Analysis Strength Structure Fising Vessel of Composit Sandwich Plate System Using Finite Element Method

Abstract

Fiberglass composite material is currently widely used as an alternative material or substitute material for metal and wood materials for the manufacture of fishing boats, because it has its own advantages, among others, easily formed in accordance with needs, has good strength and stiffness. However, in the operation of the ship the bow section often experiences a collision or collision so that when the ship is operating and leaning on the dock which causes a collision where the kinetic energy of the boat turns into a collision energy absorbed by the boat's hull that is hit by a collision. The energy damaged the hull of the boat that was hit, so the front of the ship needs to be done by adding a new material that is a composite sandwich made with the aim of optimal weight efficiency, but has high rigidity and strength. There are many variations in the definition of sandwich composites, but the main factor of the material is the lightweight core, thus reducing the specific gravity of the material and the strength of the skin layer which gives strength to the sandwich composite. This research was carried out a static structural analysis of composite sandwich material using Ansys Workbench 14.5 software. A model is designed and analyzed using 3D CAD software, which is fore ships that have the potential to experience collisions. From the simulation results of the Fenite element method, the maximum principal stress of the model shows that the maximum point is 11.6 MPa. The maximum stress occurs at the ivory bottom, which is 6.9759 kN/m2 or 6.97 kPa, this occurs due to the bow of the fishing boat experienced a great imposition.