Siberian Federal University

With the advent of a new class of materials—metamaterials—mathematical modeling has become an indispensable tool. Its application significantly accelerates the acquisition of new knowledge, as well as broadens the understanding of the deformation mechanisms in metamaterials. Typically, metamaterials are designed and optimized under the assumption of idealized geometry; however, this study develops an approach based on topological transformations. The subject of investigation is the unit cell of a metamaterial with a tetrachiral structure. The case of sequential transformation of the walls of a cubic cell, specifically the change in chirality, is considered. Despite a minor difference in porosity (0.4%), a substantial change in the effective Young’s modulus (59.7%) was observed. It has been demonstrated that a 50% transformation of the unit cell can result in a 148% increase in the effective Young’s modulus compared to a regular unit cell. A correlation between stiffness and the loading-twist coupling effect of the cell induced by the chiral structure was established