Assembled periodic octahedral truss lattice structure

Abstract

The invention discloses an assembled periodic octahedral truss lattice structure which is formed by connecting a plurality of octahedral truss lattice unit cells capable of being assembled, and each octahedral truss lattice unit cell capable of being assembled is composed of two I-type connecting blocks and two II-type connecting blocks. The four connecting blocks are mechanically connected through the bolt sets to form an octahedron, the six matching hole sets of the octahedron structure are internally connected and fixed through the short bolt sets to form octahedron truss lattice unit cells, and the different octahedron truss lattice unit cells are connected through the long bolt sets to form the periodic octahedron truss lattice structure. The lattice unit cell is decomposed into four parts, the octahedral truss lattice unit cell and the periodic octahedral truss lattice structure are assembled in a mechanical connection mode, limitation of machining equipment and technology can be avoided, and preparation of the periodic octahedral truss lattice structure controllable in size and rich in configuration is achieved on the premise of low cost.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing, and more specifically relates to the design of an assembled periodic octahedral truss lattice structure. Background technique [0002] The design scheme of porous truss lattice structure is currently recognized as one of the most effective engineering weight reduction schemes. It has many functional characteristics such as shape control, shock absorption, heat dissipation, sound absorption, energy absorption and heat transfer. Among them, the octahedral truss lattice structure has excellent mechanical properties such as low relative density, high specific stiffness, high strength, excellent mechanical properties and heat transfer performance. Great application value. [0003] The octahedral lattice structure is a stretch-dominant structure, which can be used as a reliable substitute for bending-dominant structures such as metal foam materials and honeycomb structures, and has higher structu...

AI Technical Summary

Problems solved by technology

Although the above-mentioned manufacturing processes can prepare periodic truss lattice structures with various configurations and different materials, these methods consume a long time in the processing process and cumbersome post-processing, resulting in high energy consumption and low material utilization. pores and other obvious defects, thereby reducing the intrinsic mechanical properties of the matrix material; in order to solve the limitations of the above-mentioned traditional preparation methods, the present invention provides an assembled periodic octahedral lattice truss structure, by designing the configuration of the unit cell Elements and improved geometric dimensions, and then realize the regulation of its functions and characteristics. It has the characteristics of strong designability and stable structural performance.

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