Compressive properties and energy absorption of BCC lattice structures with bio-inspired gradient design

投稿的翻译标题: 基于仿生梯度设计的BCC点阵结构的压缩性能和能量吸收

Fuchao Gao, Qinglei Zeng*, Jing Wang*, Zengfei Liu, Jun Liang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

21 引用 (Scopus)

摘要

Inspired by the gradient structure of the nature, two gradient lattice structures, i.e., unidirectional gradient lattice (UGL) and bidirectional gradient lattice (BGL), are proposed based on the body-centered cubic (BCC) lattice to obtain specially designed mechanical behaviors, such as load-bearing and energy absorption capacities. First, a theoretical model is proposed to predict the initial stiffness of the gradient lattice structure under compressive loading, and validated against quasi-static compression tests and finite element models (FEMs). The deformation and failure mechanisms of the two structures are further studied based on experiments and simulations. The UGL structure exhibits a layer-by-layer failure mode, which avoids structure-wise shear failure in uniform structures. The BGL structure presents a symmetry deformation pattern, and the failure initiates at the weakest part. Finally, the energy absorption behaviors are also discussed. This study demonstrates the potential application of gradient lattice structures in load-transfer-path modification and energy absorption by topology design. [Figure not available: see fulltext.].

投稿的翻译标题基于仿生梯度设计的BCC点阵结构的压缩性能和能量吸收
源语言英语
文章编号421345
期刊Acta Mechanica Sinica/Lixue Xuebao
38
1
DOI
出版状态已出版 - 1月 2022

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引用此

Gao, F., Zeng, Q., Wang, J., Liu, Z., & Liang, J. (2022). Compressive properties and energy absorption of BCC lattice structures with bio-inspired gradient design. Acta Mechanica Sinica/Lixue Xuebao, 38(1), 文章 421345. https://doi.org/10.1007/s10409-021-09013-3