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Corrugated-folded paper multistage sandwich energy absorption structure and preparation method thereof

A technology of energy-absorbing structures and origami structures, applied in chemical instruments and methods, protective equipment, and other household appliances, can solve problems such as insufficient energy absorption capacity, prone to structural instability, and single structural forms, so as to improve energy absorption Capacity, extension of compression and densification strain, and improvement of energy absorption stroke

Active Publication Date: 2020-09-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The research on the corrugated structure is relatively mature, and its structural form is slightly single. After reaching the load-bearing limit, the structure is prone to instability, and the load-bearing energy absorption is limited.
In the classic Miura-Ori structure of the origami structure, the deformation constraints of two adjacent inclined plates are increased due to the existence of the intersecting edges at the intersection, and its bearing capacity is significantly improved. However, both of them have insufficient energy absorption capacity in the subsequent deformation. Defects

Method used

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  • Corrugated-folded paper multistage sandwich energy absorption structure and preparation method thereof
  • Corrugated-folded paper multistage sandwich energy absorption structure and preparation method thereof
  • Corrugated-folded paper multistage sandwich energy absorption structure and preparation method thereof

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preparation example Construction

[0041] A method for preparing a corrugated-origami multi-stage sandwich energy-absorbing structure of the present invention, first draws the data model of the corrugated-origami multi-stage sandwich energy-absorbing structure, then slices the digital cross-section of the data model to obtain slice data, and slices the data Import a 3D printer, select metal powder raw materials according to the situation, and integrate processing and molding through a 3D printer to obtain a corrugated-origami multi-stage sandwich energy-absorbing structure. The specific steps are as follows:

[0042] S1. Determine the adjustable geometric parameters related to the corrugated-origami multi-stage sandwich energy-absorbing structure according to specific needs and actual conditions, draw the 3D data model of the structure through the commercial 3D modeling software SolidWorks, and convert the obtained 3D data model into STL format data and export;

[0043] Relevant adjustable geometric parameters ...

Embodiment 1

[0048] (1) Use the commercial 3D modeling software SolidWorks to draw the 3D data model of the corrugated-origami multi-stage sandwich energy-absorbing structure. The upper panel is a square plate with a side length of 60mm and a thickness of 1mm; the lower panel is a square plate with a side length of 60mm and a thickness of 1mm; the corrugated-origami multi-level structural unit cell forming the core part is shown in the following geometric model image 3 (a), the four ridges formed at the joints of the left and right adjacent corrugated sandwich panels form an acute angle of 60° with the upper and lower panels, and the angle of the "herringbone" shape in the top view is 90°; for the corrugated sandwich panels with secondary structure, the outer The wall thickness of the corrugated plate covering the panel and the core body is 1 mm, the corrugated core body is a 60° regular triangular corrugation, and the direction of the corrugated channel is horizontal. Convert the drawn 3...

Embodiment 2

[0052] (1) Use the commercial 3D modeling software SolidWorks to draw the 3D data model of the corrugated-origami multi-stage sandwich energy-absorbing structure. The upper panel is a square plate with a side length of 60mm and a thickness of 0.5mm; the lower panel is a square plate with a side length of 60mm and a thickness of 0.5mm; the corrugated-origami multi-level structural unit cell that forms the core part is shown in the following geometric model image 3 (b), the four ridges formed at the joints of the left and right adjacent corrugated sandwich panels form an acute angle of 30° with the upper and lower panels, and the angle of the "herringbone" shape in the top view is 60°; for the corrugated sandwich panels with secondary structure, the outer The wall thickness of the covering panel and the corrugated plate as the core is 0.5mm, the corrugated core is 60° isosceles trapezoidal corrugation, and the direction of the corrugated channel is horizontal. Convert the drawn...

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Abstract

The invention discloses a corrugated-folded paper multistage sandwich energy absorption structure and a preparation method thereof. A core body comprises a plurality of corrugated-folded multistage structure unit cells, each structure unit cell is composed of four inclined corrugated sandwich plates, and a top view is in a symmetrical herringbone shape. The structure is modeled through commercialsoftware, digitalized slicing is conducted, finally, the structure is guided into a 3D printer to be integrally formed, and the corrugated-folded paper multi-stage sandwich energy absorption structureis obtained. Hybrid composite design and preparation of the corrugated and folded paper structures are achieved, and the obtained corrugated-folded paper multistage sandwich energy absorption structure has the advantages of being high in bearing capacity, buckling resistance and energy absorption capacity and has very good application prospects in the fields of aerospace, transportation, high-endequipment and national defense and military affairs.

Description

technical field [0001] The invention belongs to the technical field of lightweight porous energy-absorbing structures, in particular to a corrugated-origami multi-stage sandwich energy-absorbing structure and a preparation method thereof, which can be used as a new type of lightweight and high-strength energy-absorbing member in aerospace, vehicles, Ships, military armor and other industries. Background technique [0002] In recent years, with the development of industrial equipment, material preparation and mechanical processing technology, a variety of lightweight porous materials have emerged as a new type of multifunctional material. Functional integration. Compared with traditional materials, lightweight porous materials have ever-changing microstructures and higher porosity, and can be roughly divided into two categories: disordered and ordered according to the degree of regularity of their core microstructures: the former includes foaming materials (such as metal fo...

Claims

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Application Information

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IPC IPC(8): B32B15/01B32B15/18B32B3/18B32B3/28B22F3/105B33Y10/00B33Y80/00
CPCB32B3/18B32B3/28B32B15/01B32B15/011B32B2307/54B32B2571/02B32B2605/12B33Y10/00B33Y80/00
Inventor 韩宾岳增申吴昊张琦卢天健
Owner XI AN JIAOTONG UNIV
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