Practice Base Isolation And Tuned Mass Dampers (6.18.3) - Equations of Motion of SDOF System for Mass as well as Base Excitation

Practice: Base Isolation and Tuned Mass Dampers

Lesson 6.18.3Equations of Motion of SDOF System for Mass as well as Base Excitation

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10 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is base isolation?
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Consider what separates the structure from the ground.
Question 2.
What does a tuned mass damper do?
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Think of how a tuning fork works.
3Question 3.
What is the primary function of base isolation?
- To enhance aesthetic appeal
- To reduce seismic forces on buildings
- To increase structural stiffness
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Think about how it protects the structure.
4Question 4.
True or False: A tuned mass damper is used to increase vibrations in a structure.
- True
- False
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Consider the purpose of a damper.
Question 5.
Given a hotel building in a highly seismic zone, propose a design strategy including base isolation and TMD. Analyze the impacts on safety and costs.
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Consider both immediate and long-term safety benefits.
Question 6.
Calculate the effective damping ratio of a tuned mass damper if the primary structure has a natural frequency of 1 Hz and the TMD is tuned to 2 Hz.
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Use formulas from vibration analysis to relate damping ratios.

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