Transition boundaries and stiffness optimal design for multi-TPMS lattices

Ren, Fangxi; Zhang, Changdong; Liao, Wenhe; Liu, Tingting; Li, Dawei; Shi, Xiaohan; Jiang, Weitao; Wang, Cong; Qi, Jian; Chen, Yi; Wang, Zhen

doi:10.1016/j.matdes.2021.110062

Cited by 62 publications

(20 citation statements)

References 45 publications

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“…Ren et al proposed a design methodology for a multi-scale lattice with multiple triply periodic minimal surfaces (TPMSs) by locating different lattice cells based on the stress regions. The stiffness and strength of the resulting hybrid structure were 31% and 21% higher than those of the traditional TPMS lattice, respectively 23 . Song et al proposed a hybrid structure composed of simple cubic and body-centered cubic unit cells produced by utilizing a crystal twinning mechanism.…”

Section: Introductionmentioning

confidence: 91%

Customizing the mechanical properties of additively manufactured metallic meta grain structure with sheet-based gyroid architecture

Kim

et al. 2022

Sci Rep

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The use of cellular structures has led to unprecedented outcomes in various fields involving optical and mechanical cloaking, negative thermal expansion, and a negative Poisson’s ratio. The unique characteristics of periodic cellular structures primarily originate from the interconnectivity, periodicity, and unique design of the unit cells. However, the periodicity often induces unfavorable mechanical behaviors such as a “post-yielding collapse”, and the mechanical performance is often limited by the design of the unit cells. Therefore, we propose a novel structure called a meta grain structure (MGS), which is inspired by a polycrystalline structure, to enhance flexibility in design and mechanical reliability. A total of 138 different MGSs were built and tested numerically, and the correlations between the design parameters (e.g., the relative density) and mechanical properties of the MGSs were rigorously analyzed. A systematic design methodology was developed to obtain the optimal design of the MGS with the target Young’s modulus. This methodology makes it possible to build a unique structure that offers various design options and overcomes the current limitations of cellular structures. Furthermore, a systematic inverse design methodology makes it possible to produce an MGS that satisfies the required mechanical performance.

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Section: Introductionmentioning

confidence: 91%

Customizing the mechanical properties of additively manufactured metallic meta grain structure with sheet-based gyroid architecture

Kim

et al. 2022

Sci Rep

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“…Ren et al [ 137 ] proposed a design procedure to improve the structural stiffness and transition boundaries of functionally graded hybrid TPMS lattice beam composed of IW‐P and primitive structures. Initially, the stiffness of a cantilever beam was optimized using the SIMP method; subsequently, the optimal density distribution map was obtained; then, a mapping between principle stress directions and lattice types was established to evaluate the best performing lattices in terms of bending‐ and stretching‐dominated behavior; accordingly, the design domain (i.e., the lattice‐beam) was founded on that.…”

Section: Optimization Of Lattice Materials Using Automated Design Exp...mentioning

confidence: 99%

Section: Optimization Of Lattice Materials Using Automated Design Exp...mentioning

confidence: 99%

Recent Advancements in Design Optimization of Lattice‐Structured Materials

et al. 2023

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Metamaterials, also known as lattice‐structured materials, imitate the multifunctionality of natural architects as tailoring their physical properties is associated with manipulating their microstructure. As the recent evolution of additive manufacturing enables the creation of intricate geometries with minimal material wastage, improving the design to manufacturing cycle of lattice structured materials has become one of the trending research areas. Triply periodic minimal surface (TPMS) and plate lattice materials are renowned for their exceptional mechanical behavior in lightweight applications. Apparently, several types of design optimization strategies are explored to maximize their performance for better biocompatibility and mechanical loading resistance. Some of these strategies include functional gradation and multimorphology hybridization that are comprehensively described in this review. Their benefits and drawbacks are highlighted with a focus on TPMS and plate lattice materials. The review anticipates the utilization of automated design exploration methods (i.e., topology optimization and data‐driven methods) to further enhance the design optimization procedure of lattice structured materials.

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“…Hybridization can also involve the programmed introduction of defects onto an existing unit cell pattern, equivalent to a Boolean subtraction. An example of combining unit cells to create a hybrid cellular structure, drawn from the literature, is shown in Figure 6 [22], where two different unit cell types from a class of cellular materials called triply periodic minimal surfaces (TPMSs) are combined into one structure.…”

Section: Types Of Aperiodic Cellular Materialsmentioning

confidence: 99%

A Classification of Aperiodic Architected Cellular Materials

Ramirez-Chavez

Anderson

Sharma

et al. 2022

Designs

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Architected cellular materials encompass a wide range of design and performance possibilities. While there has been significant interest in periodic cellular materials, recent emphasis has included consideration of aperiodicity, most commonly in studies of stochastic and graded cellular materials. This study proposes a classification scheme for aperiodic cellular materials, by first dividing the design domain into three main types: gradation, perturbation, and hybridization. For each of these types, two design decisions are identified: (i) the feature that is to be modified and (ii) the method of its modification. Considerations such as combining different types of aperiodic design methods, and modulating the degree of aperiodicity are also discussed, along with a review of the literature that places each aperiodic design within the classification developed here, as well as summarizing the performance benefits attributed to aperiodic cellular materials over their periodic counterparts.

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Transition boundaries and stiffness optimal design for multi-TPMS lattices

Cited by 62 publications

References 45 publications

Customizing the mechanical properties of additively manufactured metallic meta grain structure with sheet-based gyroid architecture

Customizing the mechanical properties of additively manufactured metallic meta grain structure with sheet-based gyroid architecture

Recent Advancements in Design Optimization of Lattice‐Structured Materials

A Classification of Aperiodic Architected Cellular Materials

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