A metallic glass metamaterial with a wrinkled structure

A technology of metallic glass and metamaterials, applied in the direction of nanotechnology, can solve the problems of inability to apply structural parts, etc., and achieve the effects of inhibiting shear band propagation, superior energy absorption characteristics, and vibration weakening

Active Publication Date: 2021-01-19
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size effect can achieve large deformation and high strength, but it is only limited to nanoscale and cannot be applied to large-scale structural parts

Method used

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  • A metallic glass metamaterial with a wrinkled structure
  • A metallic glass metamaterial with a wrinkled structure

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing.

[0019] see figure 1 , the present invention includes a number of folded structures with the same size, consistent shape and periodic arrangement; Arc shape; the first ligament 1 and the second ligament 2 both include inner and outer surfaces, the shape of the inner surface and the outer surface is the same center, different radii, and the center angle is θ 0 The arc of the circle has radius a on the inside surface and radius b on the outside surface. The material of the corrugated structure is metallic glass.

[0020] The invention combines the excellent mechanical properties of the metallic glass with the characteristics of the wrinkled structure itself, introduces the stress gradient from compression to tension through the structural design, and inhibits the propagation of the shear band, thereby greatly improving the room temperature plasticity of the metallic glass an...

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Abstract

The invention discloses a metallic glass metamaterial with a corrugated structure. The toughening effect of the metallic glass metamaterial with the corrugated structure is obvious, and the metallic glass metamaterial with the corrugated structure can be suitable for any metallic glass system and can be prepared into a large-size structural member. According to the metallic glass metamaterial, theaims of absorbing energy, storing energy, reducing vibration and the like can be achieved, for example, the metallic glass metamaterial can be applied to structural members of antiseismic structuresand car vibration dampers. When a car runs on a bumpy road surface, the excellent vibration attenuation capacity of the metallic glass metamaterial is utilized, vibration borne by the car is greatly weakened, and the car runs more stably. When an earthquake happens, the metallic glass metamaterial has a superior energy absorbing characteristic, the energy of earthquake waves can be absorbed to themaximum extent, and damage to buildings in the earthquake is reduced. Although the metallic glass metamaterial is simple in structure, the room temperature plasticity of metallic glass can be greatlyimproved; and meanwhile the toughness is nearly twice as high as what it was, and the high elasticity, high strength, high abrasion resistance and other excellent performance of the metallic glass are kept.

Description

technical field [0001] The invention belongs to the field of metamaterial technology and structural optimization design, and in particular relates to a metallic glass metamaterial with a wrinkled structure. Background technique [0002] Metallic glass, also known as amorphous alloy, is an amorphous solid obtained by rapid cooling of a metal melt in a molten state. Metallic glass has a microstructure with short-range order and long-range disorder, so defects such as dislocations and grain boundaries do not appear. Compared with traditional crystalline metal materials, metallic glass materials exhibit many unique physical, chemical and mechanical properties, such as: high elastic limit, high strength, wear resistance and corrosion resistance, etc. In addition, metallic glass has good thermoforming ability and is easy to process and shape. Although metallic glasses have many excellent properties, due to the lack of plastic deformation mechanisms such as slip planes and disloc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00B82Y40/00
CPCB82Y40/00C22C45/00C22C2200/02
Inventor 沙振东滕云张家宬林伟辉
Owner XI AN JIAOTONG UNIV
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