RESPONSE OF A COLUMN IN RANDOM VIBRATION TESTS

Laboratory experiments were conducted to observe and measure the response amplitude and frequency of a simply supported column. The column was excited by axial forces generated from sinusoidal and random (bandwidths of 3 Hz, 10 Hz, 30 Hz, and 100 Hz) signals. The column will vibrate near its natural frequency if the excitation contains a sufficiently high level power spectral density within the parametric resonance zone of the column. The variance of the response amplitude decreases with increasing bandwidth of excitation. A zero amplitude of response is found during a considerable portion of the excitation time; this indicates there is a discrete component in the probability distribution at zero amplitude.

  • Supplemental Notes:
    • Presented at the January 1974 ASCE National Mtg. on Water Resources Engineering, Los Angeles, Calif.
  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • Boxter, G K
    • Evan-Iwanowski, R M
  • Publication Date: 1975-9

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: p. 1749-61
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00127201
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #11568 Proceeding
  • Files: TRIS
  • Created Date: Dec 29 1975 12:00AM