Flexcom > Data Inputs > $MODES

Purpose

To specify modes to be replaced in SHEAR7 output.

Theory

Refer to Identifying Mixed Modes for further information on this feature.

Keyword Format

A block of two lines, repeated as often as necessary.

[TYPE=Plane Type]

Replaced Mode, Substitute Mode

The TYPE= line is only relevant for SCRs. Plane Type can be either IN PLANE or OUT OF PLANE.

Table Input

SCR Modes - Replace

Input:	Description
Type:	Whether the mode to be replaced is in-plane or out of plane.
Mode:	The mode to be replaced.
Replace With:	The mode that will replace the previously specified mode.

TTR Modes - Replace

Input:	Description
Mode:	The mode to be replaced.
Replace With:	The mode that will replace the previously specified mode.

Notes

(a)You use these tables when you want to 'replace’ rather than 'exclude’ a specific mode from SHEAR7 output. Replacing a mode means its natural frequency is retained in the SHEAR7 output, but its mode shape is replaced by that of another mode you nominate.