Comparative study of auxetic geometrics by means of computer-aided design and engineering


Autoria(s): Álvarez Elipe, Juan Carlos; Diaz Lantada, Andres
Data(s)

01/10/2012

Resumo

Auxetic materials (or metamaterials) are those with a negative Poisson ratio (NPR) and display the unexpected property of lateral expansion when stretched, as well as an equal and opposing densification when compressed. Such geometries are being progressively employed in the development of novel products, especially in the fields of intelligent expandable actuators, shape morphing structures and minimally invasive implantable devices. Although several auxetic and potentially auxetic geometries have been summarized in previous reviews and research, precise information regarding relevant properties for design tasks is not always provided. In this study we present a comparative study of two-dimensional and three-dimensional auxetic geometries carried out by means of computer-aided design and engineering tools (from now on CAD–CAE). The first part of the study is focused on the development of a CAD library of auxetics. Once the library is developed we simulate the behavior of the different auxetic geometries and elaborate a systematic comparison, considering relevant properties of these geometries, such as Poisson ratio(s), maximum volume or area reductions attainable and equivalent Young's modulus, hoping it may provide useful information for future designs of devices based on these interesting structures.

Formato

application/pdf

Identificador

http://oa.upm.es/16838/

Idioma(s)

eng

Publicador

E.T.S.I. Industriales (UPM)

Relação

http://oa.upm.es/16838/1/INVE_MEM_2012_137695OR.pdf

http://iopscience.iop.org/0964-1726/21/10/105004/article

info:eu-repo/semantics/altIdentifier/doi/10.1088/0964-1726/21/10/105004

Direitos

http://creativecommons.org/licenses/by-nc-nd/3.0/es/

info:eu-repo/semantics/openAccess

Fonte

Smart Materials and Structures, ISSN 0964-1726, 2012-10, Vol. 21, No. 10

Palavras-Chave #Mecánica
Tipo

info:eu-repo/semantics/article

Artículo

PeerReviewed