Ahmad Firdaus, . (2024) ANALISIS KEKUATAN STRUKTUR RAMP DOOR HALUAN PADA KAPAL KMP LEGUNDI 5000GT DENGAN FINITE ELEMENT METHODE. Skripsi thesis, Universitas Pembangunan Nasional Veteran Jakarta.
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Abstract
The planning of the ramp door construction at the Samudra Marine Indonesia shipyard in Bojonegoro shows that although the ramp door has been modeled, an in-depth analysis of the structural stress and strength has not been carried out. This study aims to fill this gap by conducting a comprehensive analysis of the ramp door stress and strength to ensure that the design meets the established safety and strength standards. This process involves detailed data on the ramp door and a complete layout, following BKI (Indonesian Classification Bureau) regulations, and applying the principles of engineering mechanics, stress analysis, and finite element methods. The analysis was carried out using Ansys, Onshape, and AutoCAD software to model the ramp door, focusing on the final results in the form of maximum stress and largest deformation. The material used is steel with BKI KI-A36 standards, which has material parameters such as tensile strength of 460 MPa, yield strength of 300 MPa, elongation of 31%, Young's modulus of 200 GPa, Poisson's ratio of 0.32, and density of 7800 kg/m³. The meshing process was carried out and the force was applied to the fulcrum located in the ramp door structure. Static analysis was carried out by considering six variations of loads for each type of vehicle. For an SUV with a maximum weight of 3,449 tons, the maximum stress was recorded at 24.89 MPa with a maximum deformation of 8.7459 mm. A bus weighing up to 24 tons showed the highest stress of 91.568 MPa and a maximum deformation of 48.234 mm. A wingbox tronton with a maximum weight of 27.5 tons experienced the highest stress of 128.44 MPa and a maximum deformation of 61.33 mm. A truck with a maximum weight of 32.85 tons showed the highest stress of 221.61 MPa and a maximum deformation of 63.351 mm, while a tronton truck with a maximum weight of 38.2 tons recorded the highest stress of 279.05 MPa and a maximum deformation of 123.93 mm. The results of the analysis showed that the stress should not exceed the maximum permissible limit (300 MPa) according to BKI regulations. The calculated safety factor shows that for SUV, the safety factor is 12.5; for bus, the safety factor is 3.28; for wingbox tronton, the safety factor is 2.33; for truck, the safety factor is 1.35; and for tronton truck, the safety factor is 1.07. Therefore, under various loading conditions, the safety factor meets the BKI standard, ensuring that the ramp door construction remains safe.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Additional Information: | [No.Panggil: 2010313050] [Pembimbing 1: Wiwin Sulistyawati] [Pembimbing 2: Amir Marasabessy] [Penguji 1; Fakhri Akbar Ayub] [Penguji 2: Purwo Joko Suranto] [Penguji 3; Fathin M. Mahdhudhu] |
| Uncontrolled Keywords: | Ramp door, Finite element method, Safety factor |
| Subjects: | V Naval Science > V Naval Science (General) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Divisions: | Fakultas Teknik > Program Studi Teknik Perkapalan (S1) |
| Depositing User: | AHMAD FIRDAUS |
| Date Deposited: | 08 Aug 2024 07:00 |
| Last Modified: | 08 Aug 2024 07:27 |
| URI: | http://repository.upnvj.ac.id/id/eprint/32556 |
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