Design of lightweight lattice meta-structures and approaches to manipulate their multi-functional mechanical properties

WU Wenwang; XIA Re

doi:10.6052/1000-0992-22-002

Volume 52 Issue 3

Sep. 2022

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Wu W W, Xia R. Design of lightweight lattice meta-structures and approaches to manipulate their multi-functional mechanical properties . Advances in Mechanics, 2022, 52(3): 673-718 doi: 10.6052/1000-0992-22-002

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Wu W W, Xia R. Design of lightweight lattice meta-structures and approaches to manipulate their multi-functional mechanical properties . Advances in Mechanics, 2022, 52(3): 673-718 doi: 10.6052/1000-0992-22-002

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Design of lightweight lattice meta-structures and approaches to manipulate their multi-functional mechanical properties

doi: 10.6052/1000-0992-22-002

WU Wenwang^{1, 2
,
,},
XIA Re^{3
,
,}

1.
State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean & Civil Engineering, Shanghai 200240, China
2.
Department of Engineering Mechanics, School of Naval Architecture, Ocean & Civil Engineering, Shanghai 200240, China
3.
Key Laboratory of Hydraulic Machinery Transients (Wuhan University), Ministry of Education, Wuhan 430072, China

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Corresponding author: wuwenwang@sjtu.edu.cn; xiare@whu.edu.cn
Received Date: 2022-01-13
Accepted Date: 2022-04-19

Available Online: 2022-04-20

Publish Date: 2022-09-25

Abstract

Abstract

With the rapid development of advanced manufacturing technology, multidisciplinary integration, and artificial intelligence technology, high-end equipment demonstrates the development trends of lightweight, integrated, composited, multi-functional, intelligent, flexible, and biomimetic features. Traditional structural research has encountered many intrinsic problems that constrain devices, and instruments performances, such as structural design and manufacturing are separated from each other, relative low manufacturing efficiency of complex structures, practical structural performances, and reliability of manufactured structures are significantly lower than theoretical predictions, insufficient multi-functional integration of structures, and high costs. In addition, materials and structures for constructing advanced industrial equipments are required to maintain reliable performances and endure extremely crucial service environments. It is urgent to carry out research on the synergy effects of design, manufacture, function, and applications of structures, thus providing theoretical foundations and technical support for solving the key technical problems of advanced manufacturing strategic plans. Lightweight multi-functional lattice meta-structures exhibit extraordinary mechanical performance advantages of lightweight, specific strength, impact energy absorption, shock absorption, and noise reduction advantages, and demonstrate great industrial application potentials in aerospace, transportation, national defense, biomedical, energy, machinery, equipment, and other industrial fields. Considering the above-mentioned status-quo, inspired by the multi-scale microstructures of the polycrystalline, the mechanical design of lightweight multi-functional lattice meta-structures is reviewed in this paper, and is elaborated from the perspectives of typical design methods, such as nodes, strut components, unit cell types, dual-phase structures, gradient structures and hierarchical structures of lattice structures. Afterward, physical foundations for design innovations based on multi-scale microstructures of polycrystalline are explained, rational regulations of multi-functional mechanical properties, and the underlying deformation and failure mechanisms are demonstrated.
- multifunctional integration,
- lattice meta-structures,
- mechanical properties,
- polycrystalline microstructures

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