Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
AUXETIC STRUCTURE DESIGN USING STRUCTURAL OPTIMIZATION TECHNIQUES
Submission Author:
Paula Fregnani , SP
Co-Authors:
Paula Fregnani, Cicero Lima
Presenter: Paula Fregnani
doi://10.26678/ABCM.COBEM2019.COB2019-0627
Abstract
The material with a negative Poisson’s ratio is known as auxetic and has not convectional behavior, since they expand laterally when tensioned and contract all sides when compressed. In the last decades, the importance of this metamaterial has gained notorious prominence in the scientific community, aiming at engineering applications. The main motivation of this work is to contribute with a more systematic methodology to design of the auxetic structures, make it independent of the designer expertise. For this, some computational simulation tools have been adopted, such as CAD for geometry modeling and CAE software for the finite element analyses. With the parametric optimization results were possible to create an optimized structure, considering an auxetic behavior using a conventional material. This example demonstrated in this study an improvement of 107% in the auxetic behavior (negative Poisson’s ratio).
Keywords
Optimization, Auxetic Structure, Computational simulation, Negative Poisson's Ratio
