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High-specific-energy-absorption bionic composite material structure and manufacturing method

A technology of bionic composite materials and manufacturing methods, which can be applied to bumpers, shock absorbers, springs, etc., and can solve the problems of no public disclosure of bionic multicellular energy-absorbing tube structures

Inactive Publication Date: 2020-12-04
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is no published literature on the structure of bionic multicellular energy-absorbing tubes based on carbon fiber resin matrix composites.

Method used

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  • High-specific-energy-absorption bionic composite material structure and manufacturing method
  • High-specific-energy-absorption bionic composite material structure and manufacturing method
  • High-specific-energy-absorption bionic composite material structure and manufacturing method

Examples

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Embodiment 1

[0027] Example 1, such as figure 1 , figure 2 As shown, a biomimetic composite material structure with high specific energy absorption, including regular hexagonal outer tube 1, regular hexagonal inner tube 2, ribs 3 and round tube 4, regular hexagonal outer tube 1 and regular hexagonal inner tube 2 is connected by the rib plate 3, and the apex connection of the regular hexagonal outer tube 1 and the regular hexagonal inner tube 2 adopts the structural form of the round tube 4, forming a dense spider web structure as a whole, which has strong stability and local damage does not render the entire structure ineffective. In this embodiment, a trigger mode of 45° chamfer is used to promote the progressive destruction of the energy-absorbing tube of biomimetic composite material.

[0028] The geometric dimensions of the cross-sectional configuration of the biomimetic composite structure conform to the following formula:

[0029] L 1 = 2L 2 =2L, L>D

[0030] where L 1 is the...

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Abstract

The invention discloses a high-specific-energy-absorption bionic composite material structure a and manufacturing method. The high-specific-energy-absorption bionic composite material structure comprises an orthohexagonal outer pipe, an orthohexagonal inner pipe, a rib plate and a circular pipe; the orthohexagonal outer pipe and the orthohexagonal inner pipe are connected through the rib plate; the vertex connecting position of the orthohexagonal outer pipe and the orthohexagonal inner pipe adopts the structural form of the circular pipe; and the orthohexagonal outer pipe and the orthohexagonal inner pipe form an integrated compact spider web structure. The integrated compact spider web structure has high stability, and the whole structure cannot fail due to local damage; and the orthohexagonal outer pipe, the orthohexagonal inner pipe, the rib plate and the circular pipe are made of carbon fiber resin matrix composite material. According to the manufacturing method, the energy absorption efficiency of the energy absorption pipe can be greatly improved by utilizing a combined mold and a vacuum bag forming process.

Description

technical field [0001] The invention relates to the technical field of composite material energy-absorbing devices, in particular to a high specific energy-absorbing bionic composite material structure and a manufacturing method. Background technique [0002] Collision energy-absorbing devices can greatly improve the passive protection ability of automobiles and rail vehicles and the anti-crash ability of helicopters and aerospace vehicles, and play an important role in protecting human safety and property safety. For example, the bumper assembly of a car, the bumper assembly is mainly composed of anti-collision beams, energy-absorbing tubes, connecting plates, etc., and is connected to the body by bolts, which is easy to disassemble and facilitate maintenance. It plays a major protective role. The energy-absorbing tube absorbs most of the energy in a low-speed collision. It is of great significance to improve the passive safety performance of automobiles in the process of ...

Claims

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Application Information

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IPC IPC(8): F16F7/00B29C70/44B60R19/18
CPCB29C70/446B60R19/18F16F7/003F16F2224/0241
Inventor 段玉岗张通张绍磊邓昕
Owner XI AN JIAOTONG UNIV
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