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3 cards from this section. Quick, good the night before a test.
Define what normal modes of vibration are.
Think about how a swing moves naturally.
What is a natural frequency?
Consider the rate of a pendulum's swing.
What are normal modes?
Think about how a swing moves freely.
True or False: Each normal mode has an associated natural frequency.
Consider how different musical notes correspond to different vibrations.
Given a three-storey MDOF system, compute the characteristic equation to determine the natural frequencies.
Focus on understanding how the equation is derived from modal analysis.
Analyze the effect of adding damping to an already calculated modal response. Discuss how it alters mode shapes.
Consider how energy dissipation might affect vibrations.
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