Gaol, Dian Aprilia Lumban (2026) Analisis Ultimate Limit State pada Supported Jacket Turbin Angin Lepas Pantai Berbasis Coupled: Studi Kasus Perairan Selatan Papua. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pengembangan turbin angin lepas pantai (Offshore Wind Turbine/OWT) menuntut verifikasi kekuatan batas ultimit (Ultimate Limit State/ULS) support structure penopang jacket
terhadap kombinasi beban ekstrem di lingkungan laut yang kompleks. Studi ini mengevaluasi kapasitas ultimit struktur jacket untuk wilayah perairan bagian selatan Papua dengan kerangka collapse analysis berbasis coupled analysis. Simulasi aero-hydro-servo-elastic dilakukan di OpenFAST menggunakan model turbin referensi NREL 5-MW, dengan skenario pembebanan mengikuti DLC IEC 61400-3-1 untuk support structure jacket OWT pada kondisi parked extreme 50-year. Dari simulasi tersebut diekstrak riwayat gaya dan momen pada super structure–sub structure–supportstructure untuk kemudian ditransfer ke model struktur di SACS. Analisis struktural dilakukan dua tahap: (i) basic static untuk memperoleh kondisi awal akibat beban tetap dan memperoleh UC, serta (ii) nonlinear collapse (pushover) dengan pembebanan progresif hingga tercapai kapasitas ultimit dan teridentifikasi mekanisme kegagalan. Hasil yang diharapkan meliputi estimasi ultimate strength dalam bentuk Reserve Strength Ratio (RSR). Temuan ini memberikan dasar teknis bagi perencanaan support structure jacket OWT yang lebih andal dan aman dalam menghadapi kondisi lingkungan
ekstrem di Indonesia.
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The development of Offshore Wind Turbines (OWT) requires verification of theUltimate Limit State (ULS) of the jacket support structure against extreme load combinationsin complex marine environments. This study evaluates the ultimate capacity of the jacketstructure for the southern waters of Papua using a coupled analysis-based collapse analysisframework. Aero-hydro-servo-elastic simulations were conducted in OpenFAST using theNREL 5-MW reference turbine model, with loading scenarios following the DLC IEC 61400-3-1 for the OWT jacket support structure under 50-year parked extreme conditions. From thesimulation, force and moment histories on the superstructure–substructure–supportstructurewere extracted and then transferred to the structural model in SACS. The structural analysiswas carried out in two stages: (i) basic static to obtain the initial conditions due to constantloads and obtain UC, and (ii) nonlinear collapse (pushover) with progress4e loading until theultimate capacity is reached and the failure mechanism is identified. The expected resultsinclude an estimate of the ultimate strength in the form of the Reserve Strength Ratio (RSR).These findings provide a technical basis for designing a more reliable and safer OWT jacketsupport structure to withstand extreme environmental conditions in Indonesia.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Offshore Wind Turbine, Jacket, Coupled Analysis, Ultimate Strength, RSR |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM740 Marine turbines |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Dian Aprilia Lumban Gaol |
| Date Deposited: | 20 Jul 2026 08:53 |
| Last Modified: | 20 Jul 2026 08:53 |
| URI: | http://repository.its.ac.id/id/eprint/135778 |
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