Gradient pressure-torsion energy storage and vibration reduction structure

Abstract

The invention discloses a gradient pressure-torsion energy storage and vibration reduction structure. The structure is characterized in that a plurality of pressure-torsion unit cells can rotate the load direction when being subjected to load, the pressure-torsion unit cells are arranged to form a layer of energy storage and vibration reduction unit in an array, and a plurality of layers of energy storage and vibration reduction units are sequentially overlapped to form the gradient pressure-torsion energy storage and vibration reduction structure; each pressure-torsion unit cell sequentially comprises an upper face plate, a plurality of pressure-torsion structures, a lower face plate and a bottom plate from top to bottom, and the pressure-torsion structures are arranged between the upper face plates and the lower face plates in an overlapped mode. Impact energy is converted into structure rotation energy and counterweight rotation energy, the energy absorption efficiency of a traditional structure is greatly improved, meanwhile, the structure can further absorb the rotation energy through a transmission means in the rotation process, the structure is high in designability, and the rigidity and the strength of the structure can be improved by increasing the number of inclined rods of the unit cells, so that the structure has a wider application space.

Description

technical field [0001] The invention belongs to the technical field of mechanical metamaterials, and in particular relates to a gradient pressure-torsion energy storage vibration damping structure. Background technique [0002] Since the early 21st century, metamaterials have gradually developed into an important branch of emerging material technologies. Metamaterials are a kind of materials that control various properties of materials to obtain expected functions by designing the internal microstructure of materials. At present, metamaterials have shown outstanding advantages in acoustics, optics, heat conduction, and energy absorption. They play a vital role in aerospace, biomedical, energy power, and transportation. effect. [0003] The design of metamaterials can be summarized as "unit cell design + unit cell combination", in which a unit cell can be understood as the smallest unit in the microstructure of the metamaterial, while the overall metamaterial is formed by t...

AI Technical Summary

Problems solved by technology

[0004] At present, metamaterials have many applications in vibration reduction, and have shown good performance, which solves the defect that the size of traditional shock absorbers cannot be designed in a complex manner, and provides a solution with a lower density.

However, at present, most vibration-damping metamaterials focus on the design of metamaterials using viscoelastic materials, so that the energy in the vibration process is converted into internal energy through viscoelastic dissipation, and the vibration-damping ability and efficiency need to be improved.

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