DESIGN AND FINITE ELEMENT ASSESSMENT OF FUNCTIONALLY GRADED AUXETIC STRUCTURES

Authors : Mert Özen, Hamit Kenan, C Oktay Azeloğlu

Pages : 303-315

Doi:10.46519/ij3dptdi.1418791

View : 110 | Download : 124

Publication Date : 2024-12-30

Article Type : Research Paper

Abstract :The development of lightweight structures that utilize minimal material while maintaining desired mechanical properties has become increasingly significant with advancements in manufacturing technologies, attracting the attention of researchers. Additive manufacturing methods have enabled the rapid production and testing of new design prototypes, thereby accelerating research in this domain. This study aims to investigate new designs through the functional grading approach applied to auxetic structures. Drawing on established structural patterns from the literature, three patterns were selected for this study. These patterns were modeled with varying wall thicknesses in line with the functional grading approach, and static analyses were conducted using the Ansys Workbench program. For the static analysis, a uniform deformation value was applied to each structure, and the reaction forces at the fixed end were used as the comparison criterion. When the re-entrant, rcw-honeycomb, and elliptical patterns were redesigned using the functional grading approach, their weights increased by 13%, 9%, and 12%, respectively. However, the reaction forces, which serve as an indicator of the structures\\\' load-carrying capacity, showed increases of 68%, 56%, and 43%, respectively. These results underscore the effectiveness of the functional grading approach in enhancing the load capacity of auxetic structures.
Keywords : Auxetic Structure, Functionally Graded Structure, Static Analysis