Accession Number : ADA294040

Title :   Reexamination of Design Criteria for Stiffened Plate Panels.

Descriptive Note : Final rept.,

Corporate Author : DESIGNERS AND PLANNERS INC ARLINGTON VA

Personal Author(s) : Ghose, Dhruba J. ; Nappi, Natale S.

PDF Url : ADA294040

Report Date : 24 MAR 1995

Pagination or Media Count : 111

Abstract : Current ship structural design criteria for stiffened plate panels is based upon a strength of materials approach using either linear plate or beam theory. This approach neglects the effects of vertical shear (normal to the plate surface), membrane and torsional stress components induced by the flexibility of the panel's supporting structure. Recent trends towards the use of higher strength materials have resulted in the design of grillage structures which are more flexible and therefore increase the vertical shear, membrane and torsional stress components in the plate panel. This report presents the results of a study undertaken to determine the effect of the stiffness characteristics of the supporting members of the grillage structure on the plate panel stress. Grillage scantlings were developed using first principals based approach and then analyzed using finite element techniques to take into account the flexibility of the grillage stiffeners and to quantify the effects of vertical shear, membrane and torsional stress components. (MM)

Descriptors :   *SHIPS, *STIFFENING, FINITE ELEMENT ANALYSIS, PANELS, STRUCTURAL ANALYSIS, STIFFNESS, DISPLACEMENT, STEEL, PLATES, SHEAR STRESSES, DESIGN CRITERIA.

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE