Influence of faceplate thickness reduction on the strength of sandwich structure under static compression loading

Abstract Sandwich structures are increasingly used to replace conventional stiffened plate ship structures. The sandwich plate thickness design is determined based on the strength index (R) value. The sandwich plate thickness design is flexible because the core and faceplate thicknesses can be changed according to the desired safety factor. This faceplate and core thickness difference has influenced structural strength, deformation, weight, and other structural characteristics. This study analysed the effect of different faceplate thicknesses on the performance of sandwich structures on barge decks subject to static compression loading. The performance of the sandwich structure on the deck carrying bulk cargo under several loading conditions was evaluated using the finite element method to obtain a general consideration in determining the faceplate thickness for the sandwich structure. Reducing faceplate thickness significantly reduces weight, but it is also essential to prioritize strength to ensure the sandwich structures are safe, efficient, and compliant with all necessary standards and regulations.