Practice Special Case: Undamped Systems - 17.9 | 17. Decoupling of Equations of Motion | Earthquake Engineering - Vol 2
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Special Case: Undamped Systems

17.9 - Special Case: Undamped Systems

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What equation represents the motion of undamped systems?

💡 Hint: Think about how the system behaves without damping.

Question 2 Easy

What is Duhamel’s Integral used for?

💡 Hint: Consider its application in dynamics.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the characteristic form of modal equations for undamped systems?

q¨(t) + ζω²q(t) = F∗(t)
q¨(t) + ω²q(t) = F∗(t)
q¨(t) = F∗(t)

💡 Hint: Consider how damping changes equation behavior.

Question 2

True or False: Duhamel’s Integral can be applied only to damped systems.

True
False

💡 Hint: Think about where it is typically applied.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a harmonic oscillator represented by the equation q¨(t) + 25q(t) = 5, solve for q(t) using Duhamel’s Integral given an initial condition of q(0)=0 and q˙(0)=0.

💡 Hint: Map out the steps of Duhamel’s process carefully, ensuring initial conditions are incorporated.

Challenge 2 Hard

For an undamped spring-mass system with a loading force F(t) = 10sin(ωt), derive the expression for the modal response q(t) using the Laplace Transform.

💡 Hint: Remember to handle 's' carefully and recall the properties of inverse transforms.

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