CN111391417A - Novel honeycomb structure and honeycomb energy-absorbing piece - Google Patents

Novel honeycomb structure and honeycomb energy-absorbing piece Download PDF

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CN111391417A
CN111391417A CN202010181279.3A CN202010181279A CN111391417A CN 111391417 A CN111391417 A CN 111391417A CN 202010181279 A CN202010181279 A CN 202010181279A CN 111391417 A CN111391417 A CN 111391417A
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honeycomb
cell
honeycomb structure
layers
cells
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CN111391417B (en
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刘荣强
黄江平
邓宗全
孙朋
王晨
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Harbin Institute of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/10—Trains

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Abstract

The application belongs to the technical field of energy-absorbing materials, and provides a novel honeycomb structure which comprises a plurality of honeycomb units, wherein the periphery of each honeycomb unit is provided with the plurality of honeycomb units, each honeycomb unit comprises at least two cells and at least two connecting parts, the apertures of the at least two cells are different, and the cell with the larger aperture is sleeved outside the cell with the smaller aperture; a gap is formed between the two mutually nested cells and the two cells are connected through two connecting parts, and the two connecting parts are respectively positioned at two opposite sides of the cell with the smaller aperture; still provide a honeycomb energy-absorbing piece, honeycomb energy-absorbing piece has novel honeycomb structure. The utility model provides a novel honeycomb structure and honeycomb energy-absorbing piece have adopted a plurality of honeycomb units that are formed by two at least cell nestings to constitute to but solved the little technical problem of honeycomb structure's intensity adjustable range effectively, but feasible honeycomb structure's adjustable strength's level refines more in actual engineering application, designability is stronger.

Description

Novel honeycomb structure and honeycomb energy-absorbing piece
Technical Field
The application belongs to the technical field of energy-absorbing materials, and particularly relates to a novel honeycomb structure and a honeycomb energy-absorbing piece.
Background
With the rapid development of high-speed rails and urban railways in China, convenient and efficient rail transit becomes the first choice for many people to go out, and the safety protection of the rail transit is very important. As an important subject in the field of safety protection, collision buffering and energy absorption have been attracting much attention, and various structural forms such as hydraulic pressure, springs, metal cutting, honeycombs and the like have been derived in the field, wherein the honeycomb type energy absorber has wide application in the fields of automobiles, rail transit and the like due to the advantages of light weight and high strength. The manufacturing process of the honeycomb is mainly divided into two types: the method comprises the following steps of (1) coating a bonding agent on an aluminum foil sheet at intervals of the same width, wherein the coating interval is three times of the side length of a cell, the coating width is equal to the side length of the cell, the aluminum foil sheets are sequentially superposed layer by layer to form an aluminum foil block, and the aluminum foil block is stretched to form a honeycomb block after the bonding agent is cured; the forming method is that the aluminum foil is rolled or punched into a half-hexagon corrugated sheet, then the crest face of the corrugated sheet is coated with the adhesive and is overlapped layer by layer to finally form the honeycomb block, the honeycomb block prepared by the forming method has good consistency, and the honeycomb with smaller cell aperture and larger wall thickness can be formed, so the forming method can prepare the honeycomb with higher strength.
At present, the most widely used honeycomb is a regular hexagon honeycomb, the average compression strength of the honeycomb is in direct proportion to the power of the ratio of the thickness of cells to the side length, therefore, if a high-strength honeycomb is to be obtained, the side length of the cells needs to be reduced and the wall thickness needs to be increased, great difficulty is brought to the honeycomb forming, the corrugated sheets with thick wall thickness and small side length have poor forming precision, the honeycomb consistency is poor, meanwhile, the small side length can also cause the coating surface of a binder to be small, the honeycomb is easy to crack when compressed, and the energy absorption performance is greatly influenced. Due to these practical process limitations, the highest strength of honeycombs that can be produced at present is limited. In engineering application, the energy absorber is usually required to be miniaturized and lightened as much as possible, so that the bearing section of the energy absorber is required to be reduced as much as possible under the condition of meeting the energy absorption requirement, for the honeycomb type energy absorber, the reduction of the bearing section means the increase of the strength of the honeycomb, and in order to meet the higher energy absorption requirement, a honeycomb with higher strength needs to be manufactured. In addition, strength requirements for the honeycomb vary from application to application, and therefore the strength of the honeycomb should be adjustable. For common honeycombs, although honeycombs with different strengths can be obtained by adjusting the side length and the wall thickness of cells, the adjustable range and the adjustable distance of the honeycomb strength are very limited due to the limitation of the thickness of aluminum foil and the technological limitation of corrugated sheet forming on the market.
Disclosure of Invention
The utility model provides a novel honeycomb and honeycomb energy-absorbing piece, including but not limited to solve the little technical problem of honeycomb's intensity adjustable range.
In order to achieve the above object, the present application provides a novel honeycomb structure, including a plurality of honeycomb units, each of which has a plurality of honeycomb units around its outer periphery, the honeycomb units include at least two cells and at least two connecting portions, the at least two cells have different apertures, and the cells with larger apertures are sleeved outside the cells with smaller apertures; the two mutually nested holes are provided with gaps and connected through the two connecting parts, and the two connecting parts are respectively positioned at two opposite sides of the hole with the smaller aperture.
Optionally, the cross-sectional profile of the cell is polygonal, the cross-sectional profile of the cell includes two symmetrically arranged folding lines, and the folding lines are formed by sequentially connecting at least two line segments.
Optionally, the cross-sectional profile of the cell is circular or fusiform, and the cross-sectional profile of the cell comprises two arcs which are symmetrically arranged.
Optionally, in two mutually nested wells, a cross-sectional profile of one of the wells is polygonal, the cross-sectional profile of the well includes two symmetrically arranged folding lines, each folding line is formed by sequentially connecting at least two line segments, a cross-sectional profile of the other one of the wells is circular or fusiform, and the cross-sectional profile of the well includes two symmetrically arranged arc lines.
Optionally, the connecting portion extends outwards from the hole wall of the smaller-diameter cell, and the thickness of the connecting portion is equal to twice the thickness of the hole wall.
The application also provides a honeycomb energy-absorbing piece, honeycomb energy-absorbing piece has above-mentioned novel honeycomb structure.
Optionally, the honeycomb energy absorption piece comprises n layers of first corrugated plates and (n-1) × 2 layers of second corrugated plates, wherein n is an integer greater than or equal to 2, the n layers of first corrugated plates and (n-1) × 2 layers of second corrugated plates are stacked, two layers of second corrugated plates are arranged between two adjacent layers of first corrugated plates, and the two layers of second corrugated plates and the two layers of first corrugated plates form an energy absorption layer with a plurality of honeycomb units; and the two layers of the second corrugated plates are symmetrically arranged and enclose to form a plurality of the holes with smaller apertures.
Optionally, in the energy absorbing layer, in an order from top to bottom, bottom surfaces of troughs of the first corrugated plate are connected to top surfaces of troughs of the adjacent second corrugated plate, bottom surfaces of troughs of the second corrugated plate are connected to top surfaces of peaks of the adjacent second corrugated plate, and bottom surfaces of peaks of the other second corrugated plate are connected to top surfaces of peaks of the adjacent first corrugated plate.
Optionally, the first corrugated plate and the second corrugated plate and two layers of the second corrugated plates are bonded or welded to each other.
The application provides a novel honeycomb structure and honeycomb energy-absorbing piece's beneficial effect lies in: the honeycomb structure is formed by a plurality of honeycomb units formed by nesting at least two cells, so that the technical problem that the strength adjustable range of the honeycomb structure is small is effectively solved, and the strength adjustable grade of the honeycomb structure is more detailed and the designability is stronger in practical engineering application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic partial front view of a novel honeycomb structure provided in an embodiment of the present application;
fig. 2 is a schematic perspective view of a honeycomb unit in a novel honeycomb structure provided in an embodiment of the present application;
fig. 3 is a schematic front view of a honeycomb unit in the novel honeycomb structure provided by the embodiment of the present application;
FIG. 4 is a schematic partial perspective view of a honeycomb energy absorber provided in accordance with embodiments of the present disclosure;
FIG. 5 is a schematic partial perspective view of an energy absorbing layer in a honeycomb energy absorbing member according to an embodiment of the present disclosure;
FIG. 6 is a schematic partially exploded view of an energy absorbing layer in a honeycomb energy absorbing member according to an embodiment of the present disclosure;
fig. 7 is a partial front view of a conventional hexagonal honeycomb structure.
Wherein, in the figures, the respective reference numerals:
1-honeycomb energy absorbing piece, 2-common hexagonal honeycomb structure, 10-novel honeycomb structure, 20-energy absorbing layer, 21 '-first corrugated plate, 22' -second corrugated plate, 100-honeycomb unit, 101-cell with larger aperture, 102-cell with smaller aperture, 103-connecting part, 211-peak of first corrugated plate, 212-trough of first corrugated plate, 221-peak of second corrugated plate, 222-trough of second corrugated plate, l1Side length of the macropore lattice, /)2Length of sides of cells，l3Distance between two adjacent cells, t1Wall thickness of macropores, t2Wall thickness of cells, θ1Angle of cells of large pores theta2-the angle of the cells, l-the side length of the regular hexagonal cells, t-the wall thickness of the regular hexagonal cells.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that: when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience of description only and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore are not to be construed as limiting the patent, the particular meaning of which terms will be understood by those skilled in the art as appropriate. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and fig. 2, a novel honeycomb structure 10 provided by the present application includes a plurality of honeycomb units 100, where a plurality of honeycomb units 100 are disposed around an outer periphery of each honeycomb unit 100, that is, another plurality of honeycomb units 100 are disposed around each honeycomb unit 100, specifically, the honeycomb unit 100 includes at least two cells and at least two connecting portions 103, apertures of the at least two cells are different, and a cell 101 with a larger aperture is sleeved outside a cell 102 with a smaller aperture, that is, apertures of two adjacent cells in the at least two cells that are nested with each other are not equal; a gap is formed between the two cells which are nested with each other, and the two cells which are nested with each other are connected by two connecting parts 103, and the two connecting parts 103 are respectively positioned at two opposite sides of the cell 102 with the smaller aperture. It is understood that two adjacent honeycomb units 100 may share the hole wall of one larger-diameter cell 101, or may be connected by the hole walls of two larger-diameter cells 101.
Optionally, referring to fig. 1, as a specific example of the novel honeycomb structure provided by the present application, a cross-sectional profile of the cells is polygonal, specifically, the cross-sectional profile of the cells includes two folding lines, the two folding lines are symmetrically arranged and enclose to form a polygon, wherein each folding line is formed by sequentially connecting at least two line segments, that is, the cross-sectional profile of the cells may be a prism, a hexagon, an octagon, or the like.
Optionally, as a specific example of the novel honeycomb structure provided by the present application, the cross-sectional profile of the cells is circular or fusiform, specifically, the cross-sectional profile of the cells includes two arcs, and the two arcs are symmetrically arranged and enclose to form a circle or a fusiform.
Alternatively, as a specific example of the novel honeycomb structure provided by the present application, in two cells nested into each other, the cross-sectional profile of one cell is polygonal, and the cross-sectional profile of the other cell is circular or fusiform, that is, in the same honeycomb unit 100, the cross-sectional profile of one cell can be polygonal, and the cross-sectional profile of the other cell can be circular or fusiform. Specifically, the cross section profile of polygon cell includes two broken lines, and two broken lines symmetry set up and enclose and close and form the polygon, and wherein every broken line is connected mutually in proper order by at least two line segments and is constituteed, and the cross section profile of circular or fusiformis cell includes two arcs lines, and two arcs symmetry set up and enclose and close and form circular or fusiformis.
Optionally, referring to fig. 3, as a specific example of the novel honeycomb structure provided by the present application, the connection portion 103 extends outward from the hole wall of the smaller-diameter cell 102, and the thickness of the connection portion 103 is equal to twice the thickness of the hole wall, that is, the smaller-diameter cell 102 and the connection portion 103 are integrally formed, and the connection portion 103 protrudes outside the smaller-diameter cell 102 and is connected to the larger-diameter cell 101, so that the strength of connecting the smaller-diameter cell 102 and the larger-diameter cell 101 is improved, and the structure of the honeycomb unit 100 is more stable and reliable.
For the sake of convenience in explaining the influence of the structure of the honeycomb unit 100 on the strength of the whole novel honeycomb structure 10, the honeycomb unit 100 composed of two nested cells and having hexagonal cross-sectional profiles is taken as an example, and for the sake of brevity, the cell 101 with a larger pore diameter is referred to as a large cell, and the cell 102 with a smaller pore diameter is referred to as a small cell. Referring to FIGS. 2 and 3, the side length of the big cell is l1Wall thickness of the macropore lattice is t1The angle of the big hole lattice is theta1The side length of the small hole grid is l2The distance between two adjacent small cells is l3Wall thickness of cell is t2The angle of the cell is theta2Then at x2In the direction, the space between the big hole grids is l1sin(θ1/2)-l1sin(θ2/2) at x1In the direction, the space between the big hole grids is l3/2-l12; when the novel honeycomb structure 10 is subjected to x3When the impact force is in the direction, the hole walls of the big cells and the hole walls of the small cells are subjected to gradual shrinkage deformation, if the shrinkage wavelength is H, the shrinkage wavelength is generally half of the side length of the cells according to the research result of the honeycomb structure compression, namely for the big cells, the shrinkage wavelength H of the big cells is H1＝l1[ 2 ] for the cell, the shrinkage wavelength H of the cell2＝l22; to is coming toThe large and small cells are not subjected to telescoping interference when the honeycomb structure is compressed, the distance between the hole walls of the large and small cells is larger than or equal to the sum of the half-wavelength of the telescoping of the large and small cells, namely the sizes of the large and small cells meet the relationship shown in formula (1):
Figure BDA0002412662220000061
according to the mechanics of honeycomb materials, the strength of the regular hexagonal honeycomb structure 2 (see fig. 7) can be calculated by formula (2):
Figure BDA0002412662220000062
wherein
Figure BDA0002412662220000071
Figure BDA0002412662220000072
σ is the honeycomb compressive strength, σysIs the yield strength of the base material;
then the intensity of the macropores σLIntensity σ of the cells as in equation (3)SIntensity σ of the honeycomb cell 100 as in equation (4)TCan be approximated as a linear superposition of the large and small cell intensities, as in equation (5):
Figure BDA0002412662220000073
Figure BDA0002412662220000074
Figure BDA0002412662220000075
this can be derived from equations (2) and (5): if there are 3 substrate thickness (be cell wall thickness) t for making honeycomb, and cell side length l of honeycomb unit also has 3, then current ordinary hexagon honeycomb 2 can make 9 kinds of honeycomb spare of different intensity at most theoretically, and the novel honeycomb 10 that this application provided can make 36 kinds of honeycomb spare of different intensity at most theoretically, thereby solved the little technical problem of honeycomb's intensity adjustable range effectively, but the adjustable intensity's of feasible honeycomb in actual engineering application grade is more refined, designability is stronger.
If theta is 2 pi/3, I when the cross-sectional profile of the honeycomb unit is a regular hexagon1(ψ0)＝1.05，I3(ψ0) 2.39; therefore, the strength calculation formula (6) of the common regular hexagonal honeycomb structure can be obtained:
Figure BDA0002412662220000081
and if the side length and wall thickness of the large cells are the same as those of the conventional regular hexagonal honeycomb structure, i.e. /)1＝l、t1T. Taking the formula (1) as an equal sign, the side length of the small cell and the distance between two adjacent small cells can be obtained as the formula (7), and if the wall thickness of the small cell is the same as that of the large cell, t is1＝t2Then, the strength calculation formula (8) of the new honeycomb structure 10 is obtained:
Figure BDA0002412662220000082
Figure BDA0002412662220000083
this can be derived from a comparison of equation (6) and equation (8): the strength of the novel honeycomb structure 10 is at least 2.6 times of that of the common hexagonal honeycomb structure 2, so that the strength adjustable range of the honeycomb piece is effectively enlarged by the novel honeycomb structure 10 provided by the application, and the strength of the honeycomb piece is further increased.
Referring to fig. 4 to 6, the present application further provides a honeycomb energy absorbing member 1, and the honeycomb energy absorbing member 1 has a novel honeycomb structure 10. Thus, the honeycomb energy absorption piece 1 is composed of a plurality of honeycomb units 100 formed by nesting at least two cells, so that the technical problem that the strength adjustable range of the honeycomb structure is small is effectively solved, and the adjustable strength of the honeycomb structure is more detailed in grade and stronger in designability in practical engineering application.
Optionally, referring to fig. 4 and 5, as a specific embodiment of the honeycomb energy absorbing member provided by the present application, the honeycomb energy absorbing member 1 includes n layers of first corrugated plates 21 and (n-1) × 2 layers of second corrugated plates 22, where n is an integer greater than or equal to 2, where the n layers of first corrugated plates 21 and (n-1) × 2 layers of second corrugated plates 22 are stacked, and two layers of second corrugated plates 22 are disposed between two adjacent layers of first corrugated plates 21, and the two adjacent layers of first corrugated plates 21 and two layers of second corrugated plates 22 may form an energy absorbing layer 20 having a plurality of honeycomb units 100, that is, one layer of first corrugated plate 21 is shared between two adjacent energy absorbing layers 20, so that the structure of the whole honeycomb energy absorbing member 1 is simpler and more compact, the production cost is saved, and the overall weight of the honeycomb energy absorbing member 1 is reduced. Specifically, in the same energy absorption layer 20, two layers of first corrugated plates 21 are symmetrically arranged and enclose to form a plurality of cells 101 with larger pore diameters, and two layers of second corrugated plates 22 are symmetrically arranged and enclose to form a plurality of cells 102 with smaller pore diameters, that is, in the same energy absorption layer 20, a plurality of honeycomb units 100 are distributed side by side at equal intervals.
Alternatively, referring to fig. 6, as an embodiment of the honeycomb energy absorbing member provided by the present application, in the same energy absorbing layer 20 and in the sequence from top to bottom, the bottom surfaces of the troughs of the first corrugated plate 21 are connected to the top surfaces of the troughs of the adjacent second corrugated plate 22, the bottom surfaces of the troughs of the second corrugated plate 22 are connected to the top surfaces of the crests of the adjacent second corrugated plate 22 ', and the bottom surfaces of the crests of the other second corrugated plate 22 ' are connected to the top surfaces of the crests of the adjacent first corrugated plate 21 '. Specifically, the first corrugated plate 21(21 ') and the second corrugated plate 22(22 '), and the two layers of second corrugated plates (i.e., the second corrugated plate 22 and the other layer of second corrugated plate 22 ') can be adhered to each other by coating an adhesive on the surfaces of the peaks and the valleys, or welded to each other by means of laser or electric arc, etc., thereby ensuring that the energy absorption layer 20 can form a plurality of stable honeycomb units 100, and the structure of the whole honeycomb energy absorption member 1 is more firm and reliable.
In the embodiments provided in the present application, the substrate for making the honeycomb energy absorbing member 1 may be metal, non-metal, or composite material, etc., and is not limited herein.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (9)

1. Novel honeycomb structure, including a plurality of honeycomb units, each the outer periphery of honeycomb unit is equipped with a plurality of honeycomb unit, its characterized in that: the honeycomb unit comprises at least two cells and at least two connecting parts, the apertures of the at least two cells are different, and the cell with the larger aperture is sleeved outside the cell with the smaller aperture; the two mutually nested holes are provided with gaps and connected through the two connecting parts, and the two connecting parts are respectively positioned at two opposite sides of the hole with the smaller aperture.
2. The novel honeycomb structure of claim 1, wherein: the cross section profile of the cell is polygonal, the cross section profile of the cell comprises two symmetrically arranged folding lines, and the folding lines are formed by sequentially connecting at least two line segments.
3. The novel honeycomb structure of claim 1, wherein: the cross section profile of the cell is circular or fusiform, and the cross section profile of the cell comprises two arc lines which are symmetrically arranged.
4. The novel honeycomb structure of claim 1, wherein: in two mutually nested holes, the cross section outline of one of the holes is polygonal, the cross section outline of the hole comprises two symmetrically arranged folding lines, the folding lines are formed by sequentially connecting at least two line segments, the cross section outline of the other hole is circular or fusiform, and the cross section outline of the hole comprises two symmetrically arranged arc lines.
5. The novel honeycomb structure of any one of claims 1 to 4, wherein: the connecting part extends outwards from the hole wall of the hole with the smaller hole diameter, and the thickness of the connecting part is equal to twice of the thickness of the hole wall.
6. Honeycomb energy-absorbing spare, its characterized in that: the honeycomb energy absorbing member has a novel honeycomb structure of any one of claims 1 to 5.
7. The honeycomb energy absorber of claim 6, wherein: the honeycomb structure comprises n layers of first corrugated plates and (n-1) 2 layers of second corrugated plates, wherein n is an integer larger than or equal to 2, the n layers of first corrugated plates and (n-1) 2 layers of second corrugated plates are stacked, two layers of second corrugated plates are arranged between every two adjacent layers of first corrugated plates, and the two layers of second corrugated plates form an energy absorption layer with a plurality of honeycomb units; and the two layers of the second corrugated plates are symmetrically arranged and enclose to form a plurality of the holes with smaller apertures.
8. The honeycomb energy absorber of claim 7, wherein: and the bottom surfaces of the wave troughs of the first corrugated plate are connected with the top surfaces of the wave troughs of the adjacent second corrugated plate according to the arrangement sequence from top to bottom in the energy absorption layer, the bottom surfaces of the wave troughs of the second corrugated plate are connected with the top surfaces of the wave crests of the adjacent other layer of the second corrugated plate, and the bottom surfaces of the wave crests of the other layer of the second corrugated plate are connected with the top surfaces of the wave crests of the adjacent other layer of the first corrugated plate.
9. The honeycomb energy absorber of claim 8, wherein: the first corrugated plate, the second corrugated plate and the two layers of the second corrugated plates are bonded or welded with each other.
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