A Novel Sinusoidal Sandwich Structure: Experimental and Numerical Investigation of Three-Point Bending Behavior
摘要
Sandwich structures have garnered significant attention from researchers due to their high strength-to-weight ratio. In this study, a sandwich structure with sinusoidal core and facesheets in novel unit cell arrangements is proposed and investigated, and its behavior is investigated under three-point bending tests both experimentally and numerically. To design the sandwich beams, four different unit cells with various arrangements are introduced, and sandwich beams are constructed by repeating these proposed patterns. The samples were fabricated using an additive manufacturing technique via 3D printing, and all samples were prepared for the experimental three-point bending tests. Numerical modeling was conducted using finite element software. Force–displacement curves from the three-point bending tests were obtained through both numerical simulations and experimental tests, and the results were compared. Using the obtained diagrams, parameters such as absorbed energy (