Practice Seismic Excitation As Base Motion (6.5) - Equations of Motion of SDOF System for Mass as well as Base Excitation

Practice: Seismic Excitation as Base Motion

Lesson 6.5Equations of Motion of SDOF System for Mass as well as Base Excitation

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10 questions

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6 sample questions

Question 1.
Define seismic excitation.
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Think about how earthquakes affect buildings.
Question 2.
What is relative displacement?
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Consider how the building's motion relates to the ground.
3Question 3.
What does seismic excitation refer to?
- Ground shaking
- Wind forces
- Mass movement
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Remember the context of earthquakes.
4Question 4.
True or False: Absolute displacement includes both relative displacement and ground displacement.
- True
- False
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Think about how each type of displacement contributes.
Question 5.
An earthquake causes the ground to move up and down by 4 inches. If a structure moves in a way so that its relative displacement during the same time is 1 inch up, what is its absolute displacement?
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Add the ground displacement to the relative displacement.
Question 6.
Describe the effects of neglecting base motion in structural modeling during an earthquake. What potential risks could this introduce?
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Consider the implications of ignoring external forces acting on buildings.

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