Understanding mechanical behavior of metallic foam with hollow struts using the hollow pentagonal dodecahedron model. (June 2020)

• Record Type: Journal Article
• Authors: Dai, Rui; Wang, Meng; Wang, Dini; Hu, Zengrong; Green, Matthew D.; Nian, Qiong
• Is Part Of: Scripta materialia. Number 182(2020)
• Page Start: 114
• Page End: 119
• Publication Date: 2020-06
• Subjects: Cellular material -- Metallic foam -- Hollow strut -- Pentagonal dodecahedron -- Elastic modulus; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.03.001
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Nickel (Ni) foam with hollow struts, as one type of ultralight stochastic cellular material, can be simply manufactured by electroplating on a thermally or chemically removable template. A fundamental understanding is required to create a consistent lattice model with capability to capture its mechanical behavior. Herein, an unprecedented hollow pentagonal dodecahedron (HPD) model is proposed with a novel 3D packing architecture. HPD model reveals the scaling of Young's modulus (E) to relative density ( ρ ′) in the factor of 2, which agrees well with uniaxial compression tests. This simplified model paves a way to investigate the cellular material with hollow struts. Graphic abstract: Image, graphical abstract