Accession Number : AD0757177

Title :   Feasibility Study of Springing Model Tests of a Great Lakes Bulk Carrier.

Descriptive Note : Technical rept. Jan-Jul 72,

Corporate Author : WEBB INST OF NAVAL ARCHITECTURE GLEN COVE N Y

Personal Author(s) : Hoffman,Dan ; Hooff,Richard Van

Report Date : 14 JUL 1972

Pagination or Media Count : 43

Abstract : A feasibility study is described in which springing bending moment response of a 1000-ft. ore ship model was measured. Regular waves of length between 6 and 14 inches were generated to excite the 1:144-scale model hinged at midships over a range of foreard speeds between 1.0 and 4.5 ft./sec.; significant springing was obtained under resonant conditions which corresponded to 39.6 and 19.5 rad./sec., respectively, for each of the connecting beams used. Analytical solution of the model springing phenomenon is also given using Goodman's theory, and correlation between experimental and theoretical results is shown to be encouraging. (Abstract Modified Abstract)

Descriptors :   (*SHIP HULLS, VIBRATION), (*CARGO SHIPS, SHIP HULLS), STRESSES, DEFORMATION, RESONANT FREQUENCY, DAMPING, SHIP MODELS, MODEL TESTS, FEASIBILITY STUDIES

Subject Categories : Marine Engineering
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE