Influence of Kagome lattice structure parameters on its compression characteristics and lightweight design

doi:10.19936/j.cnki.2096-8000.20240328.005

Abstract

Abstract: In order to study the compressive properties of the three-rod support (Kagome) structure and carry out lightweight design, the Kagome multilayer dot matrix structure with 12 different relative cell densities was modeled by changing the structural parameters of the cell elements, and the quasi-static compressive mechanical properties were analyzed using compression experiments and simulations. It is concluded that at a certain cell height, the increase of the inclination angle and cross-sectional diameter of the support rod will improve the anti-compression performance of the Kagome multilayer lattice structure, and the influence of the inclination angle on the overall maximum equivalent flat compressive strength of the structure is greater than that of the rod diameter. The relative density of Kagome increased from 16.6% to 60.7%, the overall equivalent flat compressive modulus increased by 5.54 times, and the maximum equivalent flat compressive strength increased by 4.52 times, and the simulated and experimental results were consistent. In addition, the lightweight design of the Kagome reinforced point structure showed that the overall weight reduced by 16.3%. The compression simulation results showed the lightweight design slightly improved the overall equivalent flat compressive modulus, maximum equivalent flat compressive strength, relative specific strength, specific stiffness and other parameters of the point structure before the compression collapse failure.

Key words: lattice structure, Kagome structure, quasi-static compression, compressive mechanical properties, lightweight design, composites

CLC Number:

TB332

ZHANG Bin, ZHAO Jing, WANG Shijie. Influence of Kagome lattice structure parameters on its compression characteristics and lightweight design[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(3): 35-42.

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