All-metal hollow dot matrix-honeycomb mixed sandwich structure and interlocking preparation method thereof

A sandwich structure, all-metal technology, applied in underwater anti-explosion, aerospace, marine, transportation and construction fields, can solve the problem of poor energy absorption effect, achieve improved surface-core connection strength, excellent energy absorption characteristics, The effect of increasing the shear strength

Inactive Publication Date: 2017-10-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy absorption capacity per unit volume of the hollow pyramid lattice truss structure is comparable to other core structures, and the energy absorption effect is inferior to that of the honeycomb structure under low impact loads.

Method used

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  • All-metal hollow dot matrix-honeycomb mixed sandwich structure and interlocking preparation method thereof
  • All-metal hollow dot matrix-honeycomb mixed sandwich structure and interlocking preparation method thereof
  • All-metal hollow dot matrix-honeycomb mixed sandwich structure and interlocking preparation method thereof

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Experimental program
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specific Embodiment approach 1

[0037] Specific implementation mode one: combine Figure 1 to Figure 15 Describe this embodiment, an all-metal hollow pyramid lattice-square honeycomb hybrid sandwich panel device in this embodiment includes an upper panel 1 and a lower panel 2, the upper panel 1 and the lower panel 2 are arranged in parallel up and down, and it also includes a square The honeycomb interlocking assembly and a plurality of inclined circular tubes 3 with long and narrow slots, the square honeycomb interlocking assembly is installed between the upper panel 1 and the lower panel 2, and multiple inclined round tubes 3 with narrow and long slots are obliquely inserted and locked in The oblique circular tube of the square honeycomb interlocking component is embedded in the interlocking groove.

[0038] On the basis of retaining the complete square honeycomb structure, the cutting-interlocking preparation process of the present invention skillfully kneads the hollow pyramid lattice structure and the s...

specific Embodiment approach 2

[0039] Specific implementation mode two: combination Figure 1 to Figure 11 Describe this embodiment, the square honeycomb interlocking assembly of this embodiment includes a plurality of first locking pieces 4 and a plurality of second locking pieces 5, a plurality of first locking pieces 4 are arranged in parallel at equal intervals, and a plurality of second locking pieces 5 Equidistantly arranged in parallel and interlocked one by one on multiple first locking pieces 4 . With such arrangement, it is convenient to form a square honeycomb interlocking component, and the assembly process is simple. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0040] Specific implementation mode three: combination Figure 1 to Figure 11 To describe this embodiment, the upper parts of the plurality of first locking pieces 4 and the lower parts of the plurality of second locking pieces 5 of this embodiment are provided with inserting and interlocking grooves 6 at equal intervals. Such an arrangement facilitates interlocking and plugging of multiple first locking pieces 4 and multiple second locking pieces 5 , and accurate installation and positioning. Other compositions and connections are the same as those in the second embodiment.

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Abstract

The invention discloses an all-metal hollow dot matrix-honeycomb mixed sandwich structure and an interlocking preparation method thereof and relates to a sandwich structure and an interlocking preparation method thereof. The invention aims to enhance the energy absorption capability of a metal honeycomb and improve the shear strength. An upper panel and a lower panel are arranged in parallel from top to bottom; square honeycomb interlocking formation sheets are assembled by interlocking and then arranged between the upper and lower panels; multiple oblique round tubes with narrow-long notches are interlocked to the assembly one by one to form a hollow pyramid type dot matrix-square honeycomb mixed core which then is combined with the upper and lower panels to form a sandwich structure. The preparation method comprises the following steps: (I) processing a core component and panels; (II) interlocking to assemble the dot matrix-honeycomb mixed core, and then combining with the upper and lower panels to form a sandwich structure assembly; (III) connecting by a vacuum welding technology to form a whole structure. The all-metal hollow dot matrix-honeycomb mixed sandwich structure disclosed by the invention is applied to the fields such as aerospace, ships and oceans, underwater blast resistance and transportation buildings as an efficient energy absorption protection device.

Description

technical field [0001] The invention relates to a sandwich structure and a preparation method thereof, in particular to an all-metal hollow lattice-honeycomb hybrid sandwich structure and an interlocking preparation method thereof, which are suitable for aerospace, ships and oceans, underwater explosion resistance, and traffic construction and other fields. Background technique [0002] In recent years, more and more high-performance energy-absorbing materials (structures) have been the research focus. Porous structures are widely used as high-performance energy-absorbing media because of their light weight and high-efficiency energy absorption. They are usually used as core materials of sandwich beams to absorb external impact energy and explosion energy. Porous structures include random foams and periodic porous structures, which include structural materials such as honeycombs and microscale truss lattices. [0003] As a two-dimensional ordered ultra-light porous structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B3/08B32B3/12B32B33/00B23K1/00B60R19/18F42D5/045
CPCB23K1/0014B32B3/08B32B3/12B32B15/01B32B33/00B32B2307/558B32B2307/56B32B2307/581B60R19/18B60R2019/1866F42D5/045
Inventor 吴林志胡滨吴倩倩魏光涛
Owner HARBIN INST OF TECH
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