Accession Number : ADA294491

Title :   Residual Strength of Damaged Marine Structures.

Descriptive Note : Final rept.,

Corporate Author : DESIGNERS AND PLANNERS INC ARLINGTON VA

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

PDF Url : ADA294491

Report Date : SEP 1994

Pagination or Media Count : 177

Abstract : Traditionally assessment of ship's longitudinal strength has been made by comparing the elastic stresses at the deck or bottom shell to fractions of the material yield strength. This results in high reserve capacity due to inherent redundancies in ship structures. Residual strength, which is defined as the strength of the structure after damage, has rarely been considered either during design or at the time of repair. In this report, key elements required to undertake an engineering analysis to evaluate the residual strength have been identified. Emphasis has been placed on assessing the residual strength of marine structures damaged due to normal operating loads. Methods available to industry for evaluation of damage such as, fracture and ultimate strength have been summarized. An example problem, illustrating the application of an integrated approach to residual strength assessment on a particular ship type, is presented. (AN)

Descriptors :   *STRUCTURAL MECHANICS, *DEFORMATION, *FRACTURE(MECHANICS), *SHIP HULLS, MATHEMATICAL MODELS, TENSILE STRENGTH, STRESS ANALYSIS, PREDICTIONS, FINITE ELEMENT ANALYSIS, LOADS(FORCES), STRUCTURAL ANALYSIS, CRACKING(FRACTURING), DAMAGE ASSESSMENT, ELASTIC PROPERTIES, THREE DIMENSIONAL, DUCTILE BRITTLE TRANSITION, LENGTH, RESIDUAL STRESS, PLASTIC PROPERTIES, FATIGUE(MECHANICS), YIELD STRENGTH, MARINE ENGINEERING.

Subject Categories : Mechanics
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE