Vibration Control of Steel Jacket Platform through Shape Memory Alloys Damper

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ENFERADI M.H.; GHASEMI M.R.; SHABAKHTY N.

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Journal: Modares Mechanical Engineering Year:2020 | Volume:20 | Issue:1 Page(s): 13-24

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Title

Vibration Control of Steel Jacket Platform through Shape Memory Alloys Damper

Author(s)

ENFERADI M.H. | GHASEMI M.R. | SHABAKHTY N. | Issue Writer Certificate

Keywords

Vibration ControlQ2

Offshore Jacket PlatformQ1

Shape Memory Alloy DampersQ1

Hysteresis LoopsQ1

Abstract

Service life and safety of a steel jacket platform is influenced by vibrations generated by environmental loads, waves and winds. Vibrations of the structure and deck may cause fatigue in the structural elements and joints. Also may disrupt the operation of the drilling equipment and facilities as well as the operation of the platform. Therefore, the main aim of this research is to control the vibrations of the steel jacket platform through shape memory alloys dampers. Shape memory alloys have two important properties of shape memory as well as superelastic behavior and are quite suitable for damping applications. In these alloys, crystal structures transition from the austenite to the martensite phase, and vice versa are accompanied by the energy dissipation. In this research, a 90m steel jacket structure equipped with SMA dampers installed in 80m water depth has been modeled as a multi-degree-of-freedom system and analyzed under the time history of wave loads. For solving the differential equations of system vibration and modeling the hysteresis behavior of the shape memory alloys elements, the direct integration alpha method and multi-linear idealized constitutive model have been used, respectively. Jacket platform equipped with the shape memory alloys dampers shows the better result with 42% reduction in deck displacement, 62% reduction in deck acceleration and 32% reduction in shear force of platform base.

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APA: Copy

ENFERADI, M.H., GHASEMI, M.R., & SHABAKHTY, N.. (2020). Vibration Control of Steel Jacket Platform through Shape Memory Alloys Damper. MODARES MECHANICAL ENGINEERING, 20(1 ), 13-24. SID. https://sid.ir/paper/178477/en

Vancouver: Copy

ENFERADI M.H., GHASEMI M.R., SHABAKHTY N.. Vibration Control of Steel Jacket Platform through Shape Memory Alloys Damper. MODARES MECHANICAL ENGINEERING[Internet]. 2020;20(1 ):13-24. Available from: https://sid.ir/paper/178477/en

IEEE: Copy

M.H. ENFERADI, M.R. GHASEMI, and N. SHABAKHTY, “Vibration Control of Steel Jacket Platform through Shape Memory Alloys Damper,” MODARES MECHANICAL ENGINEERING, vol. 20, no. 1 , pp. 13–24, 2020, [Online]. Available: https://sid.ir/paper/178477/en

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