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All Journal WAVE: Jurnal Ilmiah Teknologi Maritim
Alamsyah
Department of Naval Architecture, Kalimantan Institute of Technology
Control & Systems Engineering Energy Engineering Mechanical Engineering Transportation

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Kajian Struktur Dasar Ganda pada Accomodation-Work Barge (AWB) Akibat Perubahan Fungsi Operasional dengan Pendekatan Metode Elemen Hingga Hariyono Ismail; Alamsyah; Ferdian Pasha Anwar; Chris Jeremy Verian Sitorus; Harlian Kustiwansa; Cindy Lionita Agusty; Azhar Aras Mubarak
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 19 No. 1 (2025)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2025.11477

Abstract

Accomodation-Work Barge (AWB) merupakan jenis kapal tongkang tanpa sistem propulsi yang berfungsi sebagai tempat akomodasi bagi pekerja di sektor migas dan industri kemaritiman. Untuk menunjang sistem tambat, pemilik kapal melakukan modifikasi dengan mengubah tangki air tawar menjadi ruang mooring dan anchor winch. Alih fungsi ini menyebabkan terjadinya perubahan pola pembebanan pada struktur double bottom. Penelitian ini bertujuan untuk membandingkan kinerja struktur double bottom sebelum dan sesudah modifikasi pada tiga kondisi pembebanan, yaitu air tenang, sagging, dan hogging. Beban yang dianalisis meliputi muatan fresh water pada kondisi awal serta beban mooring dan anchor winch pada kondisi setelah modifikasi. Hasil analisis menggunakan pendekatan metode elemen hingga menunjukkan bahwa tegangan maksimum terjadi saat kondisi hogging sebesar 162,19 MPa sebelum modifikasi dan meningkat menjadi 184,66 MPa setelah modifikasi. Evaluasi faktor keamanan pada frame 20–25 di bawah ruang mooring mengalami penurunan, baik kriteria bahan maupun tegangan ijin BKI. Nilai Safety Factor minimum setelah modifikasi adalah 1,02 saat hogging. Hasil ini menunjukkan bahwa modifikasi ruang tangki berpengaruh signifikan terhadap penurunan kekuatan struktur double bottom.
Maximum Stress Analysis on Ship Anchor Chains with Various Force Angles Chris Jeremy Verian Sitorus; Luluh Wardah; Alamsyah; Suardi; Andi Mursid Nugraha Arifuddin; Samsu Dlukha Nurcholik; Hariyono; Jusma Wahidah; Harlian Kustiwansa; Ahmad Azwar Mas`ud M
WAVE: Jurnal Ilmiah Teknologi Maritim Vol. 19 No. 1 (2025)
Publisher : National Research and Innovation Agency (BRIN Publishing)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/wave.2025.11611

Abstract

One of the components of ship fittings is the anchor chain. Usually, when the anchor is moored, it is not always positioned perpendicular to the ship’s hull; instead, it often forms an angle between the chain and the hull. Due to environmental influences or excessive tension occurring at certain angles, there have been cases of anchor chains breaking. Therefore, it is necessary to conduct a maximum stress analysis of the ship’s anchor chain with varying force angles to determine the maximum stress experienced by the chain. This research focuses on the anchor chain of the Tug Boat Marina 2435 and utilizes ANSYS Workbench for finite element analysis. In this research, the chain is suspended from the hawse pipe with a diameter of 19 mm, and the loading on the anchor chain is static, consisting of the weight of the chain and the anchor. The angles analyzed are 30°, 35°, 40°, 45°, 50°, 55°, and 60°. The maximum stress on the anchor chain was observed at an angle of 35°, with a value of 6.9943 MPa. The stress at each angle remained below the ultimate tensile strength of the material, which is 515 MPa.
Co-Authors Ahmad Azwar Mas`ud M Andi Mursid Nugraha Arifuddin Azhar Aras Mubarak Chris Jeremy Verian Sitorus Cindy Lionita Agusty Ferdian Pasha Anwar Hariyono Hariyono Ismail Harlian Kustiwansa Harlian Kustiwansa Jusma Wahidah Luluh Wardah Samsu Dlukha Nurcholik Suardi