Vibration analysis of orthotropic materials with simulation in wooden ship construction

Abstract

We must know the construction characteristics so that the primary engine vibration can be distributed evenly. The analysis is carried out on the seamless structure, which is considered the ideal structure. The experimental Modal Analysis (EMA) method is used to see the characteristics of the dynamic load distribution in wooden ship construction. Simulation is used to find out which part of the construction has the highest stress concentration. Each construction part is grouped into the rigid base construction section (keel, floor, engine bed, and canal) and the elastic hull construction section (frame, hull board, and hull stringers). The simulation results show that in the radial direction of the fiber, with horizontal vibrations, the smallest amplitude occurs in the frame, while the largest occurs in the channel. In vertical vibrations, the smallest amplitude occurs at the keel and the largest in the hull board. In the tangential fiber direction, with horizontal vibrations, the smallest amplitude occurs in the hull board while the largest occurs in the engine bed area. In vertical vibrations, the smallest amplitude occurs at the keel while the largest occurs in the canal and engine bed.