Topology optimization-guided lattice composites and their mechanical characterizations

Song, Jian; Wang, Yuejiao; Zhou, Wentao; Fan, Rong; Yu, Bin; Lü, Yang; Li, Lixiao

doi:10.1016/j.compositesb.2018.12.027

Cited by 77 publications

(28 citation statements)

References 32 publications

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“…Alternatively, TO method for lattice structures [46][47][48][49] may be another solution for the design of the aircraft spoiler. However, considering that the design is a large-scale problem, enormous amount of computing will be involved, especially if one wants to get the fine structures inside the aircraft spoiler [50].…”

Section: Resultsmentioning

confidence: 99%

Designing a Sandwich Aircraft Spoiler with Lattice Structure Cores

Ou¹,

Liu²,

He³

et al. 2019

Preprint

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By combing continuum topology optimization (TO) method and lattice structure technique, a sandwich aircraft spoiler with a high stiffness-to-weight is designed. TO method is served to produce the shell of the aircraft spoiler and the lattice structure, used as cores, is employed to support the shell. TO problem is established as maximizing the stiffness of the structure with limited material volume. Density-based method is utilized to achieve a 0/1 solution. We then empirically replace the core of the aircraft spoiler by using 3D kagome lattice structure. Two different materials, i.e., aluminum alloy and titanium alloy, are synthetically applied to further reduce the weight and simultaneously improve the strength of the aircraft spoiler. Numerical simulations are conducted to show that the designed aircraft spoiler can meet the service environment with a reduction of its weight by approximately 80% when compared with that of the initial design model. Finally, we have fabricated the designed model with photosensitive resin by using 3D printing technique.

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Section: Resultsmentioning

confidence: 99%

Designing a Sandwich Aircraft Spoiler with Lattice Structure Cores

Ou¹,

Liu²,

He³

et al. 2019

Preprint

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“…An adaptive generation technology of lightweight honeycomb 3D-printing path was proposed, which provided a new idea for direct printing generation of lightweight structure with improved local load-carrying performance in 2018. A novel compression-resistant lattice composite material by introducing a novel optimization method and metallization method was proposed [142], which made a great contribution to lightweight in 2019. Based on the bionics principle, Shan et al [131] designed the bionic robot thigh according to the CT scan human-femur surface.…”

Section: Lightweight Manufacturing Technology and 3d Printingmentioning

confidence: 99%

Lightweight Research in Engineering: A Review

Jiao

et al. 2019

Applied Sciences

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In the field of mechanical equipment manufacturing, the focus of research and development is not on weight reduction, but on how to choose between the rigidity and performance of components (such as strength or flexibility). For this contradiction, lightweight is one of the best solutions. The problems associated with lightweight were initially considered and systematically studied in aircraft manufacturing in engineering. Therefore, lightweight has been greatly developed in aviation research and has played an increasingly important role in construction machinery. This paper presents a brief description of the current status of lightweight in machinery by reviewing some significant progress made in the last decades. Potential research topics are also discussed from the four aspects of material, structure, bionics, and manufacturing, and they forecast the development trend of lightweight in the future construction machinery. The entire body of literature about the field is not covered due to the limitation of the length of paper. The scope of this review is limited and closely related to the development of lightweight technology in engineering applications.

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“…In vat polymerization, such structures are often not necessary as support can be provided through flotation by the liquid resin; (3) the properties of the resulting printed structure can easily be modulated by adding reinforcing agents or other ingredients into the resin to produce a composite material [ 40 ]. For example, the material may be made ferromagnetically or electrically conductive by adding magnetic [ 41 , 42 , 43 ] or conductive [ 40 , 44 , 45 , 46 ] particles to the resin; (4) further properties modulation can be achieved by using the printed polymer structure as a template to produce lattice made of metallized polymeric composites [ 47 ], metal or ceramic hollow tubes or solid ceramic lattice [ 48 , 49 , 50 ]. Metallization of the surface of a polymeric lattice increased its stiffness and strength [ 47 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Compressive Behavior of a Micro-Lattice Composite by High Resolution DLP Stereolithography

Shin¹,

Chang²

2021

Polymers

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Lattice structures are superior to stochastic foams in mechanical properties and are finding increasing applications. Their properties can be tailored in a wide range through adjusting the design and dimensions of the unit cell, changing the constituent materials as well as forming into hierarchical structures. In order to achieve more levels of hierarchy, the dimensions of the fundamental lattice have to be small enough. Although lattice size of several microns can be fabricated using the two-photon polymerization technique, sophisticated and costly equipment is required. To balance cost and performance, a low-cost high resolution micro-stereolithographic system has been developed in this work based on a commercial digital light processing (DLP) projector. Unit cell lengths as small as 100 μm have been successfully fabricated. Decreasing the unit cell size from 150 to 100 μm increased the compressive stiffness by 26%. Different pretreatments to facilitate the electroless plating of nickel on the lattice structure have been attempted. A pretreatment of dip coating in a graphene suspension is the most successful and increased the strength and stiffness by 5.3 and 3.6 times, respectively. Even a very light and incomplete nickel plating in the interior has increase the structural stiffness and strength by more than twofold.

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Topology optimization-guided lattice composites and their mechanical characterizations

Cited by 77 publications

References 32 publications

Designing a Sandwich Aircraft Spoiler with Lattice Structure Cores

Designing a Sandwich Aircraft Spoiler with Lattice Structure Cores

Lightweight Research in Engineering: A Review

Fabrication and Compressive Behavior of a Micro-Lattice Composite by High Resolution DLP Stereolithography

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