Repeated energy absorption and multiple compressive responses of thermoplastic composite hierarchical cylindrical structures

Liu, Houchang; Chen, Liming; Zhou, Yadong; Pan, Xin; Zhu, Shengnan; Li, Weiguo

doi:10.1016/j.compscitech.2022.109306

Cited by 12 publications

(1 citation statement)

References 45 publications

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“…Not only does it lighten the sports equipment, but it also helps lower the risk of athletes getting injured. The design of porous structures now plays a pivotal role in revolutionizing sports gear [1][2][3]. In comparison to traditional lattice structures like facecentered cubic, body-centered cubic, and honeycomb structures, the triply periodic minimal surface (TPMS) lattice structure has gained prominence.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

confidence: 99%