Performance Optimization of Auxetic Structures on Energy Absorption of Cylindrical Sandwich Using Taguchi and ANOVA Methods

High engineering requirements of shock absorbers have increased interest in auxetic materials, which higher specific energy absorption performance compared to conventional solid absorbers. Last decade, many optimization studies were conducted improve the tubular structures. Most focused on adding inner and outer shells thin-walled with different types lattice structures enhance cylindrical sandwiches. There are limited thicker-walled tubes their related shell thicknesses optimize performance. In this study, thickness core (1.2 mm, 1.6 2 mm), (16 20 24 structure (Re-Entrant Circular, SiliComb, ArrowHead) optimized The Taguchi method was used determine optimum parameters for addition, effect ratio investigated using ANOVA method. properties sandwiches determined drop-weight test. highest obtained a 1.2 mm 16 an SiliComb lattice. It that geometry most effective parameter sandwiches, rate 61.62%.