Optimal Design and Experimental Verification of an Enclosed Skin Lattice Support Structure

doi:10.3901/JME.2021.22.035

Abstract

Abstract: With the continuous expansion of human space activities, complex missions have put forward higher requirements for structural lightweight technology. On the basis of traditional structure, the approach including the application of high-performance materials can hardly meet the requirement of lightweight structures. A new type of load support structure with an enclosed skin-wrapped three-dimensional lattice hierarchical structure is propsed, a topological optimization design model of the structure is established, and a design on the optimized structure is performed. The physical structure is prepared by the additive manufacturing method of selective laser melting (SLM), and the dynamic test verification is carried out. The results show that the optimal load support structure is 46.4% lighter than the traditional one. And it has already applied to a certain satellite load support mission. The proposed enclosed skin wrapped three-dimensional lattice structure can effectively improve the design efficiency of stent-like structures, and has the prospect of popularization and application in the lightweight of spacecraft structures.

Key words: selective laser melting(SLM), optimal design, 3-dimensional lattice, load support structure, stiffness

CLC Number:

TG156

ZHANG Long, LI Ang, ZHAO Yunpeng, CAO Zhe, CENG Huizhong, ZHOU Hao, CHEN Geng, ZHANG Xiaoyu. Optimal Design and Experimental Verification of an Enclosed Skin Lattice Support Structure[J]. Journal of Mechanical Engineering, 2021, 57(22): 35-42.

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