Estructuras hexaquirales con coeficiente de Poisson negativo bajo carga uniaxial en el plano

Oscar Gerardo Castro Ardila; Gonzalo Fernando Casanova García; Yesid Aguilar Castro

Authors

Oscar Gerardo Castro Ardila Universidad del Valle
Gonzalo Fernando Casanova García Universidad del Valle
Yesid Aguilar Castro Universidad del Valle

Abstract

Currently, the study and applications of morphing structures with cellular configurations and negative effective Poisson’s ratio are of interest for the automotive and aerospace field, as also applications in optical, biological, microelectronic, structural and thermo-mechanical components. These structures have light weight, large shear stiffness and they resist large deformations in the elastic range of the constitutive material, if compared to a solid structure with the same material. This paper presents a numerical study of in-plane static behavior of hexachiral structure with negative effective Poisson’s ratio, using the finite element method. The results obtained suggest a better control of the parameters of the structures because the geometrical restrictions of real applications are taken into account, making the design more flexible and reliable by the type of desired

Author Biographies

Oscar Gerardo Castro Ardila, Universidad del Valle

Ingeniero Mecánico de la Universidad del Valle. Investigador, Grupo de Investigación en Mejoramiento Industrial GIMI, Escuela de Ingeniería Mecánica, Universidad del Valle, Cali, Colombia.

Gonzalo Fernando Casanova García, Universidad del Valle

Ingeniero Mecánico. Magíster en Ingeniería de la Universidad delValle (Colombia). Profesor tiempo completo, Grupo de Investigación en
Mejoramiento Industrial GIMI, Escuela de Ingeniería Mecánica, Universidad
del Valle.

Yesid Aguilar Castro, Universidad del Valle

Ingeniero Mecánico, Universidad del Valle (Colombia). Magíster en
Metalurgia y Ciencia de Materiales de la Universidad Central de Venezuela
y Doctor en Nuevos Materiales y sus Tecnologías, Universidad Politécnicade Valencia (España). Profesor tiempo completo, Grupo de Investigación en
Materiales Compuestos y Grupo de Investigación en Tribología, Polímeros,
Metarlurgia de Polvos y Transformación de Residuos Sólidos, Escuela de
Ingeniería de Materiales, Universidad del Valle.

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