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Mohammadi, Kaivan (author), Shafia, Moein (author), Akbari, Javad (author), Hedayati, R. (author)Pentamodes (first conceived theoretically by Milton and Cherkaev) are a very interesting class of mechanical metamaterials that can be used as building blocks of structures withdecoupled bulk and shear moduli. The pentamodes usually are composed of double cone-shaped struts with the middle diameter being large and the end diameters being tiny...journal article 2024
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Hedayati, R. (author), Yousefi, Armin (author), Dezaki, Mohammadreza Lalegani (author), Bodaghi, Mahdi (author)Both 2D and 3D re-entrant designs are among the well-known prevalent auxetic structures exhibiting negative Poisson's ratio. The present study introduces novel analytical relationships for 2D re-entrant hexagonal honeycombs for both negative and positive ranges of the cell interior angle θ (θ<0 showing a negative Poisson's ratio). The...journal article 2023