Title
Design and optimization of lattice structures and mechanical metamaterials for additive manufacturing.
Abstract
Metamaterials are manmade advanced materials which exhibit physical and mechanical properties that are not usually found in nature. An auxetic metamaterial is one of the kind that shows a characteristic mechanical property called “Negative Poisson’s ratio” or NPR, unlike any other natural materials that have a positive Poisson’s ratio. Auxetic metamaterials also show interesting physical and mechanical properties like vibration isolation, stiffness, impact energy absorption etc. The design and development of the programable auxetic metamaterial lattice structure require advanced CAD techniques and the hybrid manufacturing processes that are also under study during the research. This novel material and hybrid manufacturing process unveils the new possibilities of the fabrication of advanced metamaterials that are not achievable through conventional additive manufacturing processes. The 2D/3D models of novel auxetic metamaterial lattice structures can be produced intuitively, by generative design, by topology optimization or through implicit/explicit mathematical equations.