Analytic analysis of auxetic metamaterials through analogy with rigid link systems

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Daniel Rayneau-Kirkhope
  • Chengzhao Zhang
  • Louis Theran
  • Marcelo A. Dias

Organisaatiot

  • Massachusetts Institute of Technology
  • Aarhus University
  • University of St Andrews

Kuvaus

In recent years, many structural motifs have been designed with the aim of creating auxetic metamaterials. One area of particular interest in this subject is the creation of auxetic material properties through elastic instability. Such metamaterials switch from conventional behaviour to an auxetic response for loads greater than some threshold value. This paper develops a novel methodology in the analysis of auxetic metamaterials which exhibit elastic instability through analogy with rigid link lattice systems. The results of our analytic approach are confirmed by finite-element simulations for both the onset of elastic instability and post-buckling behaviour including Poisson’s ratio. The method gives insight into the relationships between mechanisms within lattices and their mechanical behaviour; as such, it has the potential to allow existing knowledge of rigid link lattices with auxetic paths to be used in the design of future buckling-induced auxetic metamaterials.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli20170753
Sivut1-12
JulkaisuProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Vuosikerta474
Numero2210
TilaJulkaistu - 1 helmikuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 18652321