Print Email Facebook Twitter Rational design of soft mechanical metamaterials Title Rational design of soft mechanical metamaterials: Independent tailoring of elastic properties with randomness Author Mirzaali, Mohammad J. (TU Delft Biomaterials & Tissue Biomechanics; Politecnico di Milano) Hedayati, R. (TU Delft Biomaterials & Tissue Biomechanics) Vena, P. (Politecnico di Milano) Vergani, L. (Politecnico di Milano) Strano, M. (Politecnico di Milano) Zadpoor, A.A. (TU Delft Biomaterials & Tissue Biomechanics) Date 2017 Abstract The elastic properties of mechanical metamaterials are direct functions of their topological designs. Rational design approaches based on computational models could, therefore, be used to devise topological designs that result in the desired properties. It is of particular importance to independently tailor the elastic modulus and Poisson's ratio of metamaterials. Here, we present patterned randomness as a strategy for independent tailoring of both properties. Soft mechanical metamaterials incorporating various types of patterned randomness were fabricated using an indirect additive manufacturing technique and mechanically tested. Computational models were also developed to predict the topology-property relationship in a wide range of proposed topologies. The results of this study show that patterned randomness allows for independent tailoring of the elastic properties and covering a broad area of the elastic modulus-Poisson's ratio plane. The uniform and homogenous topologies constitute the boundaries of the covered area, while topological designs with patterned randomness fill the enclosed area. Subject ElasticityMetamaterialsChaosPoisson's ratioTopology To reference this document use: http://resolver.tudelft.nl/uuid:3bb79a9c-d9d2-4466-88b4-d56510b4e660 DOI https://doi.org/10.1063/1.4989441 Embargo date 2018-08-04 ISSN 0003-6951 Source Applied Physics Letters, 111 (5) Part of collection Institutional Repository Document type journal article Rights © 2017 Mohammad J. Mirzaali, R. Hedayati, P. Vena, L. Vergani, M. Strano, A.A. Zadpoor Files PDF 1.4989441.pdf 1.21 MB Close viewer /islandora/object/uuid:3bb79a9c-d9d2-4466-88b4-d56510b4e660/datastream/OBJ/view