Research on Pressurized Structure Based on Lattice Truss Sandwich

Advances in Astronautics Science and Technology Pub Date : 2022-07-24 DOI:10.1007/s42423-022-00129-1

Shi Liming, Li Linling, Wang Heyuan, Xian Yuhua, Zhang Xiaoyu

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引用次数: 0

Abstract

Due to the high specific strength and specific stiffness of the lattice structure, it has been widely used in aerospace and other fields. Aiming at the lightweight requirements of spacecraft, a research on the lightweight design of the pressurized structure is carried out based on lattice truss sandwich. An axisymmetric cell structure and arrangement method is proposed, which can improve the structural bearing efficiency under internal pressure load, reduce the structure weight and ensure the consistency of deformation. At the same time, the influence of the parameters of the lattice sandwich structure on the performance of the structure is analyzed by numerical simulation. The size effect of the pressured structure is analyzed, and the equivalent methods for different structures are evaluated. The calculation results of the equivalent model are verified, and the results are proved to be credible, which can greatly reduce the computational cost and time to meet the requirements of engineering applications.

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基于格构特拉斯夹层的受压结构研究

由于格构结构具有较高的比强度和比刚度，在航空航天等领域得到了广泛的应用。针对航天器的轻量化要求，对基于特拉斯夹层结构的受压结构进行了轻量化设计研究。提出了一种轴对称单元结构和布置方法，可以提高结构在内压载荷下的承载效率，减轻结构重量，保证变形的一致性。同时，通过数值模拟分析了格构夹层结构参数对结构性能的影响。分析了受压结构的尺寸效应，并对不同结构的等效方法进行了评价。对等效模型的计算结果进行了验证，证明了计算结果的可靠性，可以大大降低计算成本和时间，满足工程应用的要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Astronautics Science and Technology

CiteScore

1.20

自引率

0.00%

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