8.9 - Base Excitation and Response
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Practice Questions
Test your understanding with targeted questions
What is base excitation in structural dynamics?
💡 Hint: Think about an earthquake and how the ground moves.
Define relative displacement.
💡 Hint: Consider how a building moves compared to the ground underneath it.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the equation mx¨(t) + cx˙(t) + kx(t) = -my¨(t) represent?
💡 Hint: Look for the part addressing ground movement.
True or False: Relative displacement considers only the motion of the structure.
💡 Hint: Think about how displacement measurements are made.
1 more question available
Challenge Problems
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A building experiences a base excitation due to an earthquake where the ground accelerates at 2 m/s². If the mass of the building is 1000 kg, calculate the dynamic force exerted on the building.
💡 Hint: Use the mass and acceleration to find the force.
Discuss the implications of phase angle in a building designed in an earthquake-prone zone. What considerations should be factored into its design?
💡 Hint: Think about ways to reduce impact during resonance.
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