14.10.2. Power Spectral Density (PSD)

Try these first

1. 1.

   What does Power Spectral Density (PSD) represent?

   Hint

   Focus on what PSD helps us understand in vibrations.

2. 2.

   Name an application of PSD in earthquake engineering.

   Hint

   Think about how engineers use statistical methods.

3. 3.

   What is Power Spectral Density (PSD)?

   • A statistical analysis method
   • An energy distribution measure over frequency
   • A type of structural material

   Hint

   Think about what power distribution means in this context.

4. 4.

   True or False: Narrow-band motions spread energy widely across many frequencies.

   Hint

   Consider how energy can be concentrated.

5. 5.

   Consider a building designed with a natural frequency of 2 Hz. Analyze how a narrow-band earthquake motion with a peak frequency of 2 Hz will affect the structure.

   Hint

   Focus on the resonance effect when frequencies align.

6. 6.

   Imagine a scenario where several vibrations from different earthquakes impact a structure. How would you use PSD analysis to decide on structural reinforcements?

   Hint

   Think about the importance of frequency knowledge for design decisions.