Optimization Analysis of Coal Transport Pontoon Design through Frame Spacing Modification Using the Finite Element Method
Analisis Optimasi Desain Ponton Pengangkut Batu Bara dengan Perubahan Jarak Gading Menggunakan Metode Elemen Hingga
Keywords:
Pontoon, Frame Spacing, Structural Optimization, Finite Element Method (FEM), Sagging, Hogging, Cost EfficiencyAbstract
Material shortages caused by the pandemic have led to a surge in raw material prices, resulting in increased production costs. Therefore, optimization efforts are required to reduce production costs without compromising the structural quality of the pontoon. One optimization approach that can be applied is modifying the frame spacing. This study compares two frame spacing variations, 0.60 m and 0.65 m, against the initial design of 0.61 m to determine the most optimal configuration. Stress analysis for each structural model was conducted using software with a Finite Element Method (FEM) approach under three conditions: still water, sagging, and hogging. The results show that the structural profile with a frame spacing of 0.60 m has smaller dimensions compared to the 0.65 m spacing, due to a lower section modulus value. The stress analysis indicates that the highest allowable stress occurs under the sagging condition with a frame spacing of 0.61 m, reaching 84.8 MPa. The most optimal frame spacing is 0.60 m, which achieves a weight optimization of 5.3% and a cost reduction of 9.4%
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