Accession Number : AD0422317

Title :   CALCULATED NATURAL FREQUENCIES AND NORMAL MODES OF VIBRATION OF THE USS OKINAWA (LPH-3),

Corporate Author : DAVID TAYLOR MODEL BASIN WASHINGTON D C

Personal Author(s) : Robinson,Donald C.

Report Date : AUG 1963

Pagination or Media Count : 25

Abstract : Normal mode shapes and natural frequencies of vertical, horizontal, and coupled torsionhorizontal vibration were calculated for the hull of the USS Okinawa (LPH-3), an amphibious assault carrier. Parameters used in the calculations with a digital computer are given. The calculated natural frequencies for a heavy displacement for vertical and horizontal vibration are compared with frequencies obtained experimentally. Mode shapes and natural frequencies were also calculated for a light displacement. (Author)

Descriptors :   (*AIRCRAFT CARRIERS, AMPHIBIOUS OPERATIONS), (*SHIP HULLS, VIBRATION), DIGITAL COMPUTERS, MATHEMATICAL ANALYSIS, MOMENTS, DAMPING, MOTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE