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normal mode shape

Standard

ECSS-E-ST-32-11C - Modal survey assessment (31 July 2008)

Definition

mode shapes where all parts of the structure are moving either in phase, or 180° out of phase with each other

Notes

NOTE 1 Normal mode shapes can be considered to be standing waves with fixed node lines.
NOTE 2 For proportionally damped systems, the normal mode shapes can be derived from the complex mode shapes by re-scaling.

Relations

ECSS-E-ST-70-11C — mode
ECSS-E-ST-32C Rev. 1 — structure

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