the modes to be used in a substructure generation analysis. The modes must be extracted in a prior *FREQUENCY step and will include residual modes if they were activated. If this option is not used, no modes will be used.

Product: ABAQUS/Standard  

Type: History data

Level: Step  

Reference:

Optional parameter:

GENERATE

If this parameter is included, each data line should give a first mode, ; a last mode; ; and the increment in mode numbers between these modes, i. Then, all modes going from to in steps of i will be added to the set. i must be an integer such that is a whole number (not a fraction).

Data lines if the GENERATE parameter is omitted: 

First line:

  1. List of modes to be used.

Repeat this data line as often as necessary. Up to 16 entries are allowed per line.

Data lines if the GENERATE parameter is included: 

First line:

  1. First mode number.

  2. Last mode number.

  3. Increment in mode numbers between modes. The default is 1.

Repeat this data line as often as necessary.