Hakim, Muhammad Luqman (2015) Analisa Perbandingan Fatigue Antara Hull-V Dan Hull-U Akibat Beban Slamming Dengan Metode Elemen Hingga. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Bentuk-bentuk penampang lambung mempunyai karakteristik yang berbeda dari
berbagai segi, seperti perancangan, hidrodinamika, struktur maupun produksi. Hal tersebut
mengakibatkan olah gerak kapal di laut bergelombang menjadi berbeda, salah satunya
menyebabkan dinamic effect yang disebut slamming. Slamming merupakan beban dinamis
yang berulang, dimana beban tersebut dapat menyebabkan kelelahan (fatigue) pada
struktur. Oleh sebab itu, perbedaan bentuk lambung tentunya mengakibatkan peluang
terjadinya slamming, intensitas slamming dan beban slamming yang berbeda, dimana hal
tersebut mempengaruhi besar tegangan dan kelelahan pada struktur. Tugas Akhir ini
menganalisa perbandingan fatigue akibat beban slamming dengan metode elemen hingga
untuk bentuk lambung V dan U pada FORMDATA I, Some Systematically Varied Ship Forms
and Their Hydrostatic Data (1962). Perhitungan divariasikan dengan kecepatan 8 knots (di
bawah kecepatan dinas), 12 knots (kecepatan dinas) dan 16 knots (di atas kecepatan dinas).
Didapatkan hasil bahwa semakin besar kecepatan, menyebabkan semakin besar peluang
terjadinya slamming, intensitas slamming, beban slamming, tegangan dan fatigue life.
Lambung U mempunyai peluang terjadinya slamming, intensitas slamming dan beban
slamming lebih besar dari pada V. Untuk beban yang sama, lambung U memiliki nilai
tegangan yang lebih kecil dan memiliki umur kelelahan (fatigue life) lebih lama dari pada
lambung V.
================================================================================ Sectional shapes of the ship’s hull have different characteristics from various aspects,
such as design, hydrodynamics, structure and production. It causes differences the ship’s
motion in the sea, one of them causes the dynamic effect that is called slamming. The
slamming is a recurrent dynamic load, where it can cause fatigue on the structure. Therefore,
the differences on hull form would result that the slamming probability, the slamming intensity
and the slamming loads are different, where they affect to stress and fatigue on structure.
This final project analyzes the comparison fatigue caused slamming load with finite element
method for hull form V and U on FORMDATA I, Some Systematically Varied Forms and
Their Ship Hydrostatic Data (1962). The calculations are varied on speed 8 knots (at below
speed service), 12 knots (speed service) and 16 knots (at above speed service). They show
that the greater of speed, cause the greater slamming probability, the greater slamming
intensity, the greater slamming load, the greater stress and the greater fatigue life. the hull U
has that the slamming probability, the slamming intensity and the slamming load are greater
than V. For the same load, the hull U has that the stress value is smaller than V, and the
fatigue life is longer than V.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSPe 620.112 6 Hak a |
| Uncontrolled Keywords: | Slamming, Formdata; Lambung U; Lambung V; Metode elemen hingga; Tegangan; Umur kelelahan |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Divisions: | Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis |
| Depositing User: | - Taufiq Rahmanu |
| Date Deposited: | 21 Jan 2020 06:22 |
| Last Modified: | 21 Jan 2020 06:22 |
| URI: | http://repository.its.ac.id/id/eprint/72820 |
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