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Wave response analyses of floating crane structure; Crane sen no jobu kozobutsu no haro oto

Abstract

Identifying a dynamic load acting on a lifted load in a floating crane moving in waves is important for preparing an operation manual for the floating crane. Analyses were made on motions in waves of a floating crane with a lifting load of 3,600 tons, with considerations given to deformation of the crane structure. Discussions were given on a dynamic load acting on a lifted load. If a case that considers elastic deformation in the crane structure is compared with a case that does not consider same in calculating hull motions of the floating crane, the difference between them is small if wave length {lambda} to the ship length L is about 0.5. However, if {lambda}/L is 1.0 and 1.5, the difference grows very large. Therefore, the effect of deformation in the crane structure on hull motions of the floating crane cannot be ignored in these cases. A dynamic load acting on a lifted load that considers deformation in the crane structure is about 5% of lifted weight in a headsea condition in which the wave height is 2 m and {lambda}/L is 1.5. As opposed, an estimated value of a dynamic load when the crane structure is regarded as  More>>
Authors:
Nobukawa, H; Takaki, M; Kitamura, M; Ahou, G; [1]  Higashimura, M [2] 
  1. Hiroshima University, Hiroshima (Japan). Faculty of Engineering
  2. Fukada Salvage and Marine Works Co. Ltd., Osaka (Japan)
Publication Date:
Dec 31, 1996
Product Type:
Miscellaneous
Report Number:
ETDE/JP-mf-97721531
Reference Number:
SCA: 420204; PA: NEDO-96:913858; EDB-97:015789; SN: 97001718544
Resource Relation:
Other Information: PBD: Spr 1996; Related Information: Is Part Of Proceedings of the Spring Meeting of the Society of Naval Architects of Japan (1996). Part 2. Structure, materials, welding, construction, and design; PB: 219 p.; Nihon zosen gakkai (1996 nen) shunki koen ronbun maezuri. 2. Kozo, zairyo, yosetsu, kosaku, sekkei
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; CRANES; BARGES; MECHANICAL STRUCTURES; DEFORMATION; WATER WAVES; DYNAMIC LOADS; WAVELENGTHS; MATERIALS HANDLING; STATIC LOADS
OSTI ID:
414211
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97721531; TRN: 96:913858
Availability:
Available from The Society of Naval Architects of Japan, 15-16, Toranomon 1-chome, Minato-ku, Tokyo, Japan; OSTI as DE97721531
Submitting Site:
NEDO
Size:
pp. 327-337
Announcement Date:

Citation Formats

Nobukawa, H, Takaki, M, Kitamura, M, Ahou, G, and Higashimura, M. Wave response analyses of floating crane structure; Crane sen no jobu kozobutsu no haro oto. Japan: N. p., 1996. Web.
Nobukawa, H, Takaki, M, Kitamura, M, Ahou, G, & Higashimura, M. Wave response analyses of floating crane structure; Crane sen no jobu kozobutsu no haro oto. Japan.
Nobukawa, H, Takaki, M, Kitamura, M, Ahou, G, and Higashimura, M. 1996. "Wave response analyses of floating crane structure; Crane sen no jobu kozobutsu no haro oto." Japan.
@misc{etde_414211,
title = {Wave response analyses of floating crane structure; Crane sen no jobu kozobutsu no haro oto}
author = {Nobukawa, H, Takaki, M, Kitamura, M, Ahou, G, and Higashimura, M}
abstractNote = {Identifying a dynamic load acting on a lifted load in a floating crane moving in waves is important for preparing an operation manual for the floating crane. Analyses were made on motions in waves of a floating crane with a lifting load of 3,600 tons, with considerations given to deformation of the crane structure. Discussions were given on a dynamic load acting on a lifted load. If a case that considers elastic deformation in the crane structure is compared with a case that does not consider same in calculating hull motions of the floating crane, the difference between them is small if wave length {lambda} to the ship length L is about 0.5. However, if {lambda}/L is 1.0 and 1.5, the difference grows very large. Therefore, the effect of deformation in the crane structure on hull motions of the floating crane cannot be ignored in these cases. A dynamic load acting on a lifted load that considers deformation in the crane structure is about 5% of lifted weight in a headsea condition in which the wave height is 2 m and {lambda}/L is 1.5. As opposed, an estimated value of a dynamic load when the crane structure is regarded as a rigid body is 13%, which is 2.6 times as great as the case that considers deformation of the crane structure. 3 refs., 17 figs., 1 tab.}
place = {Japan}
year = {1996}
month = {Dec}
}