Bending behavior of corrugated sandwich panels with various core shapes

Abstract The corrugated core sandwich structure consists of a corrugated sheet between two thin face sheets. Due to their high stiffness-to-mass ratio, metal sandwich panels in corrugated structures are an attractive industrial solution as structural components. Corrugated sandwich panels are often preferred in many applications since they are easy to manufacture process and low cost. The bending characteristics of aluminum corrugated sandwich panels with cores of various shapes subjected to three-point bending are investigated numerically in this paper. The core shapes are square, Y-form, trapezoid, diamond, triangle, sinusoid, hexagon, and symmetric Y-form. According to the numerical results, the symmetric y-form model showed optimum values for specific load-carrying capacity (SLCC) and specific energy absorption capacity (SEAC). The model that gives the optimum values by revising the symmetric y-form model has been determined. The revised model’s specific load-carrying capacity (SLCC) increased from 101.31 N·gr −1 to 106.89 N·gr −1 . The specific energy absorption capacity (SEAC) increased from 3.14 J·gr −1 to 3.71 J·gr −1 . It has been observed that the reduction of the section moment of inertia is also an essential factor in the collapse behavior of sandwich structures.