Analisis Pengaruh Misalignment Center Deck Girder Terhadap Tegangan Setempat Pada Kapal Patroli

Azminulloh, Pramudya Ulul (2021) Analisis Pengaruh Misalignment Center Deck Girder Terhadap Tegangan Setempat Pada Kapal Patroli. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

Text 04111740000020-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2023. Download (7MB) | Request a copy

Abstract

Pemasangan sambungan center deck girder yang kurang tepat pada konstruksi geladak yang terletak di joint block kapal patroli menyebabkan terjadinya misalignment. Misalignment center deck girder dapat menimbulkan konsentrasi tegangan. Tegangan yang terjadi di sekitar center deck girder mengalami peningkatan akibat beban pelat deck & berat superstructure. Sehingga dilakukan analisis tegangan dengan acceptance criteria memenuhi atau tidak dengan tegangan ijin badan klasifikasi (BKI) dan aturan IACS.
Perhitungan tegangan pada misalignment center deck girder dilakukan dengan studi numerik menggunakan metode elemen hingga. Variasi yang dilakukan adalah model struktur geladak dengan misalignment center deck girder bagian face plate yang dimodelkan dengan 11 variasi misalignment, yaitu 0 mm; 0,5 mm; 1 mm; 1,5 mm; 2 mm; 2,5 mm; 3 mm; 3,5 mm; 4 mm; 4,5 mm; 5 mm. Pemodelan struktur geladak untuk perhitungan elemen hingga dilakukan dengan finite element analysis software.
Hasil analisis menunjukkan peningkatan tegangan pada variasi misalignment center deck girder. Variasi misalignment di atas 3 mm menghasilkan tegangan yang tidak memenuhi tegangan ijin BKI dan sesuai dengan aturan IACS No. 47. Besar nilai tegangan yang dihasilkan dari model tanpa misalignment menghasilkan nilai tegangan yang berbeda dengan model misalignment. Dimana semakin besar misalignment yang terjadi maka semakin besar juga nilai tegangan yang dihasilkan.

Kata kunci: center deck girder, misalignment, analisis tegangan, metode elemen hingga.
================================================================================================
Incorrect installation of the center deck girder connection on the deck construction located in the joint block of the patrol boat causes misalignment. Misalignment of the center deck girder can cause stress concentrations. The stresses that occur around the center deck girder have increased due to deck plate loads and the weight of the superstructure. So that a stress analysis is carried out with acceptance criteria that meets or does not meet the allowable stress classification bureau (BKI) and the IACS rules.
Calculation of stress on the center deck girder misalignment is carried out by numerical studies using the finite element method. The variations carried out are the deck structure model with the misalignment of the center deck girder on the face plate which is modeled with 11 variations of misalignment, namely 0 mm; 0,5 mm; 1 mm; 1,5 mm; 2 mm; 2,5 mm; 3 mm; 3,5 mm; 4 mm; 4,5 mm; 5 mm. The deck structure modeling for finite element calculations was carried out using finite element analysis software.
The results of the analysis show an increase in stress on variations in the center deck girder misalignment. Variations in misalignment above 3 mm produce stresses that do not meet the allowable stress of BKI and are in accordance with IACS rules No. 47. The magnitude of the voltage value generated from the model without misalignment produces a different voltage value from the misalignment model. Where the greater the misalignment that occurs, the greater the value of the resulting voltage.

Keywords: center deck girder, misalignment, stress analysis finite element method.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	center deck girder, misalignment, stress analysis, finite element method, analisis tegangan, metode elemen hingga.
Subjects:	T Technology > T Technology (General) T Technology > T Technology (General) > T57.62 Simulation
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Pramudya Ulul Azminulloh
Date Deposited:	31 Aug 2021 17:19
Last Modified:	31 Aug 2021 17:19
URI:	http://repository.its.ac.id/id/eprint/91390

Actions (login required)

View Item