Abstract
Additive manufacturing is the most widely used approach to fabricating cellular structures. Research interests in auxetics are increasing due to their unique properties like impact energy absorption. In this work, a novel approach to enhance the mechanical properties of auxetics is proposed. A hybrid auxetic structure is proposed that is the combination of a re-entrant and a conventional honeycomb unit cell. A uniaxial quasi-static compression study is carried out on auxetics and hybrid auxetic structures loaded along the x and y directions. The deformation patterns of the structures are discussed to understand the failure modes. The results showed that the hybrid structure possesses better compressive strength and specific energy absorption than the auxetic structure. Experimental results are closely matching with numerical results. Subsequently, the deformation mode is discussed to understand the structural failure.
Published Version
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