Multi-stage honeycomb structure and design method

A design method and level honeycomb technology, applied in mechanical equipment, shock absorbers, springs/shock absorbers, etc., can solve the problem of difficult to meet the needs of use, and achieve the effect of high energy absorption performance and high specific energy absorption

Pending Publication Date: 2021-12-21
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional honeycomb materials (the cross-section of the honeycomb cell is quadrilateral, hexagonal, etc.) have been widely used in many engineering fields, but with the rapid development of modern technology, aerospace, rail transit, automobile and other fields require high The demand for quantitative materials continues to increase, while traditional honeycomb materials are gradually difficult to meet the needs of use

Method used

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  • Multi-stage honeycomb structure and design method
  • Multi-stage honeycomb structure and design method
  • Multi-stage honeycomb structure and design method

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Effect test

Embodiment 1

[0056] see figure 1 and figure 2 As shown, a multi-stage honeycomb structure provided by the embodiment of the present invention includes a plurality of honeycomb cells 1, the cross section of the honeycomb cells 1 is a regular quadrilateral, and the cell walls of the honeycomb cells 1 include a plurality of connected primary honeycomb cells. Cell 11, the first-level honeycomb unit 11 is a regular quadrilateral, the intersection of the cell walls of the first-level honeycomb unit 11 is a first-level real node, and each first-level honeycomb unit 11 has 4N first-level real nodes, where N =1, the first-level real node is replaced by the second-level honeycomb cell 12, that is, the position of the first-level real node is replaced by the second-level honeycomb cell structure. After the first-level real node is replaced by the second-level honeycomb cell unit 12, the intersection of the cell walls of the first-level honeycomb unit 11 is a second-level honeycomb unit, which will ...

Embodiment 2

[0073] The confirmation and adjustment of the multi-level structure parameters in the second embodiment and the first embodiment are basically the same, and the similarities will not be repeated. The difference is that the cross section of the honeycomb cell 1 is a regular hexagon, and the cell wall of the honeycomb cell 1 It includes a plurality of connected first-level honeycomb cells 11. The first-level honeycomb cells 11 are regular polygons. A first-level real node, the first-level real node is replaced by a second-level cellular unit 12, and the second-level cellular unit 12 is a regular polygon or a circle. When the second-level cellular unit 12 is a regular polygon, the second-level cellular unit 12 The intersection of the cell walls is a second-level real node, and each second-level honeycomb cell 12 has 3M second-level real nodes, wherein: N and M are both positive integers.

[0074] Including n secondary honeycomb cells 12 in the cell wall length direction of the ho...

Embodiment 3

[0084] The design method of the multistage honeycomb structure that the present embodiment provides, comprises the following steps:

[0085] (1) Obtain the size and performance of the required honeycomb structure;

[0086] (2) Determine the shape and size of the honeycomb cells;

[0087] (3) A plurality of connected first-level honeycomb cells are used as the cell walls of the honeycomb cells, and the intersection of the cell walls of the first-level honeycomb cells is a first-level real node, and the second-level honeycomb cells are used to replace the first-level real nodes, The intersection of the cell walls of the second-level honeycomb cell is a second-level solid node, which determines the honeycomb shape of the first-level honeycomb cell and the second-level honeycomb cell;

[0088] When the cross-section of the cell is a regular hexagon, each primary cell has 3N secondary cells, and each secondary cell has 3M secondary real nodes or the number of secondary cells The ...

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Abstract

The invention relates to the technical field of honeycomb structures and particularly relates to a multi-stage honeycomb structure and a design method. The cell wall of the multi-stage honeycomb structure comprises cell walls of a plurality of first-stage honeycomb cell elements which are connected to replace honeycomb cell elements; first-stage real nodes are replaced by second-stage honeycomb cell elements; the whole structure meets the limitation of parameters of the multi-stage structure; compared with the traditional honeycomb structure, the energy absorption performance is higher when working conditions, masses and volumes are same; according to the design method, the cell walls of the honeycomb cells are replaced by the plurality of first-stage honeycomb cells which are connected, the first-stage real nodes are replaced by the second-stage honeycomb cells; various multi-stage structure parameters are introduced, so that the geometric configuration of the multi-stage honeycomb structure can be conveniently adjusted; the large-range regulation and control of the energy absorption performance of the honeycomb structure can be realized; and engineering requirements can be met. Compared with the traditional honeycomb structure, the designed multi-stage honeycomb structure has higher specific energy absorption when the working conditions, the masses and the volumes are same.

Description

technical field [0001] The invention relates to the technical field of honeycomb structures, in particular to a multi-stage honeycomb structure and a design method. Background technique [0002] With the development of aerospace vehicles, high-speed trains, and automobiles in the direction of lightweight, low energy consumption, high speed, and high reliability, there is an urgent need for high-performance lightweight materials with lightweight, high-efficiency impact resistance and energy-absorbing properties. Typical lightweight porous material. Honeycomb materials have excellent characteristics such as high specific stiffness, high specific strength, and high energy absorption, and have been widely used in the field of impact safety protection. In engineering applications, the mass or volume of energy absorbing devices used to protect objects from impact damage is usually limited by actual conditions. Therefore, in order to ensure the safety of the protected object, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/00
CPCF16F7/00
Inventor 陶勇张爱品温伟斌冯帆邓俊杰周兴望周德黄方林
Owner CENT SOUTH UNIV
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