<Abstarte>

The present paper reports on the post-yield behaviors of an auxetic structure, honeycomb

with representative re-entrant topology. Specimens were made of stainless steel and

polymer, respectively. Quasi-static uniaxial tensile tests were conducted in the two principal

directions, followed by simulations using the commercial code – ABAQUS 6.11-2. The

deformation, tensile stress-strain curves and Poisson’s ratio were of interest. A good agreement

was observed between the numerical simulations and the experimental results. Subsequently,

the effect of cell wall thickness and initial cell angle was studied by means of finite element

analysis. An analytical equation was also given for the yield stress of such materials under tension.
<全文連結>