Enhanced superimposed hollow lattice structure and application thereof

Abstract

The invention belongs to the field of lattice structures, and specifically discloses an enhanced superimposed hollow lattice structure and an application thereof. The enhanced superimposed hollow lattice structure comprises a plurality of enhanced hollow lattice unit cells arranged periodically and repeatedly in three dimensions, the enhanced hollow lattice unit cells comprise peripheral base hollow unit cells and inner core support hollow unit cells, the centers of gravity of the peripheral base hollow unit cells are coincided with that of the inner core support hollow unit cells, and the connecting rods and connecting points of the inner core support hollow unit cells are coincided with the central points of the connecting rods of the peripheral base hollow unit cells. According to the invention, partial solid is removed from the middle of the connecting rod body of the solid unit cell structure to form a hollow lattice unit cell and achieve light weight; the produced enhanced superimposed hollow unit cell is composed of two hollow unit cells, the volume of the superimposed lattice structure is lower than the sum of the volumes of the two base lattice structures under separate implementation, but the strength is higher than the sum of the strength of the two base lattice structures working separately, and the maximum bearing displacement is higher than the maximum bearing displacement characteristic under the sole action of the basic structure.

Description

technical field [0001] The invention belongs to the field of lattice structures, and more specifically relates to an enhanced stacked hollow lattice structure and its application. Background technique [0002] At present, with the advancement of science and technology, the aerospace field is no longer limited to basic flight. Energy saving and emission reduction in flight has become a mainstream topic. For example, the use of light alloy lattice structures with high specific strength for wings and landing gear can achieve shock absorption. , sound absorption, light weight, and then realize energy saving and emission reduction, so the aviation field urgently needs to solve the problems of light weight of the fuselage and high specific strength of the structure. [0003] At present, scientific research workers generally start from the aspects of material selection and structural design, and the innovation of materials has great limitations due to the long research and developm...

AI Technical Summary

Problems solved by technology

However, in the past, the structural design was mostly three-dimensional combination of independent connecting rods to form a single lattice structure. For example, patent CN2017102312783 discloses a lattice structure with functional gradients, but it is difficult to compare the designed structural performance with itself to determine whether the structural performance is Ascension conclusion

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