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Sandwich energy absorption device

An energy-absorbing device and sandwich technology, applied in the field of energy-absorbing, can solve the problems of poor anti-vibration performance of structures, inability to simultaneously satisfy structural strength, stiffness, anti-vibration, anti-impact energy-absorbing performance, and unsatisfactory energy-absorbing effects. Achieve the effects of improved anti-vibration ability, improved impact energy absorption ability, and good anti-vibration performance

Inactive Publication Date: 2015-03-25
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional lattice sandwich panels and foam sandwich panels mainly absorb energy through the plastic deformation of panels and sandwich materials. Sandwich panels have certain strength and stiffness, but the overall energy absorption effect is not ideal
When the sandwich material is solid, the energy absorption effect is obviously improved, but the anti-vibration performance of the structure is poor.
Therefore, the existing sandwich panel structure cannot satisfy the structural strength, stiffness, vibration resistance, shock resistance and energy absorption performance at the same time.

Method used

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Examples

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Embodiment 1

[0023] like figure 1 As shown, the embodiment of the present invention provides a sandwich energy-absorbing device, which includes a packaging panel 1 and a core layer 2 sealed in a closed space inside the packaging panel 1. The core layer 2 is composed of a core material 21 and filled in the core. The brittle material between the material 21 and the closed space inside the packaging panel 1; wherein the packaging panel 1 includes an upper panel 11, a lower panel 12, and a side panel 13, and the core layer 2 is filled in the upper panel 11, the lower panel 12, and the side panels. In the enclosed space formed by the board 13, the core layer 2 includes a brittle blasting layer 23 and a core material 21 embedded in the brittle blasting layer 23; a shear thickening fluid is filled between the core material 21 and the brittle blasting layer 23 Material 22.

[0024] The brittle blasting layer 23 can be made of brittle and fragile materials such as ceramics or glass. The brittle bl...

Embodiment 2

[0030] see figure 2 , the core material 21 is specifically connected by a plurality of first node units 210 to form a network; each first node unit 210 includes more than three (three in this embodiment, see figure 2 ) is a core material rod 21a arranged in a spatial shape, one end of the core material rod 21a is connected to the same node (the first node A), and the other end of the core material rod 21a is connected to the node (the first node A) respectively. On a different node (the second node B) that is adjacent and opposite in direction; on the node above (see figure 2 The first node A) in is connected to the upper panel 11, and the lower node (see figure 2 The second node B) in is connected to the lower panel 12 . During manufacture, the molding unit block is in the shape of a triangular pyramid.

Embodiment 3

[0032] see image 3 The only difference between this embodiment and the second embodiment is that each first node unit 210 includes four core material rods 21a arranged in a spatial shape. During manufacture, the molding unit block is in the shape of a quadrangular pyramid.

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Abstract

The invention provides a sandwich energy absorption device which comprises an upper panel, a lower panel, side plates and a core plate layer, wherein enclosed space defined by the upper panel, the lower panel and the side plates is filled with the core plate layer. The sandwich energy absorption device is characterized in that the core plate layer comprises a brittle blasting layer and core materials inlaid in the brittle blasting layer; and space between the core materials and the brittle blasting layer is filled with a shear thickening fluid. When the energy absorption device is penetrated by a bullet, the panels and the side plates absorb energy firstly, then the bullet penetrates through the brittle blasting layer, the brittle blasting layer is cracked, and bullet energy is further absorbed; and meanwhile, the shear thickening fluid flows rapidly in the brittle blasting layer deformation process, and energy is dissipated through viscosity; and shock resistance and impact resistance of the sandwich energy absorption device are improved.

Description

technical field [0001] The invention relates to energy-absorbing technology, in particular to a sandwich energy-absorbing device. Background technique [0002] Space lattice sandwich energy-absorbing structure is an effective energy-absorbing structure that dissipates impact load energy through large plastic deformation. The sandwich structure is generally a porous metal structure. Compared with traditional single-layer panels, the panel sandwich structure has higher specific strength and specific stiffness, and also has functions such as shock absorption, temperature insulation, and sound absorption. The structural weight is reduced and the cost is reduced while meeting the mechanical performance requirements. The panel sandwich structure is usually used for the optimal design of lightweight structures, and has a large number of applications in engineering. [0003] Traditional lattice sandwich panels generally absorb energy through large plastic deformation of structura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/28B32B18/00B32B1/06B32B33/00
CPCB32B3/28B32B18/00B32B33/00B32B1/00
Inventor 吴先前黄晨光
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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