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Unformatted text preview: 2009-03-23 Review Questions: Chap. 3
1. What is the basis for expressing the response of a system under periodic excitation as a summation of several harmonic responses? 2. What is the nonperiodic force? Give an example. 3. What is the nonstationary force? Give examples. 4. Can the transient force be regarded as a kind of nonstationary force? Give examples of transient force. 5. Indicate some methods for finding the response of a system under nonperiodic forces. 6. What is the definition of impulse response function? 7. What is the Duhamel integral? What is its use? 2 Review Questions: Chap. 3
8. How are the initial conditions determined for a single degree of freedom system subject to an impulse at t=0? How do you utilize the orthogonality condition in the vibration analysis related to the Fourier series? What is the Gibbs' phenomenon? What is the physical meaning of Fourier transform? What is the response spectrum? How is the L l H i th Laplace t transform of a function x(t) f f f ti (t) defined? What are the advantages of the Laplace transformation method? 3 9. 10. 11. 12. 13. 13 14. 1 2009-03-23 Review Questions: Chap. 3
15. How many resonant conditions are there when the external force is not harmonic? 16. How do you compute the frequency of the first harmonic of a periodic force? 17. What is the relation between the frequencies of higher harmonics and the frequency of the first harmonic for a periodic excitation? 18. How can you design an isolator for a periodic force? 4 2 ...
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This note was uploaded on 02/11/2010 for the course MECHANICAL ms316 taught by Professor Abduljaba during the Spring '09 term at Kalamazoo.
- Spring '09