3D Connexion Version 6.6

*RETAINED EIGENMODES

17.16 *RETAINED EIGENMODES: Select the modes to be retained in a substructure

generation analysis.

This option selects the modes to be used in a substructuregeneration analysis. Themodes 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:

•“Deﬁning substructures,” Section10.1.2 of the ABAQUS Analysis User’s Manual

Optional parameter:

GENERATE

If this parameter is included, each data line should give a ﬁrst mode, ; a last mode; ;andthe

increment in mode numbers between these modes, i. Then, all modes going from to insteps

of iwill be added to the set. imust be an integer such that is a whole number (not a

fraction).

Data lines if the GENERATE parameter is omitted:

First line:

1. Listof modes to be used.

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

Data lines if the GENERATEparameter is included:

First line:

1. First mode number.

2. Last mode number.

3. Incrementin mode numbers between modes. The default is 1.

Repeat this data line as often as necessary.

17.16–1

ABAQUS Version 6.1 Module: ID:

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