Accession Number : AD0675639
Title : THE EFFECT OF SHIP STIFFNESS UPON THE STRUCTURAL RESPONSE OF A CARGO SHIP TO AN IMPULSIVE LOAD.
Descriptive Note : Final rept.,
Corporate Author : NATIONAL ENGINEERING SCIENCE CO PASADENA CALIF
Personal Author(s) : St. Denis,Manley ; Fersht,Samuel N.
Report Date : SEP 1968
Pagination or Media Count : 130
Abstract : The purpose of the study is to set up a computer program to investigate the dynamic effects resulting from an impulsive loading on a ship and to determine how these effects tend to vary with the stiffness of the hull girder. The hull is treated as a Timoshenko beam and the solution is obtained by finite difference technique. Two codes are written: an implicit one, which is more efficient for short durations, and an implicit one, which is superior for long durations of impulse. Application is made to a dry cargo ship. Limited analysis of her response to a unit impulse indicates that, in general, reduced hull rigidity tends to be beneficial. (Author)
Descriptors : (*CARGO SHIPS, LOADS(FORCES)), SHIP STRUCTURAL COMPONENTS, RESPONSE, BEAMS(STRUCTURAL), MECHANICAL PROPERTIES, EQUATIONS OF MOTION, BENDING, HYDRODYNAMICS
Subject Categories : Marine Engineering
Distribution Statement : APPROVED FOR PUBLIC RELEASE