نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
In this paper, the energy absorption behavior of a hemispherical truss with a porous core geometry in two cases, honeycomb and triangular, is investigated numerically and experimentally. For this purpose, a hemispherical truss with a honeycomb geometry is fabricated by connecting metal wires of a certain length and diameter. To increase the accuracy and quality of the laboratory-produced sample, a polymer template is fabricated using a 3D printer and placed between two rigid plates in a universal testing machine. At the start of the test, the movable rigid plate slowly moves towards the stationary rigid plate at a constant speed of 2 mm/min. In this process, which is carried out quasi-statically, the phenomenon of collapse and plastic deformation will occur in the truss. Finite element analysis of the same process is performed with 4 different wire lengths, 4 different wire diameters, 3 different materials, and 2 different geometries using Abaqus software. The results of the analyses show that the structure with triangular cell geometry, a wire diameter of 6 mm, a wire length of 30 mm, and an aluminum wire material has the best energy absorption in the studied range.
کلیدواژهها English
