Analisis Kekuatan Lokal Pada Unit Block Topside Offshore Substation Tipe Stressed Skin Structure

Wanjaya, Evanika (2024) Analisis Kekuatan Lokal Pada Unit Block Topside Offshore Substation Tipe Stressed Skin Structure. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam industri energi terbarukan, pembangunan substation adalah komponen kunci untuk mengintegrasikan energi yang dihasilkan dari sumber seperti turbin angin lepas pantai . Pada penelitian ini, substation yang diteliti merupakan tipe stressed skin structure dimana platform hanya berupa beam dan plat dan difabrikasi dengan metode baru yang dinamakan unit block. Sebelum siap untuk di fabrikasi, struktur ini harus dimodelkan dan di analisis untuk meminimalisir kegagalan. Permodelan didasarkan pada beban total yang ditanggung oleh struktur. Software AutoCad digunakan untuk mempermudah dalam menvisualisasikan dimensi dari struktur unit block sebelum dimodelkan dengan software SACS untuk mengetahui respon struktur saat kondisi fabrikasi maupun lifting. Diketahui bahwa dengan beban total equipment sebesar 220,7652 kN didapatkan konfigurasi beam utama W14x730 dan stiffener W10x100 dengan dua ketebalan plat yaitu 8mm untuk dinding dan 10mm untuk lantai. Hasil ini dijadikan input untuk menganalisis Finite Element Method pada plat dan sambungan beam. Analisis dilakukan dengan bantuan Software ANSYS Workbench untuk mengetahui tegangan von misses maksimal yang terjadi pada pelat dan sambungan beam. Diketahui pada model lokal , tegangan von misses plat maksimum adalah 13.298Mpa dengan defleksi maksimum 0.08154mm. Sedangkan tegangan von mises sambungan beam maksimum 7.2224x10-5MPa pada beam utama.
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In the renewable energy industry, substation construction is a key to integrate energy generated from sources such as offshore wind turbines. In this research, the substation studied is a stressed skin structure type where the platform is only beams and plates and it is fabricated using a new method called unit block. Before it is ready for fabrication, this structure must be modeled and analyzed to minimize failure. Modeling is designed based by the total load borne by the structure. AutoCad software is used to make it easier to visualize the dimensions of the unit block structure before it is modeled with SACS software to determine the structural response during fabrication and lifting conditions. It is known that with a total equipment load of 220.7652 kN, the main beam configuration is W14x730 and stiffener W10x100 are obtained with two plate thicknesses, which are 8mm for walls and 10mm for floors. These results are used as input to analyze the Finite Element Method on the plate and beam connection. The analysis is done with the help of ANSYS Workbench Software to determine the maximum von misses stress that occurs in the plate and beam connection. It is known that in the local model, the maximum plate von misses stress is 13.298Mpa with a maximum deflection of 0.08154mm. While the maximum beam connection von mises stress is 7.2224x10-5MPa at the main beam.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Finite Element Method, Local Analysis, Modelling, Stressed Skin, Unit Block,Analisis Lokal, Finite Element Method, Permodelan, Stressed Skin, Unit Block.
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1665 Offshore structures--Materials.
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Evanika Wanjaya
Date Deposited:	05 Aug 2024 06:08
Last Modified:	05 Aug 2024 06:08
URI:	http://repository.its.ac.id/id/eprint/109691

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