Design and fabrication of periodic lattice-based cellular structures

Gorguluarslan, Recep M.; Gandhi, Umesh; Mandapati, Raghuram; Choi, Seung-Kyum

doi:10.1080/16864360.2015.1059194

Cited by 74 publications

(36 citation statements)

References 9 publications

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“…Fortunately, FEA has been successfully used for the prediction of mechanical properties of AM polymeric and composite scaffolds [28,29]. However, some unit cells are so complex that besides taking up too much design space, their FEA models are also difficult to build and modify.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on load-bearing capabilities of beam-like lattice structures with three different unit cells

Niu

Choo

Sun

et al. 2017

Int J Mech Mater Des

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The design and analysis of lattice structures manufactured using Additive Manufacturing (AM) technique is a new approach to create lightweight high-strength components. However, it is difficult for engineers to choose the proper unit cell for a certain function structure and loading case. In this paper, three beam-like lattice structures with triangular prism, square prism and hexagonal prism were designed, manufactured by SLM process using AlSi10Mg and tested. The mechanical performances of lattice structures with equal relative density, equal base area and height, and equal length for all unit cells were conducted by Finite Element Analysis (FEA). It was found that effective Young's modulus is proportional to relative density, but with different affecting levels. When the lattice structures are designed with the same relative density or the same side lengths, the effective Young's modulus of lattice structure with triangular prism exhibits the maximum value for both cases. When the lattice structures are designed with the same base areas for all unit cells, the effective Young's modulus of lattice structures with square prism presents the maximum. FEA results also show that the maximum stress of lattice structures with triangular prisms in each comparison is at the lowest level and the stiffness-to-mass ratio remains at the maximum value, showing the overwhelming advantages in terms of mechanical strength. The excellent agreements between numerical results and experimental tests reveal the validity of FEA methods applied. The results in this work provide an explicit guideline to fabricate beam-like lattice structures with the best tensile and bending capabilities.

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Section: Introductionmentioning

confidence: 99%

Numerical study on load-bearing capabilities of beam-like lattice structures with three different unit cells

Niu

Choo

Sun

et al. 2017

Int J Mech Mater Des

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“…The configuration of each unit cell structure will be created and stored in a library. The configuration of unit cells is mentioned in (Karamooz Ravari et al, 2014;Gorguluarslan et al, 2016). The model of unit cell structure is created in any CAD environment where a product designer needs to design the model of a product.…”

Section: Creation Of Unit Cell Librarymentioning

confidence: 99%

Design of lattice structure for additive manufacturing in CAD environment

Nguyen

2019

JAMDSM

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Additive manufacturing is an advanced manufacturing technology that allows building any complex 3D geometry of product by adding layer by layer of material. One of the most important effectiveness of additive manufacturing is able to manufacture lattice structure inside product space in order to reduce the usage of material and the weight of the product but still ensure its mechanical properties. The lattice structure is a network of bars linked each other in a space of product and it can be quickly manufactured due to the development of additive manufacturing technologies. However, the design of a model of the lattice structure in the computeraided design environment has many difficulties. The current modeling technologies do not support product designer to automatically create a model of the lattice structure with the different type of configurations. Therefore, the paper will present new approaches to automatically generate a 3D model of the lattice structure in the design space of the product. These approaches allow creating different configurations of the periodic or non-periodic lattice structure.

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“…For example, the aerospace industry employs this technology because of the capabilities to manufacture light weight parts with lattice structures [1]. Lattice structures defined as a continuously repeating unit cell that connects to each other in three dimensions which typically created using a truss design [2][3]. Truss design is a structure that contains a core that is fully opened in all directions and it was classified into three groups; pyramidal structures, tetrahedral structures and collinear structures [4] as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Truss Collinear Lattice Fabricated using Fused Deposition Modeling Technique

Mazlan,

Abdul Kadir*,

Ngadiman

et al. 2019

IJITEE

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manufacturing (AM) enables the production of lattice structure architecture due to its capability to produce complex geometries. Lattice structure is a design that contains a space-filling unit cell that can be tessellated among any axis. It is an analytic design to reduce mass and weight of the object. However, many challenges arise in the AM- printed lattice such as warping, shrinkage, elephant foot, first layer problem, surface finishing and mechanical properties especially when fabricated using fused deposition modeling (FDM) technique. Hence, this study aims to optimize the influence of process parameters of collinear lattice FDM printed part using Taguchi. Meanwhile, S/N ratio was used to find the optimal process parameters in improving the printing quality. Other than that, the analysis of variance (ANOVA) was used to provide the significance ranking of various factors analyzed. From the results, it was found that the layer thickness is the most significant factors that affect the maximum force (N) of collinear lattice structures. In addition, this study was conducted to assist the fabrication of printed part for the structural applications.

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Design and fabrication of periodic lattice-based cellular structures

Cited by 74 publications

References 9 publications

Numerical study on load-bearing capabilities of beam-like lattice structures with three different unit cells

Numerical study on load-bearing capabilities of beam-like lattice structures with three different unit cells

Design of lattice structure for additive manufacturing in CAD environment

Optimization of Truss Collinear Lattice Fabricated using Fused Deposition Modeling Technique

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