Additive manufacturing of metallic cellular materials via three-dimensional printing

Williams, Christopher B.; Cochran, Jack; Rosen, David W.

doi:10.1007/s00170-010-2812-2

Cited by 127 publications

(74 citation statements)

References 21 publications

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“…Moreover, not all unit cells are designed for mechanical supporting structures, could be fabricated by AM process [12], or are suitable for beam-like structures. Even for supporting function unit cells, some of them also originated from triangular prism [30][31][32], cubic prism [20,[33][34][35] and hexagonal prism [19,25] that are widely used in mechanical engineering.…”

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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“…3D printing technology can be divided into three type [5][6][7] : Electron Beam Melting(EBM),Selective Laser Melting (SLM), Selective Laser Sintering (SLS), Laser Direct Melting Deposition (LDMD).…”

Section: The Classification Of 3d Printing Technology For Metal Matermentioning

confidence: 99%

Status of 3D Printing Technology for Metal Materials

Lv¹,

Jia²,

Yang³

et al. 2017

Proceedings of the 2017 7th International Conference on Manufacturing Science and Engineering (ICMSE 2017)

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Abstract.In this paper, the basic principles of 3D printing technology was briefly introduced and several methods of 3D printing for metal materials were introduced in details, including Electron Beam Melting (EBM), Selective Laser Melting forming (SLM), Selective Laser Sintering forming (SLS), Laser Direct Melting Deposition (LDMD). Then, the application field of 3D printing for metal materials and its development were briefly introduced. At the end of this paper, combined with the status of 3D printing for metal materials, it was pointed out that 3D printing for metal materials should focus on printing powder, 3D printing equipment for metal materials, 3D printing parts nondestructive testing methods, 3D printing parts failure behavior and life prediction , and the establishment of non-destructive testing for 3D printing parts of the standard and the database of 3D printing materials comprehensive mechanical properties.

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“…Based on the concept of the AM, several novel fabrication methods as well as some interesting tools were developed, such as the 3D printer and 3Doodler (the world's first 3D printing pen) [6]. Moreover, directly manufacturing with metals, treated as the final frontier in AM techniques, has achieved remarkable advancement in recent years [7][8][9][10][11][12]. Compared with conventional metal component manufacturing process that usually lasts from weeks to months and lacks dynamics in product design, AM techniques allow the lean manufacturing of the machine parts [5,13,14], indicating a new revolution in the manufacturing industry.…”

Section: Introductionmentioning

confidence: 99%