18.1 - Basics of Structural Vibrations
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Practice Questions
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What is free vibration?
💡 Hint: Think about what happens when someone shakes a building and then stops.
Define forced vibration.
💡 Hint: Consider what happens to a building during an earthquake.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What occurs during free vibration?
💡 Hint: Think about shaking a structure and then letting it go.
True or False: Natural frequencies are unique to each structure.
💡 Hint: Consider how different types of buildings react uniquely to dynamic loads.
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Challenge Problems
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A structure is designed with a natural frequency of 2 Hz. If an earthquake produces waves at 2 Hz, discuss the risks involved.
💡 Hint: Consider how matching frequencies might compound the effects of dynamic loads.
Consider a building designed with a specific distribution of mass across its floors. Discuss how uneven mass distribution could affect its natural frequency.
💡 Hint: Think about how a seesaw might tilt differently depending on weight placements.
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