Accession Number : AD0619041

Title :   RESEARCH ON TRENDS OF WAVE BENDING MOMENT FOR DESTROYER-TYPE SHIPS,

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

Personal Author(s) : Zubaly,Robert B. ; Compton,Roger H.

Report Date : JUN 1965

Pagination or Media Count : 93

Abstract : Results are presented of a study of comparative trends of wave-induced midship bending moments for destroyertype ship forms in realistic short-crested irregular seas. Wave-induced bending moments to be expected at sea are predicted by means of the method of linear superposition and statistical analysis of the resulting response spectra. Calculations are based on available systematic model test results in regular waves and available sea spectral data. Variations in non-dimensional wave bending moment coefficients and in effective wave heights are presented graphically as functions of ship size, ship speed, ship heading, ship fullness, and severity of the sea. The results of the statistical investigation of wave-induced bending moments in average North Atlantic weather are plotted as predicted trends of non-dimensional wave bending moment coefficients versus number of wave cycles (i.e. length of time at sea). Conclusions are drawn regarding implications of results for longitudinal strength design standards and recommendations are made for further research. (Author)

Descriptors :   (*HYDRODYNAMICS, DESTROYERS), (*DESTROYERS, HYDRODYNAMICS), MODEL TESTS, SEA WATER, MOMENTS, DEFLECTION, MATHEMATICAL PREDICTION, COMPUTER PROGRAMMING

Distribution Statement : APPROVED FOR PUBLIC RELEASE