Print Email Facebook Twitter Rational design and additive manufacturing of grain boundary-inspired, multi-architecture lattice structures Title Rational design and additive manufacturing of grain boundary-inspired, multi-architecture lattice structures Author Yang, J. (TU Delft Biomaterials & Tissue Biomechanics; Chongqing University) Chen, Xiaohong (Chongqing University; Northwestern Polytechnical University) Sun, Yuanxi (Chongqing University) Feng, Chen (Chongqing University) Yang, Zheng (Chongqing University) Zadpoor, A.A. (TU Delft Biomaterials & Tissue Biomechanics) Mirzaali, Mohammad J. (TU Delft Biomaterials & Tissue Biomechanics) Bai, Long (Chongqing University) Date 2023 Abstract The advent of additive manufacturing has facilitated the design and fabrication of hybrid lattice structures with multiple morphologies. These structures combine multiple distinct architectures into a single structure with an exceptional performance that far exceeds that of each constituting architecture. However, combining strut-based lattices poses serious challenges in establishing effective connections, primarily due to complications in formulating mathematical expressions. Here, we introduce a novel approach, inspired by the connections observed in the grain boundaries of polycrystalline materials, to design the interconnections of hybrid structures. This strategy involves shrinking the unit cell linkage, thereby addressing the difficulty of forming efficient connections at arbitrary spatial interfaces within strut-based lattice structures. We then use the relevant design theories to tune the performance of these connections and simplify the design process for hybrid structures – even for inexperienced designers. Our experimental observations confirm the efficacy of the proposed strategy, bridging the knowledge gap in the design of connected strut-based multi-lattice structures. Furthermore, this approach enhances the design of tailored hybrid structures and fosters the development of metamaterials with advanced, unique functionalities. The proposed approach has important implications for the development of designer materials, with applications in medical devices, (soft) robotics, and implants. Subject Additive manufacturingHybrid structuresMechanical metamaterialsMulti-architecture lattices To reference this document use: http://resolver.tudelft.nl/uuid:a54db7b5-b20e-4b98-8fb0-290739839170 DOI https://doi.org/10.1016/j.matdes.2023.112448 ISSN 0264-1275 Source Materials & Design, 235 Part of collection Institutional Repository Document type journal article Rights © 2023 J. Yang, Xiaohong Chen, Yuanxi Sun, Chen Feng, Zheng Yang, A.A. Zadpoor, Mohammad J. Mirzaali, Long Bai Files PDF 1_s2.0_S0264127523008638_main.pdf 11.23 MB Close viewer /islandora/object/uuid:a54db7b5-b20e-4b98-8fb0-290739839170/datastream/OBJ/view