Quiz - Harmonic Analysis | ANSYS Innovation Courses

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Question 1 of 10

1. Question
Name a material attribute that will make the calculated response to be out of phase with the excitation.
- 1) Stiffness
- 2) Damping
- 3) Density
- 4) Yield strength
Question 2 of 10

2. Question
What are the two types of harmonic response analysis?
- 1) Full and Mode Superposition (MSUP)
- 2) Implicit and Explicit
- 3) Rigid body dynamics and Transient structural analysis
- 4) Out-of-phase harmonic and In-phase harmonic
Question 3 of 10

3. Question
What is true about the phase angle in a harmonic analysis?
- 1) It describes the time lag between two response quantities such as between displacements at two locations in the structure
- 2) It depends on damping in the system
- 3) It depends on relative phasing between different applied loads
- 4) All of the above
Question 4 of 10

4. Question
True or False: Harmonic analysis computes responses to forces that are sinusoidal. It requires all the applied forces act at the same frequency.
- 1) TRUE
- 2) FALSE
Question 5 of 10

5. Question
True or False: In a harmonic analysis, the response of the structure can be at a frequency that is different from the applied load
- 1) TRUE
- 2) FALSE
Question 6 of 10

6. Question
When sweeping excitation over a range of frequencies that encompasses a natural frequency, what are the two main effects that increased damping has on the frequency response?
- 1) There will be a reduction in the amplitude of the peak response and the peak will become broader
- 2) There will be a reduction in the amplitude of the peak response and the peak will become narrower
- 3) There will be an increase in the amplitude of the peak response and the peak will become narrower
- 4) There will be an increase in the amplitude of the peak response and the peak will become broader
Question 7 of 10

7. Question
For a single degree of freedom spring-mass damper, after considering damping, the natural frequency will:
- 1) Stay the same
- 2) Decrease
- 3) Increase
- 4) Depending on the ratio of natural frequency and damping
Question 8 of 10

8. Question
Ture or False: A harmonic excitation does not need to be sinusoidal: any form of cyclic loading can be categorized as harmonic excitation.
- 1) TRUE
- 2) FALSE
Question 9 of 10

9. Question
What is the main variable of a harmonic excitation?
- 1) Frequency
- 2) Amplitude
- 3) Phase angle
- 4) All of the above
Question 10 of 10

10. Question
Which of the following statements is true?
- 1) The amplitude in a harmonic excitation refers to the peak magnitude of the forcing excitation. The motion excites in only positive direction
- 2) Phase angle characterizes the timing of a force excitation
- 3) The frequency of the harmonic excitation loading is dependent on the phase angle
- 4) All of the above

Quiz - Harmonic Analysis

Quiz - Harmonic Analysis

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