scholarly journals TREATMENT OF SINGULARITIES IN HYDROELASTIC ANALYSIS OF LARGE FLOATING STRUCTURES USING BE-FE HYBRID MODEL

2003 ◽  
Vol 68 (565) ◽  
pp. 151-158 ◽  
Author(s):  
Ken-ichi FUJITA ◽  
Takuji HAMAMOTO
Keyword(s):  
Hybrid Model ◽  
Floating Structures ◽  
Hydroelastic Analysis

Very Large Floating Structures

2007 ◽  
Author(s):  
H. Suzuki ◽  
H. R. Riggs ◽  
M. Fujikubo ◽  
T. A. Shugar ◽  
H. Seto ◽  
...  
Keyword(s):  
Design Procedure ◽  
Offshore Structures ◽  
Floating Structure ◽  
Floating Structures ◽  
Design Procedures ◽  
Novel Technology ◽  
Hydroelastic Analysis ◽  
Behavior Design ◽  
Hydroelastic Response ◽  
Near Future

Very Large Floating Structure (VLFS) is a unique concept of ocean structures primary because of their unprecedented length, displacement cost and associated hydroelastic response. International Ship and Offshore Structures Congress (ISSC) had paid attention to the emerging novel technology and launched Special Task Committee to investigate the state of the art in the technology. This paper summarizes the activities of the committee. A brief overview of VLFS is given first for readers new to the subject. History, application and uniqueness with regard to engineering implication are presented. The Mobile Offshore Base (MOB) and Mega-Float, which are typical VLFS projects that have been investigated in detail and are aimed to be realized in the near future, are introduced. Uniqueness of VLFS, such as differences in behavior of VLFS from conventional ships and offshore structures, are described. The engineering challenges associated with behavior, design procedure, environment, and the structural analysis of VLFS are introduced. A comparative study of hydroelastic analysis tools that were independently developed for MOB and Mega-Float is made in terms of accuracy of global behavior. The effect of structural modeling on the accuracy of stress analysis is also discussed. VLFS entails innovative design methods and procedure. Development of design criteria and design procedures are described and application of reliability-based approaches are documented and discussed.

Hydroelastic analysis of floating structures with liquid tanks and comparison with experimental tests

2015 ◽  
Vol 52 ◽  
pp. 167-187 ◽  
Author(s):  
Kang-Heon Lee ◽  
Seongpil Cho ◽  
Ki-Tae Kim ◽  
Jin-Gyun Kim ◽  
Phill-Seung Lee
Keyword(s):  
Experimental Tests ◽  
Floating Structures ◽  
Hydroelastic Analysis

scholarly journals Hydroelasticity of the barge near island affected by bathymetry based on THAFTS software

2019 ◽  
Vol 234 (1) ◽  
pp. 48-58
Author(s):  
Ye Lu ◽  
Pandeli Temarel ◽  
Ye Zhou ◽  
Chao Tian
Keyword(s):  
Shallow Water ◽  
Three Dimensional ◽  
Water Area ◽  
Dynamic Responses ◽  
Response Analysis ◽  
Three Dimension ◽  
Floating Structure ◽  
Floating Structures ◽  
Hydroelastic Analysis ◽  
Water Depths

Floating structures are sometimes deployed in shallow water areas close to reefs and islands as facilities serving tourists. In contrast to the open sea, the marine environment, such as wave and current, in the nearshore shallow water area will be affected by the non-uniform complex seabed bottom, and the hydrodynamic interaction between the floating structure and the seabed bathymetry should be investigated, instead of being ignored as the case when a uniform seabed is assumed. A hydroelastic analysis method for slowly varying water depths is proposed to calculate the hydroelastic responses of the floating structures, considering the seabed as a fixed boundary condition. This method was integrated into the software THAFTS (Three Dimension Hydroelastic Analysis of Floating and Translating, developed by China Ship Scientific Research Center). Based on the THAFTS software, the three-dimensional hydroelastic motion response analysis of a barge is carried out, in which the effects of different water depths and the complex bathymetry are investigated by comparing the results of the motion and structural responses of the barge. The stress distribution of the barge with the effect of the bathymetry taken into account is presented in this article as well as the modal stresses. The strength evaluation of the barge indicates that the effect of the inhomogeneous seabed plays a large role in the dynamic responses of the barge when it is deployed near reefs.

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