Machine-translated by Google. Questions are authored in English.
Top

Discussion

Increasing the damping ratio generally

  • A.leaves the spectrum entirely unchanged
  • B.shifts the spectrum to longer periods
  • C.reduces the spectral ordinates
  • D.increases the spectral ordinates

Answer: C

Correct answer: reduces the spectral ordinates

Damping dissipates energy in each cycle, so the peak response to the same ground motion is smaller. The effect is largest near the peaks of the spectrum, where the response is built up over many cycles, and smallest at very short and very long periods where the ordinates are governed by the peak ground acceleration and displacement instead.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.