Application of layout optimization to the design of additively manufactured metallic components

Gilbert, Matthew; Todd, Iain; Derguti, F.

doi:10.1007/s00158-016-1426-1

Cited by 38 publications

(12 citation statements)

References 19 publications

(25 reference statements)

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“…The status, challenges, and future of several related topics are presented and discussed in depth. In summary, we have seen significant research achievements in the past few years and also the numerous successful printings of the topological designs [77,137,145,156,[265][266][267]. However, research in this field is far from mature.…”

Section: Resultsmentioning

confidence: 99%

Current and future trends in topology optimization for additive manufacturing

Liu

Gaynor

Chen

et al. 2018

Struct Multidisc Optim

627

249

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Manufacturing-oriented topology optimization has been extensively studied the past two decades, in particular for the conventional manufacturing methods, e.g., machining and injection molding or casting. Both design and manufacturing engineers have benefited from these efforts because of the close-tooptimal and friendly-to-manufacture design solutions. Recently, additive manufacturing (AM) has received significant attention from both academia and industry. AM is characterized by producing geometrically complex components layer-by-layer, and greatly reduces the geometric complexity restrictions imposed on topology optimization by conventional manufacturing. In other words, AM can make near-full use of the freeform structural evolution of topology optimization. Even so, new rules and restrictions emerge due to the diverse and intricate AM processes, which should be carefully addressed when developing the AM-specific topology optimization algorithms. Therefore, the motivation of this perspective paper is to summarize the state-of-art topology optimization methods for a variety of AM topics. At the same time, this paper also expresses the authors' perspectives on the challenges and opportunities in these topics. The hope is to inspire both researchers and engineers to meet these challenges with innovative solutions.

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Section: Resultsmentioning

confidence: 99%

Current and future trends in topology optimization for additive manufacturing

Liu

Gaynor

Chen

et al. 2018

Struct Multidisc Optim

627

249

View full text Add to dashboard Cite

show abstract

“…Apart from some slight oscillations due to technical details, it is commonly accepted that steelmaking consumes over 560 kg of Coal Equivalent [148] and produces an average of 1.85 carbon dioxide tonnes per tonne of structural steel [147]. Thus, reported weight reductions of 18% to 75% in steel connections [139,[149][150][151], by employing TO, are expected to have a critical impact in steel construction goals.…”

Section: Potential For Topology Optimisation and Additive Manufacturimentioning

confidence: 99%

Topology Optimisation in Structural Steel Design for Additive Manufacturing

2021

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Topology Optimisation is a broad concept deemed to encapsulate different processes for computationally determining structural materials optimal layouts. Among such techniques, Discrete Optimisation has a consistent record in Civil and Structural Engineering. In contrast, the Optimisation of Continua recently emerged as a critical asset for fostering the employment of Additive Manufacturing, as one can observe in several other industrial fields. With the purpose of filling the need for a systematic review both on the Topology Optimisation recent applications in structural steel design and on its emerging advances that can be brought from other industrial fields, this article critically analyses scientific publications from the year 2015 to 2020. Over six hundred documents, including Research, Review and Conference articles, added to Research Projects and Patents, attained from different sources were found significant after eligibility verifications and therefore, herein depicted. The discussion focused on Topology Optimisation recent approaches, methods, and fields of application and deepened the analysis of structural steel design and design for Additive Manufacturing. Significant findings can be found in summarising the state-of-the-art in profuse tables, identifying the recent developments and research trends, as well as discussing the path for disseminating Topology Optimisation in steel construction.

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“…Peregrine works mainly based on the topology optimization algorithm library of Limit State Form. Different from traditional topology optimization algorithms (solid isometric material with penalization (SIMP) method and bidirectional evolutionary structural optimization (BESO)), Limit State Form is based on layout and geometry optimization technology (LAYOPT) [18]. The difference is that topology optimization is an algorithm which takes the structural performance (e.g., strain energy) as the optimization objective and finally presents the optimal distribution of materials within a certain range of structural materials for a given load and support.…”

Section: Pattern Studymentioning

confidence: 99%

Bioinspired building structural conceptual design by graphic static and layout optimization: a case study of human femur structure

Shen

Liu

2021

Journal of Asian Architecture and Building Engineering

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This paper introduces a bioinspired structure design method in the conceptual stage and takes the human femur section as an example, to extract the structural principle from the natural form, and summarizes as the morphological operation rules. The morphological manipulation rules provide a geometric feedback-based design process of both the building structural performance and its space with the manipulation rule of Graphic static. While extracting building structural principle, the Layout Optimization method is applied to obtain the force flow inside the nature biological form boundary under a certain load, and the force flow is presented with strut and tie model, summarizing the structural characteristic of human femur. The combinatorial and transformation methods of graphic statics are employed in the morphological operation stage to transform the form diagram while maintaining equilibrium, which facilitates designers to explore the structural form from both performance and space perspectives. Finally, the design process of a stadium inspired by the human femur is taken as an example to demonstrate how the introduced workflow can be used in the conceptual design stage and optimization of buildings.

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Application of layout optimization to the design of additively manufactured metallic components

Cited by 38 publications

References 19 publications

Current and future trends in topology optimization for additive manufacturing

Current and future trends in topology optimization for additive manufacturing

Topology Optimisation in Structural Steel Design for Additive Manufacturing

Bioinspired building structural conceptual design by graphic static and layout optimization: a case study of human femur structure

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