Practice Free Vibration And Mode Shapes (15.1) - Mode Shapes - Earthquake Engineering

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10 questions

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6 sample questions

Question 1.
Define free vibration.
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Think about motion after a swing is pushed.
Question 2.
What corresponds to each mode shape?
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How many frequencies are in a multi-degree system?
3Question 3.
What is free vibration?
- True
- False
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Think about a system left to move after being disturbed.
4Question 4.
Each mode shape in a structure corresponds to:
- One natural frequency
- Several natural frequencies
- No frequencies
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How many frequencies match up with each individual deformation shape?
Question 5.
Analyze a 4-DOF cantilever beam subjected to an initial disturbance and determine the mode shapes and corresponding natural frequencies.
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Consider utilizing numerical methods like Rayleigh-Ritz for complex structures.
Question 6.
In the design of a new building, how would you mitigate the effects of resonance identified from mode shapes? Consider the material properties and structural reinforcement strategies.
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Think about how materials can affect vibrations in a structure.

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