Design of a porous material with isotropic negative Poisson’s ratio
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- 作者：Giorgio Carta giorgio_carta@unica.it" class="auth_mail" title="E-mail the corresponding author ; Michele Brun ; mbrun@unica.it" class="auth_mail" title="E-mail the corresponding author ; michele.brun@dimcm.unica.it" class="auth_mail" title="E-mail the corresponding author ; Antonio Baldi antonio.baldi@dimcm.unica.it" class="auth_mail" title="E-mail the corresponding author
- 关键词：Auxetic ; Negative Poisson&rsquo ; s ratio ; Metamaterials ; Porous medium ; Digital Image Correlation ; Photoelasticity
- 刊名：Mechanics of Materials
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：97
- 期：Complete
- 页码：67-75
- 全文大小：3606 K
文摘
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We propose the design of an isotropic porous structure with negative Poisson’s ratio.
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Isotropy is due to the threefold symmetry of the arrangement of the voids.
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Poisson’s ratio is determined experimentally through Digital Image Correlation.
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The experimental findings match very well with the results of numerical simulations.
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Periodic analysis is employed to determine the effective properties of the structure.