Haque, Shakina Azizul (2017) Analisa Kekuatan Swash Bulkhead Sebagai Longitudinal Bulkhead Kapal Tanker Menggunakan Metode Elemen Hingga. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kapal tanker adalah kapal yang membawa muatan curah cair. Dimana setiap tanki ruang muat mempunyai free surface area. Free surface area memungkinkan adanya gerakan bebas dari muatan. Gerakan dari muatan akan menyebabkan sloshing pressure secara longitudinal ataupun transversal. Sloshing pressure akibat gerakan muatan secara melintang merupakan salah satu penyebab dari capsize, hal ini dapat diminimalisir dengan cara pemasangan longitudinalbulkhead. Inovasi dari longitudinal tight bulkhead adalah swash bulkhead. Swash bulkhead memiliki lubang pada sekatnya dan menyebabkan swash bulkhead lebih ringan dibandingkan tight bulkhead. Disisi lain swash bulkhead memiliki sloshing pressure yang lebih kecil dibanding longitudinal bulkhead. Namun dari segi kekuatan perlu dilakukan pengecekan pada kedua bulkhead.
Pengecekan kekuatan konstruksi kedua sekat dilakukan dengan analisis metode elemen hingga. Longitudinal swash bulkhead dimodelkan dengan 4 diameter lubang yang berbeda yaitu diameter 200; 300; 400; 500 mm dan 3 total luasan yang sama yaitu 6%, 8%, dan 10% dari total luas sekat keseluruhan.
Tegangan maksimum yang dihasilkan dari longitudinnal tight bulkhead sebesar 113.6 MPa, dan tegangan maksimum swash bulkhead yang terendah dari total luasan 6% sebesar 88.074 MPa pada variasidiameter 300 mm, total luasan 8% sebesar 85.096 MPa pada variasi diameter 300 mm, dan total luasan 10% sebesar 88.074 MPa pada variasidiameter 300 mm. Sehingga dari hasil analisa tersebut didapatkan model longitudinal swash bulkhead paling optimal yaitu longitudinal swash bulkhead dengan variasidiameter 300 mm pada total luasan 8%.
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Tanker is a liquid bulk carrier vessel. Every tank of this vessel has free surface area. Free surface area makes possible free movement of the load. This movement causes sloshing pressure in longitudinal or transversal way. Sloshing pressure, caused by the transverse load movement, is one of the cause of capsize; can be minimized by applying longitudinal bulkhead. Swash bulkhead is an innovation of longitudinal bulkhead. Swash bulkhear has many holes in its bulkhead which make it lighter than tight bulkhead. On the other side, swash bulkhead has smaller sloshing pressure than longitudinal bulkhead. However, in the term of strength, checking on these two bulkheads is necessary.
Strength checking on these bulkhead was done with finite element analysis method. Longitudinal swash bulkhead was modelled with 4 different hole diameters: 200, 300, 400, 500 mm, and the same total areas of 6%, 8%, and 10% of the total area of the bulkhead.
Maximum stress produced from the longitudinal tight bulkhead is 113.6 Mpa, and the most effective maksimum stress of the total area of 6% is 88.074 MPa of longitudinal swash bulkhead with 300 mm of diameter; total area of 8% is 85.096 Mpa for the longitudinal swash bulkhead with 300 mm of diameter; total area of 10% is 88.074 Mpa for longitudinal swash bulkhead with 300 mm of diameter. From the result of the analysis, the model of the most effective longitudinal swash bulkhead, with 300 mm of diameter and 8% of total area, was made.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSPe 623.824 3 Haq a |
| Uncontrolled Keywords: | swash bulkhead, sloshing, metode elemen hingga, analisis kekuatan, finite element method, strength analysis |
| 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: | Shakina Azizul Haque |
| Date Deposited: | 15 Dec 2017 08:16 |
| Last Modified: | 06 Mar 2019 02:01 |
| URI: | http://repository.its.ac.id/id/eprint/47588 |
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