Conformal Lattice Structures: Modeling and Optimization

Fabbro, Pierandrea Dal; Rosso, Stefano; Ceruti, Alessandro; Meneghello, Roberto; Concheri, Gianmaria; Savio, Gianpaolo

doi:10.1007/978-3-030-91234-5_48

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…In the case of the gradient by thickness, the structure maintains a constant cell size, but its thickness is changed (Figure 7b). Conformal lattice structures consist of cells changing in length and shapes non-homogeneously, so that the replication pattern may follow the boundaries of the part (Figure 7c) [47,48]. In stochastic patterns, the cell size varies randomly, while the thickness remains the same.…”

Section: Characteristics Of the Cell Replication Patternmentioning

confidence: 99%

Bird’s Eye View on Lattice Structures: Design Issues and Applications for Best Practices in Mechanical Design

Ahmad,

Belluomo,

Bici

et al. 2023

Metals

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Lattice structures for engineering applications are patterns of unit cells designed to make a larger functional structure. Research on lattice structures ranges in many fields, from mechanical characterization and cell and pattern designs in respect of their applications, to the manufacturing process and its final shape control. From the manufacturing point of view, some kinds of lattice structures can be infeasible when approached with traditional manufacturing methods. It may offer an inevitable limitation of their adoption. However, advancements in Additive Manufacturing (AM) have solved this manufacturing issue to a great extent, allowing to obtain major complexity of the cells that can be achieved. The topology, shape of the unit cell, and the characteristics of its replication pattern allow us to obtain many kinds of structures in respect of the different engineering requirements and manufacturing constraints. Nevertheless, the necessity of new or dedicated CAD-CAE approaches arises to manage the domains of multiscale modeling. These are some of the advantages and disadvantages that may arise while approaching the design of a component using lattice structures. The aim of this paper is to provide an overview that integrates the most recent applications of lattice structures with their related design and manufacturing issues so that, from a practical design point of view, any state-of-the-art improvements may be established in respect of the related field of applications. In this article, engineers and researchers may find a practical summary of the capabilities and processes of lattice structures that are currently available from a design and development point of view.

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Section: Characteristics Of the Cell Replication Patternmentioning

confidence: 99%

Bird’s Eye View on Lattice Structures: Design Issues and Applications for Best Practices in Mechanical Design

Ahmad,

Belluomo,

Bici

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

Design of conformal lattice metamaterials for additive manufacturing

Zhong,

Mo,

Liang

et al. 2024

Current Opinion in Solid State and Materials Science

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Analysis of a Preliminary Design Approach for Conformal Lattice Structures

et al. 2021

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An important issue when designing conformal lattice structures is the geometric modeling and prediction of mechanical properties. This paper presents suitable methods for obtaining optimized conformal lattice structures and validating them without the need for high computational power and time, enabling the designer to have quick feedback in the first design phases. A wireframe modeling method based on non-uniform rational basis spline (NURBS) free-form deformation (FFD) that allows conforming a regular lattice structure inside a design space is presented. Next, a previously proposed size optimization method is adopted for optimizing the cross-sections of lattice structures. Finally, two different commercial finite element software are involved for the validation of the results, based on Euler–Bernoulli and Timoshenko beam theories. The findings highlight the adaptability of the NURBS-FFD modeling approach and the reliability of the size optimization method, especially in stretching-dominated cell topologies and load conditions. At the same time, the limitation of the structural beam analysis when dealing with thick beams is noted. Moreover, the behavior of different kinds of lattices was investigated.

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Conformal Lattice Structures: Modeling and Optimization

Cited by 3 publications

References 29 publications

Bird’s Eye View on Lattice Structures: Design Issues and Applications for Best Practices in Mechanical Design

Bird’s Eye View on Lattice Structures: Design Issues and Applications for Best Practices in Mechanical Design

Design of conformal lattice metamaterials for additive manufacturing

Analysis of a Preliminary Design Approach for Conformal Lattice Structures

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