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On the hydroelastic response of box-shaped floating structure with shallow draft. Tank test with large scale model; Senkitsusui hakogata futai no harochu dansei oto ni tsuite. Ogata mokei ni yoru suiso shiken

Abstract

The hydroelastic response test was carried out in waves using an approximately 10m long large model, and the numerical analysis was done by the direct method, for a commercial-size (300m long) box-shaped floating structure with shallow draft. The scale ratio of the model is 1/30.8, and the minimum wave cycle is around 0.7s from wave-making capacity of the tank, which corresponds to 4 to 14s with the commercial-size structure. Elastic displacement and bending strain were measured. The calculated results by the direct method are in good agreement with the observed results. The fluid dynamic mutual interference effects between elements are weak in added mass but strong in damping force, indicating that the range of mutual interference is strongly related to rolling cycle in the range of mutual interference. Wave pressure on the floating structure bottom is high at the upper side of the wave, greatly damping towards the downside of the wave. However, response amplitude of elastic displacement tends to increase at the ends, both in upside and downside of the wave. For the floating structure studied, the 0 to 4th mode components are predominant in longitudinal waves, and the 6th or higher mode components are negligibly low. 21 refs.,  More>>
Authors:
Yago, K; Endo, H [1] 
  1. Ship Research Inst., Tokyo (Japan)
Publication Date:
Dec 31, 1996
Product Type:
Miscellaneous
Report Number:
ETDE/JP-mf-97744282
Reference Number:
SCA: 423000; 320204; PA: NEDO-96:915527; EDB-97:074930; SN: 97001783071
Resource Relation:
Other Information: PBD: Aut 1996; Related Information: Is Part Of Preprint of the Fall 1996 Meeting of the Society of Naval Architects of Japan; PB: 406 p.; Nippon zosen gakkai (1996 nen) shuki koen ronbun maezuri
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; MECHANICAL STRUCTURES; FLOTATION; SEAS; BENCH-SCALE EXPERIMENTS; SCALE MODELS; BENDING; NUMERICAL ANALYSIS; RESPONSE FUNCTIONS; WAVE FORCES; ELASTICITY
OSTI ID:
473713
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97744282; TRN: 96:915527
Availability:
Available from The Society of Naval Architects of Japan, 15-16, Toranomon 1-chome, Minato-ku, Tokyo, Japan; OSTI as DE97744282
Submitting Site:
NEDO
Size:
pp. 341-352
Announcement Date:
Jun 04, 1997

Citation Formats

Yago, K, and Endo, H. On the hydroelastic response of box-shaped floating structure with shallow draft. Tank test with large scale model; Senkitsusui hakogata futai no harochu dansei oto ni tsuite. Ogata mokei ni yoru suiso shiken. Japan: N. p., 1996. Web.
Yago, K, & Endo, H. On the hydroelastic response of box-shaped floating structure with shallow draft. Tank test with large scale model; Senkitsusui hakogata futai no harochu dansei oto ni tsuite. Ogata mokei ni yoru suiso shiken. Japan.
Yago, K, and Endo, H. 1996. "On the hydroelastic response of box-shaped floating structure with shallow draft. Tank test with large scale model; Senkitsusui hakogata futai no harochu dansei oto ni tsuite. Ogata mokei ni yoru suiso shiken." Japan.
@misc{etde_473713,
title = {On the hydroelastic response of box-shaped floating structure with shallow draft. Tank test with large scale model; Senkitsusui hakogata futai no harochu dansei oto ni tsuite. Ogata mokei ni yoru suiso shiken}
author = {Yago, K, and Endo, H}
abstractNote = {The hydroelastic response test was carried out in waves using an approximately 10m long large model, and the numerical analysis was done by the direct method, for a commercial-size (300m long) box-shaped floating structure with shallow draft. The scale ratio of the model is 1/30.8, and the minimum wave cycle is around 0.7s from wave-making capacity of the tank, which corresponds to 4 to 14s with the commercial-size structure. Elastic displacement and bending strain were measured. The calculated results by the direct method are in good agreement with the observed results. The fluid dynamic mutual interference effects between elements are weak in added mass but strong in damping force, indicating that the range of mutual interference is strongly related to rolling cycle in the range of mutual interference. Wave pressure on the floating structure bottom is high at the upper side of the wave, greatly damping towards the downside of the wave. However, response amplitude of elastic displacement tends to increase at the ends, both in upside and downside of the wave. For the floating structure studied, the 0 to 4th mode components are predominant in longitudinal waves, and the 6th or higher mode components are negligibly low. 21 refs., 15 figs., 2 tabs.}
place = {Japan}
year = {1996}
month = {Dec}
}