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Modal analysis question

Modal analysis question

(OP)
Hi, I have a question:
In modal analysis, to get the displacement of a story we combine story displacements obtained from each mode.what is the reason behind this?

RE: Modal analysis question

When waves of different periods add constructively, you get a bigger wave.

Reaction to change doesn't stop it smile

RE: Modal analysis question

To the OP, a course on vibration analysis should have been a requirement in your line of work.

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