Metamaterial Design and Additive Manufacturing

Chapter 2: Mechanical metamaterials

Bo Song^a; Pengfei Wang^b; Yusheng Shi^a    a School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China^b China Aerospace Science and Technology Innovation Research Institute, Beijing, China

Abstract

The level set-based topology optimization method was adopted to design novel lattice structures. Ti-6Al-4V topology-optimized lattice structures with 30% volume of solid materials were successfully fabricated by selective laser melting (SLM). A study on the mechanical properties and energy absorption capability of the topology-optimized structures was also conducted through quasistatic compressive testing. The findings illustrated that the proposed topology ...