Towards Effective Properties of Two-Dimensional Tetrachiral Mechanical Metamaterials
Springer Proceedings in Physics, ISSN: 1867-4941, Vol: 1067 SPPHY, Page: 14-20
2024
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Conference Paper Description
The investigation is concerned with the mechanical behavior of samples of a two-dimensional tetrachiral mechanical metamaterial under uniaxial compression. The study is fulfilled numerically using finite element simulations. The base material is described within an elastic model. To study the influence of the metamaterial unit cell parameters on its effective mechanical properties, simulations are performed with independently varying geometric parameters of the chiral unit cell. Variation in ligament width is shown to have no effect on the mechanical behavior of the samples. It is found that a decrease in the base material volume of the metamaterial sample entails a decrease in the effective Young’s modulus. It is shown that the effective Poisson's ratio takes both positive and negative values. Parameters are identified that are responsible for the auxetic property of the metamaterial. The correlation of the effective properties and their relationship with the relative volume of the base material are analyzed.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85190246408&origin=inward; http://dx.doi.org/10.1007/978-981-97-1872-6_3; https://link.springer.com/10.1007/978-981-97-1872-6_3; https://dx.doi.org/10.1007/978-981-97-1872-6_3; https://link.springer.com/chapter/10.1007/978-981-97-1872-6_3
Springer Science and Business Media LLC
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