EVALUATION OF SDRC DAMPING ANALYSIS

Structural Dynamic Research Corporation (SDRC) obtained FM magnetic tape from Teledyne Engineering Services containing specified stress records from three Great Lakes vessels: M/V STEWART J. CORT, M/V ROGER BLOUGH, and S/S EDWARD L. RYERSON. Under USCG contract, SDRC was tasked to determine the damping value of the intervals from these records. The intervals chosen represented periods of springing aboard the vessels. To determine a relative 'feel' for the accuracy of the results obtained by SDRC, LT M. D. NOLL, U.S.C.G. Office of Research and Development, performed an evaluation which consisted of a manual calculation of damping and logarithmic decrement from associated quick-looks and a comparison of these with the results obtained by SDRC. Although the comparison does not show complete agreement, this evaluation does conclude that the SDRC analysis did provide reasonable values and may be valuable for future data reduction and analysis. (Author)

  • Supplemental Notes:
    • Availability: Microfiche copies only.
  • Corporate Authors:

    United States Coast Guard

    2100 Second Street, SW
    Washington, DC  United States  20593
  • Authors:
    • Noll, M D
  • Publication Date: 1980-1

Media Info

  • Pagination: 180 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00327290
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: USCG-D-5-80
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM