Zumar, Varisha Vada (2018) Desain Multipurpose Landing Craft Tank Menggunakan Metode Optimisasi Global dan Lokal. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Multipurpose LCT (Landing Craft Tank) dikenal sangat efisien untuk pengangkutan alat berat, pekerjaan pertambangan dan proyek konstruksi. Keberadaaan multipurpose LCT diharapkan mampu membantu perkembangan daerah terpencil di Indonesia, salah satunya kabupaten Kepulauan Mentawai. Metode optimasi sangat tepat untuk menyelesaikan persoalan desain kapal yang kompleks. Pemodelan optimisasi yang akan digunakan adalah gabungan dari optimisasi global dan lokal. Metode optimisasi global dan lokal ini dinilai mampu menentukan nilai ukuran utama kapal yang optimum. Pada global optimization, nilai yang didapatkan bersifat umum atau global sehingga hasil yang didapatkan kurang mampu mencapai nilai optima. Oleh karena itu digunakan optimasi lokal untuk mengatasi kelemahan tersebut. Optimasi global menggunakan metode Artificial Neural Network (ANN) dan optimisasi lokal menggunakan metode Generalized Reduced Gradient (GRG). Optimasi dilakukan dengan pembuatan program add-ins pada Microsoft Excel menggunakan Visual Basic For Application (VBA). Fungsi objektif yaitu meminimumkan biaya pembangunan kapal. Dari hasil optimisasi global didapatkan 7 kombinasi ukuran utama dari 10000 kombinasi ukuran utama yang memenuhi batasan optimasi. Perbandingan antara fungsi objektif terminimum optimasi global dengan optimasi global dan lokal yang memenuhi seluruh batasan optimisasi adalah 4.19%. Perbandingan antara nilai fungsi objektif maksimum dan minimum pada optimasi global adalah 7%, sedangkan perbandingan antara nilai fungsi objektif maksimum dan minimum pada gabungan optimasi global dan lokal adalah 10%. Hasil optimisasi gabungan metode global dan lokal menghasilkan fungsi objektif yang lebih optimum. ========== viii
DES
IGN
OF
MULTIPURPOSE LANDING CRAFT TANK (LCT) USING
GLOBAL AND LOCAL OPTIMIZATION
Author
:
Varisha Vada Zumar
Student Number
:
4114100
0
79
Department / Faculty
:
Teknik Perkapalan / Teknologi Kelautan
Supervisor
:
Hasanudin, S.T., M.T.
ABSTRACT
Multipurpo
se
landing craft tank (
LCT
)
is known as very efficient for heavy equipment
transport, mining work and construction projects.
The exist of multipurpose LCT was expected
to help develop in remote areas in Indonesia,
such as
Mentawai Islands
regency
.
The
opti
mization method is perfect for resolving complex ship design issues. Optimization
modeling that used is combine of global and local optimization. This global and local
optimization method was capable of determining the
optimum ship main dimension.
Global
o
ptimization, the value obtained is general or global so that the results obtained less able to
reach the value of optima. Therefore, local optimization used to overcome these weaknesses.
Global optimization uses
Artificial Neural Network
(ANN)
methods and
local optimization
using the
Generalized Reduced Gradient
(GRG)
method
s
. The optimization is working by
creating an add
-
in program in Microsoft Excel using visual basic for application (VBA). The
objective function is to minimize the cost of ship building.
From the results of global
optimization obtained 10 main size combinations of 10000 combinations of key sizes that meet
the limits of optimization. The comparison between the minimum global optimization value
with global and local optimization is 5.14%. T
he ratio between the maximum and minimum
objective function values
for global optimization is 5%, while the comparison between the
maximum and minimum objective function values
on the combined global and local
optimization is 7%. The combined optimizat
ion results of global and local methods produce
more optimum objective functions.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSPe 623.812 Zum d |
| Uncontrolled Keywords: | Landing Craft Tank; Global Optimization; Local Optimization; Visual basic for application |
| Subjects: | V Naval Science > V Naval Science (General) 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: | Varisha Vada Zumar |
| Date Deposited: | 29 Jan 2018 04:33 |
| Last Modified: | 17 Sep 2020 08:09 |
| URI: | http://repository.its.ac.id/id/eprint/50904 |
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