Load-Adapted Design of Generative Manufactured Lattice Structures

Reinhart, Günther; Teufelhart, Stefan

doi:10.1016/j.phpro.2011.03.049

Cited by 40 publications

(24 citation statements)

References 3 publications

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“…To evaluate the results and demonstrate the capabilities of these lattice structures, the assessed value of stiffness-to-mass ratio RV is applied from [7]. In this paper, it is used to investigate the differences among these three unit cells filled structures by involving the critical results, the dependent relation between the force, the displacement and the responding weight.…”

Section: Comparison With the Same Rdmentioning

confidence: 99%

“…Lightweight design is one area that AM achieves well where it is impractical for other conventional fabrication technologies [1][2][3]. Currently there are two main methods of lightweight design, including cellular structure with unit cell [4][5][6] and topology optimization with advanced algorithm [2,3,7]. Topology optimization has only been used for maximum stiffness design to date but lacks sufficient capabilities for hierarchical design integrations at multiple scales [1].…”

Section: Introductionmentioning

confidence: 99%

“…Lattice structure explores to achieve the balance between design convenience/efficiency and design accuracy by representative geometries to efficiently perform design tasks. Some researchers even tried to integrate lattice microstructures with its structural optimization to maximize the stiffness-to-mass ratio [2,7,8].…”

Section: Introductionmentioning

confidence: 99%

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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: Comparison With the Same Rdmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…To refine this classification, we conducted a study on 27 peerreviewed publications related to DFAM for decision making [8,9,13,[25][26][27][28][29][30][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56]. Three different ways to assist designers were identified.…”

Section: Fundamentals Of Dfammentioning

confidence: 99%

“…Their goal is to propose new shapes or new concepts with a creative approach based on the following premise [8,40]: in AM, there is no limit on feasible shapes and on materials distribution. We classify in this category methods based on optimization techniques (parametric and topological) [25,26], those using elementary shapes like lattices structures [41], cellular structures [39], or bionic structures [28] and those defining design features produced by specific AM technologies [30].…”

Section: Fundamentals Of Dfammentioning

confidence: 99%

Assembly Based Methods to Support Product Innovation in Design for Additive Manufacturing: An Exploratory Case Study

Laverne

Segonds

Anwer

et al. 2015

Journal of Mechanical Design

166

138

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Additive manufacturing (AM) is emerging as an important manufacturing process and a key technology for enabling innovative product development. Design for additive manu-facturing (DFAM) is nowadays a major challenge to exploit properly the potential of AM in product innovation and product manufacturing. However, in recent years, several DFAM methods have been developed with various design purposes. In this paper, we first present a state-of-the-art overview of the existing DFAM methods, then we introduce a classification of DFAM methods based on intermediate representations (IRs) and prod-uct's systemic level, and we make a comparison focused on the prospects for product innovation. Furthermore, we present an assembly based DFAM method using AM knowl-edge during the idea generation process in order to develop innovative architectures. A case study demonstrates the relevance of such approach. The main contribution of this paper is an early DFAM method consisting of four stages as follows: choice and develop-ment of (1) concepts, (2) working principles, (3) working structures, and (4) synthesis and conversion of the data in design features. This method will help designers to improve their design features, by taking into account the constraints of AM in the early stages.

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Design for AM

Stavropoulos

2023

SpringerBriefs in Applied Sciences and Technology

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Load-Adapted Design of Generative Manufactured Lattice Structures

Cited by 40 publications

References 3 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

Assembly Based Methods to Support Product Innovation in Design for Additive Manufacturing: An Exploratory Case Study

Design for AM

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