Risqi, Achmad Dwi (2025) Analisis Kekuatan Pada Redesain Fender Jetty Pelabuhan Ferry Penajam Paser Utara. Bachelor thesis, Institut Teknologi Kalimantan.
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Abstract
Fender adalah perangkat bumper yang berfungsi meredam benturan saat kapal merapat ke dermaga atau ketika kapal yang tertambat bergerak akibat arus atau gelombang di pelabuhan. Fender existing di Pelabuhan Ferry Penajam saat ini mengalami kerusakan. Penelitian ini bertujuan untuk mendesain ulang sistem fender existing di pelabuhan ferry Penajam. Pemilihan ukuran fender dilakukan berdasarkan perhitungan energi tumbukan (berthing energy) yang dihasilkan ketika kapal bersentuhan dengan fender, dengan mempertimbangkan variasi kondisi saat proses sandar berlangsung. Pemodelan dan analisis deformasi serta tegangan pada fender dilakukan dengan menggunakan perangkat lunak ansys workbench. Didapatkan hasil perhitungan energi berthing pada fender sebesar 274,68 kNm pada berthing velocity 0,26 m/s dan pada jarak tiap fender sebesar 9,4 m sebanyak 6 buah. Nilai total deformasi yang diperoleh pada fender existing sebesar 0,009 m, sedangkan pada alternatif fender sebesar 0,006 m. Deformasi lebih besar terjadi pada fender existing karena posisinya terbalik. Sementara itu, nilai maksimum equivalent stress tertinggi terjadi di area lubang baut, yaitu 0,519 MPa pada fender existing dan 0,681 MPa pada fender alternatif, yang dipengaruhi oleh perbedaan luas permukaan akibat ukuran fender. Berdasarkan hasil deformasi dan tegangan tersebut, keduanya masih berada dalam batas aman terhadap kegagalan struktur. Dengan melakukan simulasi monte carlo terhadap kedua fender didapatkan probabilitas kegagalan sebesar 0% dan nilai keandalan sebesar 100%. fenders are bumper devices that serve to absorb impact when a ship docks at a pier or when a moored ship moves due to currents or waves in the harbor. The existing fenders at Penajam Ferry Port are currently damaged. This study aims to redesign the existing fender system at Penajam Ferry Port. The selection of fender size is based on calculations of berthing energy generated when the ship comes into contact with the fender, taking into account variations in conditions during the berthing process. Modeling and analysis of deformation and stress on the fender were conducted using ANSYS Workbench software. The calculation results show a berthing energy of 274.68 kNm at a berthing velocity of 0.26 m/s and a distance of 9.4 m between each of the six fenders. The total deformation obtained for the existing fender is 0.009 m, while for the alternative fender it is 0.006 m. Greater deformation occurs on the existing fender due to its inverted position. Meanwhile, the highest maximum equivalent stress occurs in the bolt hole area, which is 0.519 MPa on the existing fender and 0.681 MPa on the alternative fender, influenced by the difference in surface area due to the fender size. Based on the deformation and stress results, both are still within safe limits regarding structural failure. By conducting a Monte Carlo simulation on both fenders, a failure probability of 0% and a reliability value of 100% were obtained.
| Item Type: | Thesis (Bachelor) |
|---|---|
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering |
| Divisions: | Jurusan Sains, Teknologi Pangan, dan Kemaritiman > Teknik Kelautan |
| Depositing User: | Achmad Dwi Risqi |
| Date Deposited: | 14 Jul 2025 03:17 |
| Last Modified: | 14 Jul 2025 03:17 |
| URI: | http://repository.itk.ac.id/id/eprint/24056 |
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