Virtual and Physical Prototyping ( IF 10.6 ) Pub Date : 2021-07-27 , DOI: 10.1080/17452759.2021.1954405 Junhui Zhang 1 , Hsinpu Huang 1 , Gan Liu 2 , Huaizhi Zong 1 , Chao Zhang 1
ABSTRACT
Lattice structures have been widely used for lightweight structures and energy absorption applications, yet there remain persistent challenges to develop high-performance lattice structures. Existing lattice structures are mainly made by uniform or graded units, some work has been focused on the hybrid lattice structures that combine two or more different units. In this work, two hybrid lattice block structures, named GO_embeded and GO_enfolded, were designed based on two kinds of basic unit cells (Grid unit and Octet unit) and then additively manufactured, and their performances of stiffness and energy absorption were studied. The results show that the stiffness of the hybrid lattice blocks could be comparable to the uniform lattice blocks when they have the same relative density. However, the hybrid lattice blocks have better energy absorption capability relative to uniform lattice blocks. This study provides a basis for the performance of hybrid lightweight structure.
中文翻译:
增材制造混合晶格结构的刚度和能量吸收
摘要
晶格结构已广泛用于轻质结构和能量吸收应用,但开发高性能晶格结构仍然存在挑战。现有的晶格结构主要由均匀或分级单元构成,一些工作已集中在结合两个或多个不同单元的混合晶格结构上。在这项工作中,基于两种基本晶胞(Grid unit 和 Octet unit)设计了两种混合晶格块结构,命名为 GO_embeded 和 GO_enfolded,然后增材制造,并研究了它们的刚度和能量吸收性能。结果表明,当它们具有相同的相对密度时,混合点阵块的刚度可与均匀点阵块相媲美。然而,相对于均匀晶格块,混合晶格块具有更好的能量吸收能力。该研究为混合轻量化结构的性能提供了依据。