Analisis Keandalan Star Plate Pada Struktur Jacket Platofrm XYZ

Kurniawan, Aditya Ardhana (2024) Analisis Keandalan Star Plate Pada Struktur Jacket Platofrm XYZ. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada dekade ini minyak dan gas bumi masih menjadi kebutuhan utama yang digunakan
dalam kehidupan manusia Kondisi ini membuat industri minyak dan gas terus berkembang
seiring dengan kebutuhan manusia yang terus kian meningkat dan mengakibatkan cadangan
minyak serta gas di daratan semakin menipis. Hal inilah yang menuntut manusia untuk
melakukan ekspansi eksplorasi minyak dan gas menuju lepas pantai, dalam eksplorasi migas
dibutuhkan sebuah kondisi yang aman dan terjamin, maka dapat dilakukan analisis
serviceability limit state (SLS). Dalam penelitian Tugas Akhir ini dilakukan analisis tegangan
pada star plate, kemudian star plate dianalisis keandalannya dengan menggunakan simulasi
Mean Value First Order Second Movement MVFSOM. Pada hasil analisis SACS, Unity Check
diambil pada kondisi kondisi tertinggi yaitu pada kondisi operasional minimum, salah satu
joint antara deck leg dengan beam dipilih. Kemudian dilakukan permodelan geometri pada
ANSYS untuk selanjutnya di analisis secara lokal untuk mencari tegangannya. UC pada
sambungan antara bernilai 0,166 untuk member 2015-2004, 0,281 untuk member 2218-2004,
0,330 untuk member 2229-2004, 0,413 untuk member 2030-2004, dan 0,111 untuk member
1004-2004. Pada hasil analisis tegangan star plate dengan variasi ketebalan plat 50 mm dan
40 mm adalah tegangan maksimummnya 117,97 MPa dan 225,64 MPa. Hasil dari analisis
keandalannya didapatkan indeks keandalannya pada variasi plat 50 mm dan 40 mm masingmasing adalah 5,24 dan 4,07
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In this decade, oil and gas are still the main needs used in human life. This condition
makes the oil and gas industry continue to grow along with human needs that continue to
increase and result in depleting oil and gas reserves on land. This is what requires humans to
expand oil and gas exploration to offshore, in oil and gas exploration a safe and secure condition
is needed, then a serviceability limit state (SLS) analysis can be carried out. In this Final Project
research, a stress analysis was carried out on the star plate, then the star plate was analyzed for
reliability using the Mean Value First Order Second Movement MVFSOM simulation. In the
SACS analysis results, Unity Check is taken at the highest condition condition, namely at the
minimum operational condition, one of the joints between the deck leg and the beam is selected.
Then geometry modeling is done in ANSYS for further local analysis to find the stress. UC at
the intermediate joints is 0.166 for member 2015-2004, 0.281 for member 2218-2004, 0.330
for member 2229-2004, 0.413 for member 2030-2004, and 0.111 for member 1004-2004. The
results of the star plate stress analysis with plate thickness variations of 50 mm and 40 mm are
the maximum stresses of 117.97 MPa and 225.64 MPa. The results of the reliability analysis
obtained the reliability index at plate variations of 50 mm and 40 mm are 5.24 and 4.07,
respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Star Plate, Analisis, Tegangan, MVFSOM, Star Plate, Analysis, Stress, MVFOSM
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169 Reliability (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Aditya Ardhana
Date Deposited:	08 Aug 2024 07:11
Last Modified:	08 Aug 2024 07:11
URI:	http://repository.its.ac.id/id/eprint/114467

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