Dynamic Analysis of Semi-submersible Under the Postulated Failure of Restraining System with Buoy

Chandrasekaran, S.; Uddin, Syed Azeem; Wahab, Mohamed Mubarak Abdul

doi:10.1007/s13296-020-00420-7

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…Table 1. Dynamic characteristics of moored Semisubmersible [5] Description As seen in Figure 2 [7] , which illustrates the TLP mechanics, a strong coupling is seen between surge (offset) and heave (set down) motion. Large displacements along surge invoke a supportive resistance from heave motion, which helps to encounter the lateral loads.…”

Section: Form-dominant Design Approachmentioning

confidence: 99%

“…Effective design methods, based on the postulated failure analyses help arrive at the safer and sustainable design of platforms for extreme ocean conditions. The natural periods and damping ratios for the Semi-submersible at 1500 m and 2000 m water depths, with and without a submerged buoy, are obtained from free-oscillation tests; results are shown in Table [5] . It is seen that considerable periods in the surge, sway indicate higher flexibility about the horizontal plane.…”

Section: Form-dominant Design Approachmentioning

confidence: 99%

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Functionally graded material and its application to marine structures

Chandrasekaran

Setiapraja

2022

SUSTAIN MAR STRUCT

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Marine structures are exposed to harsh weather conditions, demanding special pre-requisites in design and functional perspectives. Under dynamic loads of larger magnitude, the material-centric design procedure alone is not feasible to ensure the safe disbursement of loads. The compliant offshore structures resist loads primarily by their geometric novelty, and hence their design is form-dominant and no more strength (material) dominant. Large displacements in the rigid body modes in the horizontal plane under lateral loads require their construction material to possess enough ductility to absorb this energy. Steel is one of the most competitive materials for marine structures as it offers good ductility, but corrosion in the marine environment is a major concern. It undergoes strength and functional degradations and therefore requires serious investigation. In the present study, functionally graded material (FGM) is proposed to substitute for steel in marine applications. The method of fabricating FGM and assessing its mechanical and durability properties are discussed. Results show that FGM possesses strength and durability properties at par with the conventionally used X52 steel for marine risers. The presented study will be a major initiative towards future research in exploring competent materials which will be strong and sustainable in the marine environment.

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Section: Form-dominant Design Approachmentioning

confidence: 99%

Section: Form-dominant Design Approachmentioning

confidence: 99%

Functionally graded material and its application to marine structures

Chandrasekaran

Setiapraja

2022

SUSTAIN MAR STRUCT

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“…In oceanographic research, oceanographic survey and ocean engineering construction, it is often necessary to monitor the seawater parameters in a specific area for a long time. Submerged mooring system is a kind of platform widely used in Marine environmental monitoring network, which plays an important role in Marine science research [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Research on movement law of the deployment process for submerged mooring system

Xiao,

Liu,

Qian

et al. 2023

J. Phys.: Conf. Ser.

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Safe deployment is the premise of submerged mooring system before it is put into use. In this paper, on the basis of analyzing the deployment process of the full ocean depth submerged mooring system, a calculation model of the laying process is established, and the influence law of the laying movement of the submerged mooring system, under two working conditions of deployment in the deep sea and deployment in the shallow sea, is analyzed and studied. The relevant results have certain guiding significance for the design and engineering application of the submerged mooring system.

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“…Hence, careful consideration should be given to the design and maintenance of offshore structures in order to avoid early decommissioning, significant corrosion hazards, oil spillage, and other permanent environmental damage. Different activities for proper equipment selection [50][51][52][53][54][55][56][57], design of platform types [58][59][60][61][62][63][64], engineering management of well bores [65][66][67][68][69][70][71][72][73], and other drilling/production procedures [74][75][76][77][78][79][80] are required for the uses of these off-shore structures. One of the most obvious of these applications is offshore oil production, which presents a substantial challenge to the product designer or offshore engineer [81][82][83].…”

Section: Introductionmentioning

confidence: 99%

Review on Fixed and Floating Offshore Structures. Part II: Sustainable Design Approaches and Project Management

Amaechi

Reda

Butler

et al. 2022

JMSE

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Offshore structures exist in a variety of forms, and they are used for a variety of functions in varied sea depths. These structures are tailored for certain environments and sea depths. Different actions for suitable equipment selection, platform type design, and drilling/production processes are required for the applications of these offshore structures, as given in Part I. This paper is the second part, which outlines various processes, loads, design approaches and project management of offshore platforms. To achieve these, proper planning must be conducted for lifting, transportation, installation, design, fabrication, and commissioning of these offshore platforms. Some historical developments of some offshore structures are presented, and some project planning routines are undertaken in this research. The ultimate goal is to provide a general overview of the many processes of offshore platform design, construction, loadout, transportation, and installation. Some discussions on the design parameters such as water depth and environmental conditions were presented. It also lists various software programs used in engineering designs. The review also includes information on cutting-edge offshore platforms and industry advancements. Ultimately, for long-term operations, various types of offshore platforms for specific seawater depths are available.

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Dynamic Analysis of Semi-submersible Under the Postulated Failure of Restraining System with Buoy

Cited by 15 publications

References 26 publications

Functionally graded material and its application to marine structures

Functionally graded material and its application to marine structures

Research on movement law of the deployment process for submerged mooring system

Review on Fixed and Floating Offshore Structures. Part II: Sustainable Design Approaches and Project Management

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