Evaluation of double-bottom structure performance under fire accident using nonlinear finite element approach

Abstract

This study was conducted to evaluate the response of the double-bottom structure on a ship when a fire phenomenon involves temperature elevation and depreciation. Fire accidents on ships can be very detrimental, especially since ships are the main transportation for export and import activities. Therefore, this research is needed to reduce the risk of fire accidents on ships, especially on double-bottom structures. This study used the finite element modeling method in ABAQUS software. The research results found that the Von Mises stress contour, strain, and displacement values were influenced by the type of material, temperature, and plate thickness. Based on the results evaluated using the multi-attribute decision-making method, model 32 is the best model, while model 95 is the worst. Concurrently, from sensitivity analysis, it was found that temperature plays a significant role in the results of Von Mises Stress, Strain, and Displacement. The results indicated that the main factor influencing the Von Mises stress, strain, and displacement is the loading in the form of temperature, followed by material properties and plate thickness.

Keywords

• fire-structure interaction
• finite element modelling
• von mises stress
• displacement
• plastic strain