CORRELATION BETWEEN EXPERIMENTAL AND THEORETICAL MODAL PROPERTIES OF AN ECHINODOME

A comparison is made between the experimentally derived and theoretically predicted modal properties of an axisymmetric shell of revolution of optimum form (for underwater purposes), an echinodome. The number of modes to be considered is based on a theoretical assessment of the effective modal mass of the structure. A procedure is carried out to identify closely correlated experimental and theoretical vibrational mode pairs. Structural coordinates at which large discrepancies occur between experimental and theoretical mode shapes are found with the aid of recently developed statistical parameters and matrix methods. A more accurate finite element model representing the dynamic characteristic of an echinodome prototype is evolved.

  • Supplemental Notes:
    • Modal Analysis, v 10 n 4, Oct 1995, p 204 [20 p, 16 ref, 8 tab, 11 fig]
  • Authors:
    • Royles, R
    • El-Deeb, K M
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00719009
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM