Soft-landing buffer systems with spherical curvature outer shells are widely used in the aerospace field, which not only requires its efficient and smooth buffer performance, but also that the shell of the landing buffer system is compact and lightweight. This paper presents a novel design method for the spherical honeycomb core structure for a soft-landing device buffer shell. The proposed method aims to realize the positive sphere characteristics of the honeycomb core by adopting the spherical mosaic of a truncated icosahedron and the triangle formation principle. Furthermore, according to the relationship of the deformation and the energy absorption performance, the optimum structural parameters are obtained by discussing the mechanical properties of the inner core, which determine the unit size and density of the whole model. At the same time, we estimate the distortion rate caused by projection that can be considered as an evaluation criterion to describe the performance of the proposed structure of the spherical honeycomb core. Simulation tests are carried out employing Abaqus/explicit to analyze the distortion impact and the energy-absorbtion properties of the proposed structures under different actual environments.

中文翻译：

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软着陆装置缓冲壳球形蜂窝芯力学设计及吸能分析

球面曲率外壳软着陆缓冲系统广泛应用于航空航天领域，不仅要求其高效、平稳的缓冲性能，而且要求着陆缓冲系统的外壳结构紧凑、轻便。本文提出了一种用于软着陆装置缓冲壳的球形蜂窝芯结构的新设计方法。所提出的方法旨在通过采用截头二十面体的球形镶嵌和三角形形成原理来实现蜂窝芯的正球面特性。进而根据变形与吸能性能的关系，讨论内核的力学性能，得到最优结构参数，决定了整个模型的单位尺寸和密度。同时，我们估计由投影引起的失真率，可以将其视为评估标准来描述所提出的球形蜂窝芯结构的性能。采用Abaqus/explicit进行仿真试验，分析不同实际环境下所提出结构的变形影响和吸能特性。