Design and Characterization of Orthotropic Re-Entrant Auxetic Structures Made via EBM Using Ti6Al4V and Pure Copper

Access full-text files

Date

2011-08-17

Authors

Yang, L.
Harrysson, O.
West, H. II
Cormier, D.

Journal Title

Journal ISSN

Volume Title

Publisher

University of Texas at Austin

Abstract

An orthotropic 3D re-entrant honeycomb structure that exhibits a negative Poisson’s ratio was designed and fabricated via the electron beam melting (EBM) process. The modeling work established the relationships between various structural parameters and the mechanical properties of the auxetic structures. Compressive tests were performed on the re-entrant honeycomb samples made with Ti6Al4V as well as pure copper. Results of the strength, modulus and energy absorption for the two materials were compared with the theoretical models in order to verify the theoretical predictions.

Description

LCSH Subject Headings

Citation