Surge Response Control of FPSO Using Nonlinear MTLDs

Gurusamy, Saravanan; Kumar, Deepak

doi:10.1007/978-981-15-8506-7_11

Cited by 1 publication

(2 citation statements)

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“…The finite element modelling of FPSOs with storge tanks in the hull requires a considerable number of degrees of freedom, making the computational analysis highly tedious. Hence, the lumped mass model is being considered in studies on the FPSO under unidirectional wave excitation (Duggal et al, 2011; Gurusamy et al, 2019; Gurusamy and Kumar, 2021). Further, a liquid-containing tank under lateral excitation is commonly modelled by mass-spring-dashpot systems representing an impulsive or “dead” mass, and a series of sloshing masses, with the fundamental sloshing mode predominating (Ibrahim et al, 2001).…”

Section: Modelling Of Fpso-tmdi Systemmentioning

confidence: 99%

“…They are also more reliable in the harsh marine environment as they do not require electronic components. Surge vibration control of ship-shaped FPSOs using passive multiple TLDs has been studied by Gurusamy et al (2019) and Gurusamy and Kumar (2019, 2021). In these works, the FPSO has been modelled by a SDOF system and the existing cargo tanks have been used as the TLDs.…”

Section: Introductionmentioning

confidence: 99%

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Wave-induced vibration control of Floating production storage and offloading systems by tuned mass damper inerter

Sarkar,

Chakraborty,

Ghosh

2024

Advances in Structural Engineering

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Floating production storage and offloading systems (FPSOs) are gaining prominence in the offshore industry. FPSOs are generally designed to weathervane, necessitating surge vibration control for station keeping. Since the natural period of surge vibration is far higher than the dominant period of the input wave load, instead of supplemental damping, a high inertial device, such as the tuned mass damper inerter (TMDI), would be effective. This concept has hitherto not been investigated for the FPSO. A frequency domain formulation of the FPSO-TMDI system under wave force, considering interaction of the liquid cargo is presented. Utilizing Froude-Krylov theory, suitably modified to account for diffraction effects, wave force on the FPSO is obtained using field data from North Sea. TMDI parameters are optimized using Genetic Algorithm under different tank-fill conditions. The results demonstrate that the TMDI holds potential in providing an effective and robust performance in controlling the surge motion of FPSOs.

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