Salsabila, Wina Kurnia Fitri (2021) Optimasi Cantilever Kapal Sesuai Peraturan Biro Klasifikasi Indonesia Menggunakan Bahasa Pemrograman C#. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Abstrak—Cantilever merupakan konstruksi pada kapal yang dapat menggantikan fungsi pillar. Dalam peraturan BKI tidak terdapat rumus perhitungan cantilever secara langsung
sehingga dibutuhkan pendekatan untuk menghitung modulus cantilever yang memenuhi persyaratan tegangan ijin serta ukuran cantilever yang optimum dari modulus tersebut. Tugas
akhir ini merancang sebuah program komputer mengenai optimasi cantilever kapal menggunakan bahasa pemrograman C#. User perlu memasukkan nilai data kapal seperti ukuran
utama dan kondisi persyaratan lain agar program dapat menghitung secara urut mulai dari beban dinamis, beban geladak cuaca, beban geladak muatan, tebal pelat geladak, lebar pelat efektif, modulus minimum, modulus desain, hingga bracket. Modulus minimum yang diperlukan untuk memenuhi tegangan ijin dihitung menggunakan konsep reaksi tumpuan pada 11 titik kelipatan 0,1 x/L. Iterasi dilakukan pada tinggi web cantilever dan data ukuran optimum cantilever
ditampilkan pada tabel. Validasi hasil perhitungan dilakukan dengan cara membandingkan hasil perhitungan secara manual dengan hasil perhitungan menggunakan program. Pengujian
program dilakukan menggunakan variasi rasio ujung cantilever sebesar 1:1, 1:2, dan 1:3, serta variasi tebal cantilever 6mm, 8mm, 10mm, 12mm, 14mm, dan 16mm. Selisih modulus desain
yang didapatkan dari hasil pengujian bervariasi antara 0-5% dengan selisih modulus desain rata-rata sebesar 0.984%. Hasil Pengujian tersebut menunjukkan bahwa semakin besar tebal pelat yang digunakan maka tinggi web yang dihasilkan menjadi lebih kecil dan berat cantilever yang dihasilkan semakin besar.
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Cantilever is one of the ship’s construction that can replace the pillar function. In BKI regulations there is no direct calculation formula for cantilever so an approach
is needed to calculate the cantilever modulus that meets the permissible stress and optimum size of cantilever obtained from that modulus. This final project designed a computer program on ship’s cantilever optimization using the C# programming. User needs to input ship’s data such as main dimensions and other required conditions so that program can calculate in order starts from dynamic load, weather deck load, cargo deck load, deck plate thickness, effective
width of plate, minimum modulus, design modulus, up to bracket. The minimum modulus required to meet the permissible stress is calculated using the concept of a focal reaction at 11 points multiple of 0,1 x/L. Iterations are performed at the web height of the cantilever and
optimum size data is displayed on the table. Calculation results validation is done by comparing the manual calculation results with calculation results using program. Program testing was conducted using variations in cantilever end ratios of 1:1, 1:2, and 1:3, as well as variations
in cantilever thickness of 6mm, 8mm, 10mm, 12mm, 14mm, and 16mm. The difference in design modulus obtained from the test results varies between 0-5% with an average modulus difference of 0,984%. The test results show that the bigger plate thickness taken for cantilver, the web height of cantilever will be smaller and the weight of cantilever will be heavier.
Item Type: | Thesis (Undergraduate) |
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Uncontrolled Keywords: | Cantilever, Modulus, Optimasi, Tegangan |
Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture |
Divisions: | Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis |
Depositing User: | Wina Kurnia Fitri Salsabila |
Date Deposited: | 03 Sep 2021 01:58 |
Last Modified: | 03 Sep 2021 01:58 |
URI: | http://repository.its.ac.id/id/eprint/91347 |
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