Charizzaka, Ahmad (2016) Analisis Pengikatan Dan Gerakan Pada Dok Apung Akibat Gaya Luar Dengan Variasi Desain Pengikatan Di Perairan Dangkal Terbuka. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perkembangan maritim tidak lepas dari kapal sebagai sarana transportasi. Hal itu
menyebabkan kebutuhan akan dok sebagai tempat pembuatan dan reparasi kapal semakin
meningkat. Semakin mahalnya harga lahan dan berbagai kelebihan yang ditawarkan membuat
dok apung kian diminati sebagai solusi. Dok apung sendiri sebagai suatu struktur apung tidak
lepas dari pengaruh gaya luar seperti gelombang, angin, dan arus. Tugas akhir ini bermaksud
untuk melakukan analisis terhadap respon gerakan dok apung akibat gaya luar, tegangan yang
terjadi pada rantai pengikatan, serta tingkat kenyamanan dari dok apung itu sendiri. Analisa
dilakukan dengan pemodelan secara numerik menggunakan perangkat lunak Maxsurf dan
Ansys Aqwa. Pada penelitian ini, dilakukan percobaan terhadap 3 kondisi dok apung yakni
saat kosong, saat kapal naik dok, dan saat kondisi balas penuh, serta dengan 3 variasi sudut
datang gelombang yakni 0⁰, 45⁰ dan 90⁰. Juga divariasikan konfigurasi pengikatan dok apung
yakni menyilang dan menyebar. Setelah dilakukan analisis disimpulkan bahwa nilai tegangan
rantai pada kondisi kosong dan kapal naik dok berada di bawah batas breaking load,
sedangkan pada kondisi balas penuh tegangan yang terjadi melebihi batas breaking load baik
pada desain pengikatan menyebar maupun pengikatan menyilang.Pengikatan menyilang
memiliki nilai tegangan maksimum yang lebih besar dibandingkan dengan pengikatan
menyebar. Tingkat ketidaknyamanan (Motion Sickness Incidence) gerakan dok apung adalah
not uncomfortable atau dapat dikatakan nyaman dengan percepatan heave 0.208 m/s2
. Serta
gerakan dok apung yang masih memenuhi kriteria dari biro klasifikasi.
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Maritime development can not be separated from the ships as a means of
transportation. That caused the need for the dock as the place of manufacture and ship repair
is increasing. Increasingly high price of land and the various advantages offered to make
floating dock increasingly popular as a solution. Floating dock itself as a floating structure can
not be separated from the influence of external forces such as waves, winds and currents. This
final project intends to conduct an analysis of movement responses floating dock due to
external forces, the tension that occurs in the binding chains, and the comfort level of the
floating dock itself. The Analysis was done by using a numerical modeling software Ansys
Aqwa and Maxsurf. In this study, conducted experiments on three conditions of floating dock
which is empty condition, ship-docked, and full-ballst condition as well as with third variation
of the angle of attack 0⁰, 45⁰ and 90⁰. Also varied configuration of the floating dock mooring
layout crosswise and spread. After analysis, it was concluded that the chain tension in a
empty dock condition and docked ship condition below the limit breaking load, whereas in
full-ballast conditions the mooring tension beyond the limit breaking load both on the spread
mooring and cross mooring design. Cross desaign have a maximum tesion value greater than
the spread mooring. The level of discomfort (Motion Sickness Incidence) movement floating
dock is not uncomfortable or can be said to be comfortable with a heave acceleration of 0,208
m/s2. As well as the movement of floating dock that still meets the criteria of classification
bureau.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSPe 623.83 Cha a-1 3100017069241 |
| Uncontrolled Keywords: | Dok Apung, Motion Sickness Incidence, Respon Gerakan, Konfigurasi Pengikatan, Tegangan Rantai Pengikatan, Floating Dock, Motion Sickness Incidence, Response Motions, Mooring Configuration, Mooring Tension. |
| Subjects: | V Naval Science > V Naval Science (General) > V220 Naval ports, bases, reservations, docks, etc. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 19 Feb 2020 16:37 |
| Last Modified: | 19 Feb 2020 16:37 |
| URI: | http://repository.its.ac.id/id/eprint/74907 |
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