Lightweight airborne TPMS-filled reflective mirror design for low thermal deformation

Zeng, Chaoqun; Wang, Wei; Hai, Kuo; Ma, Shaoxing

doi:10.1016/j.compstruct.2023.117665

Cited by 7 publications

(1 citation statement)

References 49 publications

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“…These studies mainly highlight how the wall thickness affects properties such as the elastic modulus, energy absorption, fracture stress, and deformation behavior [16][17][18]. However, in applying lattice structures in engineering, the design optimization must align with the functional requirements of the parts [19]. Although there have been proposed optimization methods for gradient and hybrid TPMS lattice structures [20], considering that most lattice structure preparation involves support, further improvement is needed in researching the preparation and performance of these structures [21,22].…”

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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