Vibration characteristics of additive manufactured IWP-type TPMS lattice structures

Zhang, Cong; Qiao, Hui; Yang, Lei; Ouyang, Wu; He, Tao; Liu, Bing; Chen, Xiyong; Wang, Nannan; Yan, Chunze

doi:10.1016/j.compstruct.2023.117642

Cited by 19 publications

(5 citation statements)

References 39 publications

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“…Table 8 summarizes grain size information for TC11, Ti‐6Al‐4V, and Ti. [ 12–14,31 ] It is noted that: a) PBF‐LB enables rapid solidification, whose cooling rate is proposed as up to 10 6 K s −1 . [ 10–12 ] Such high cooling rate, often results in smaller grain size and non‐equilibrium microstructure.…”

Section: Discussionmentioning

confidence: 99%

“…[ 7,8 ] As for many other Ti materials, additive manufacturing (AM) and 3D printing methods offer manufacturing superiority to the TC11 alloy, and these include directed energy deposition (DED) and powder bed fusion‐laser beam (PBF‐LB). [ 9–14 ] The latter is also known as selective laser melting (SLM), which often provides the best surface finish and geometry accuracy, as well as superb mechanical properties due to fine grain size associated with the rapid cooling that is resulted from laser remelting and non‐equilibrium solidification. [ 9–14 ]…”

Section: Introductionmentioning

confidence: 99%

“…[ 9–14 ] The latter is also known as selective laser melting (SLM), which often provides the best surface finish and geometry accuracy, as well as superb mechanical properties due to fine grain size associated with the rapid cooling that is resulted from laser remelting and non‐equilibrium solidification. [ 9–14 ]…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nanocrystalline Ti‐Al‐Mo‐Zr‐Si Alloy (TC11) by Laser Powder Bed Fusion In‐situ Alloying

Ouyang,

Dong,

Wang

et al. 2024

Adv Eng Mater

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TC11 alloy is an important high temperate Ti alloy. Its laser in‐situ alloying by powder bed fusion‐laser beam (PBF‐LB) has been explored in this study. Results show that it is feasible to print the TC11 alloy using elemental powders rather than pre‐alloyed powder, in terms of high density and good combination of strength and ductility at both room and elevated temperatures, along with minor loss of composing elements. Interestingly, it is noticed that an unusual nanocrystalline microstructure has formed due to the use of ZrH2 powder feedstock, partially explaining the reason for the good mechanical properties achieved. Finite element analysis has been employed to understand the in‐situ alloying. Furthermore, a post processing by micro arc oxidation (MAO) has been employed to the alloy, aiming to enhance its high‐temperature oxidation resistance. The results make an implication that hydrides such as ZrH2 may hold the promise to develop nanosized, advanced Ti materials through laser in‐situ alloying, and MAO can be considered for PBF‐LB prepared TC11 alloy.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanocrystalline Ti‐Al‐Mo‐Zr‐Si Alloy (TC11) by Laser Powder Bed Fusion In‐situ Alloying

Ouyang,

Dong,

Wang

et al. 2024

Adv Eng Mater

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“…Flexible TPMS structures efficiently absorb energy from stress or impact, reducing bounce and vibration [45,46]. This is key for joint and muscle health, intense workouts, and medical treatments [47].…”

Section: Discussionmentioning

confidence: 99%

“…In summary, improving the elasticity, energy absorption, and dissipation of flexible TPMS structures benefits the sports and medical fields [47]. Their customizable nature suits various applications, ensuring better performance, comfort, and safety [47].…”

Section: Discussionmentioning

confidence: 99%

The Laser Selective Sintering Controlled Forming of Flexible TPMS Structures

Xue,

Li,

Chen

et al. 2023

Materials

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Sports equipment crafted from flexible mechanical metamaterials offers advantages due to its lightweight, comfort, and energy absorption, enhancing athletes’ well-being and optimizing their competitive performance. The utilization of metamaterials in sports gear like insoles, protective equipment, and helmets has garnered increasing attention. In comparison to traditional truss and honeycomb metamaterials, the triply periodic minimal surface lattice structure stands out due to its parametric design capabilities, enabling controllable performance. Furthermore, the use of flexible materials empowers this structure to endure significant deformation while boasting a higher energy absorption capacity. Consequently, this study first introduces a parametric method based on the modeling equation of the triply periodic minimal surface structure and homogenization theory simulation. Experimental results demonstrate the efficacy of this method in designing triply periodic minimal surface lattice structures with a controllable and adjustable elastic modulus. Subsequently, the uniform flexible triply periodic minimal surface lattice structure is fabricated using laser selective sintering thermoplastic polyurethane technology. Compression tests and finite element simulations analyze the hyperelastic response characteristics, including the element type, deformation behavior, elastic modulus, and energy absorption performance, elucidating the stress–strain curve of the flexible lattice structure. Upon analyzing the compressive mechanical properties of the uniform flexible triply periodic minimal surface structure, it is evident that the structure’s geometric shape and volume fraction predominantly influence its mechanical properties. Consequently, we delve into the advantages of gradient and hybrid lattice structure designs concerning their elasticity, energy absorption, and shock absorption.

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Effect of Cell Size on the Mechanical Properties of the Porous Structure of a CuCrZr Alloy Formed by Selective Laser Melting Technology

Gao,

Liu,

Hao

et al. 2024

Adv Eng Mater

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The porous structure has been widely used in heat sinks in aerospace fields because of its good specific strengthand lightweight. The porous structure formed by selective laser melting technology offers many advantages, but it also presents some challenges, for instance, how to how to ensure that the density is greatly reduced without sacrificing the material's mechanical properties. The Schoen I‐graph‐wrapped package structure with different cell sizes under the same volume fraction had been designed and fabricated by selective laser melting technology using CuCrZr powder as the raw material. The microstructure, grain orientation, and static properties were explored. At the same volume fraction, the pores were almost completely blocked when the cell size was 2 mm, with reduced powder adhesion when the cell size was 9 mm. As the cell size decreases, the compressive strength increases, with the compressive strength reaching 180 MPa at a cell size of 2 mm. Moreover, the energy absorption efficiency increases with the increase in cell size, with the highest energy absorption efficiency of 28% at a cell size of 9 mm. The limit dimensions under these conditions were determined to provide a reference for related research in this field.

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Vibration characteristics of additive manufactured IWP-type TPMS lattice structures

Cited by 19 publications

References 39 publications

Nanocrystalline Ti‐Al‐Mo‐Zr‐Si Alloy (TC11) by Laser Powder Bed Fusion In‐situ Alloying

Nanocrystalline Ti‐Al‐Mo‐Zr‐Si Alloy (TC11) by Laser Powder Bed Fusion In‐situ Alloying

The Laser Selective Sintering Controlled Forming of Flexible TPMS Structures

Effect of Cell Size on the Mechanical Properties of the Porous Structure of a CuCrZr Alloy Formed by Selective Laser Melting Technology

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