阅读说明：本技术 一种基于双向堆叠三浦折叠的蜂窝材料 (Honeycomb material based on bidirectional stacking three-pump folding ) 是由 蔡建国 马瑞君 张骞 孙逸夫 冯健 于 2021-09-28 设计创作，主要内容包括：本发明涉及一种基于双向堆叠三浦折叠的蜂窝材料,包括蜂窝板和隔板,所述隔板为三浦折叠型结构,所述蜂窝板和隔板相互叠加组合而成,所述蜂窝板由两种不同参数的三浦折叠型结构组成,两种结构在接触面的形状相同,能在顶端及底端折痕处完全重合,所述隔板与蜂窝板结构形状吻合,并与每个蜂窝板单元的底端相连；本发明可根据不同的耗能设计要求,通过调节蜂窝板与隔板的参数来调整各个方向的刚度,具有良好的面内刚度、面内抗剪切性、连通性和耗能能力。(The invention relates to a honeycomb material folded based on bidirectional stacking three pumps, which comprises a honeycomb plate and a partition plate, wherein the partition plate is of a three-pump folding structure, the honeycomb plate and the partition plate are mutually overlapped and combined to form the honeycomb plate, the honeycomb plate consists of two three-pump folding structures with different parameters, the two structures have the same shape on a contact surface and can be completely overlapped at creases at the top end and the bottom end, and the partition plate is matched with the structure of the honeycomb plate in shape and is connected with the bottom end of each honeycomb plate unit; the rigidity of each direction can be adjusted by adjusting the parameters of the honeycomb plate and the partition plate according to different energy consumption design requirements, and the honeycomb plate has good in-plane rigidity, in-plane shear resistance, connectivity and energy consumption capability.)

1. A honeycomb material based on bidirectional stacking three-pump folding is characterized in that: the honeycomb plate structure comprises a plurality of honeycomb plates (2) and a plurality of partition plates (1), wherein the honeycomb plates (2) are laid between every two adjacent partition plates (1);

the honeycomb plate (2) comprises a plurality of honeycomb plate (2) groups which are stacked, each honeycomb plate (2) group comprises a plurality of honeycomb units which are sequentially connected and laid, each honeycomb unit comprises a high-rise structure (3) and a low-rise structure (4), the high-rise structure (3) and the low-rise structure (4) are of three-pump folding type structures, the parameters of the three-pump folding type structures forming the two honeycomb units are different, the high-rise structure (3) is sleeved on the top of the low-rise structure (4),

the high-rise structure (3) comprises high-rise transverse creases (31) and high-rise vertical creases (32), an included angle (33) between the creases is formed, a high-rise folding angle (34) is formed by the high-rise structure (3) during folding, similarly, the low-rise structure (4) comprises low-rise transverse creases (41) and low-rise vertical creases (42), an included angle (43) between the creases is formed, a low-rise folding angle (44) is formed by the low-rise structure (4) during folding, the length of the high-rise transverse creases (31) is larger than that of the low-rise transverse creases (41), and the included angle (33) between the high-rise creases is larger than that (43) between the creases; when the high-layer structure (3) and the low-layer structure (4) are overlapped, the direction of simultaneous protrusion is the positive direction of a Z axis, a high-layer folding angle (34) is positioned above a low-layer folding angle (44), a height difference is formed between the high-layer folding angle (34) and the low-layer folding angle (44), and two sides of the high-layer structure (3) are overlapped with two sides of the low-layer structure (4); when the honeycomb units are laid, the direction of a connecting line formed by the convex parts is an X axis, and the direction in which the side edges of the honeycomb units are connected is a Y axis, so that a three-dimensional coordinate system is established;

the partition board (1) is positioned in the X-axis direction of the three-dimensional coordinate system.

2. The honeycomb material according to claim 1, wherein: the two sides of the high-layer structure (3) and the two sides of the low-layer structure (4) are partially overlapped to form the side edges of the honeycomb units, wherein the included angle formed by the side edges of the high-layer structure (3) is twice of the included angle (33) between the high-layer creases after being unfolded, and the included angle formed by the side edges of the low-layer structure (4) is twice of the included angle (43) between the low-layer creases after being unfolded.

3. The honeycomb material according to claim 2, wherein: baffle (1) is three pu's folded form structures equally, including horizontal crease (11) of baffle and the vertical crease (12) of baffle, forms contained angle (13) between the baffle crease between its crease, and baffle (1) shape matches with the side shape of a plurality of honeycomb unit, and baffle (1) is the folded form this moment, forms baffle folded angle (14).

4. The honeycomb material according to claim 1, wherein: when the high-level structure (3) is superposed on the low-level structure (4), the projections on the XY plane of the coordinate system are superposed.

5. The honeycomb material according to claim 1, wherein: the contact part of the honeycomb plate (2) and the clapboard (1) adopts brazing connection.

6. The honeycomb material according to claim 1, wherein: the contact part of the high-layer structure (3) and the low-layer structure (4) is connected by brazing.

7. The honeycomb material according to claim 1, wherein: the honeycomb plate (2) and the partition plate (1) are made of aluminum plates.

8. The honeycomb material according to claim 1, wherein: the thickness ratio of the partition board (1) to the honeycomb board (2) is 0.1-10.

Technical Field

The invention relates to a honeycomb material based on bidirectional stacking three-pump folding, and belongs to the technical field of honeycomb plates.

Background

The honeycomb material is used as an efficient and environment-friendly buffering energy-consuming material, and has wide application in the fields of aerospace and traffic due to the light weight and high strength of the honeycomb material. The traditional honeycomb plate usually adopts a hexahedral columnar structure, or is optimized and improved on the basis, the deformation of the honeycomb structure when bearing an external load is utilized to achieve the energy consumption effect, and the honeycomb plate is an excellent structure which fully utilizes the material performance. However, the disadvantage is also obvious, the in-plane bearing capacity of the traditional honeycomb plate is far lower than the out-of-plane bearing capacity, so that when the structure is subjected to impact load in the in-plane direction, the in-plane damage precedes the out-of-plane damage, and the bearing performance of the honeycomb plate cannot be fully exerted. Secondly, the traditional honeycomb has a closed property, once manufactured, the inside and the outside of the honeycomb plate are completely separated, so that moisture inside the honeycomb plate is condensed and cannot be discharged in the using process, and further, the material is corroded.

With the development of society, the requirements on the used materials are higher and higher, and the uncertainty of the direction of the load bearing of the energy-consuming material greatly limits the applicable space of the traditional honeycomb; meanwhile, in order to meet the requirement of environmental protection, the service life of the material is also an indispensable requirement. However, it is difficult to effectively improve the in-plane rigidity and the service life of the honeycomb panel by modifying the conventional hexagonal honeycomb structure without changing the structural form.

Disclosure of Invention

The invention provides a honeycomb material based on bidirectional stacking three-pump folding, which can improve the in-plane rigidity, the anti-shearing capability and the service life of a honeycomb plate.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a honeycomb material based on bidirectional stacking three-pump folding comprises a plurality of honeycomb plates and a plurality of partition plates, wherein the honeycomb plates are laid between every two adjacent partition plates;

the honeycomb plate comprises a plurality of stacked honeycomb plate groups, each honeycomb plate group comprises a plurality of honeycomb units which are sequentially connected and laid, each honeycomb unit comprises a high-rise structure and a low-rise structure, the high-rise structure and the low-rise structure are of three-pump folding structures, the parameters of the three-pump folding structures forming the high-rise structure and the low-rise structure are different, the high-rise structure is sleeved on the top of the low-rise structure,

the high-rise structure comprises high-rise transverse creases and high-rise vertical creases, an included angle between the high-rise creases is formed between the creases, a high-rise folding angle is formed by the high-rise structure when the high-rise structure is folded, similarly, the low-rise structure comprises low-rise transverse creases and low-rise vertical creases, an included angle between the low-rise creases is formed between the creases, a low-rise folding angle is formed by the low-rise structure when the low-rise structure is folded, the length of the high-rise transverse creases is greater than that of the low-rise transverse creases, and the included angle between the high-rise creases is greater than that of the low-rise creases; when the high-layer structure and the low-layer structure are stacked, the direction of the simultaneous protrusion is taken as the positive direction of the Z axis, the high-layer folding angle is positioned above the low-layer folding angle, a height difference is formed between the high-layer folding angle and the low-layer folding angle, and two sides of the high-layer structure are overlapped with two side parts of the low-layer structure; when the honeycomb units are laid, the direction of a connecting line formed by the convex parts is an X axis, and the direction in which the side edges of the honeycomb units are connected is a Y axis, so that a three-dimensional coordinate system is established;

the partition plate is positioned in the X-axis direction of the three-dimensional coordinate system;

as a further preferred aspect of the present invention, two sides of the high-layer structure and two sides of the low-layer structure are partially overlapped to form side edges of the honeycomb unit, wherein an included angle formed by the side edges of the high-layer structure is twice an included angle between the high-layer creases after being unfolded, and an included angle formed by the side edges of the low-layer structure is twice an included angle between the low-layer creases after being unfolded;

as a further preferred aspect of the present invention, the partition is also of a three-pump folding structure, and includes horizontal creases of the partition and vertical creases of the partition, an included angle is formed between the creases of the partition, the shape of the partition is matched with the shape of the side edges of the plurality of honeycomb units, and at this time, the partition is folded to form a folding angle of the partition;

as a further preferable aspect of the present invention, when the high-level structure is stacked on the low-level structure, projections on the coordinate system XY plane coincide;

as a further preferable mode of the present invention, the contact portion of the honeycomb plate and the partition plate is connected by brazing;

as a further preferable mode of the present invention, the contact portion of the upper layer structure and the lower layer structure is connected by brazing;

as a further preferred aspect of the present invention, the honeycomb plate and the partition plate are made of aluminum plates;

in a further preferred embodiment of the present invention, the thickness ratio of the partition plate to the honeycomb plate is 0.1 to 10.

Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. the cellular board provided by the invention comprises a plurality of cellular units, wherein a three-pump folding structure is adopted as a basic structure form, when the external load is borne, the three-pump folding structure enters an unfolded state to consume energy, and each cellular unit comprises a high-layer structure and a low-layer structure, so that the bearing capacity is improved by mutual restraint in the unfolding process;

2. the structure provided by the invention also comprises the partition plate, so that the integrity of the whole structure is improved, and the problems that the three-pump folding structure is low in strength and easy to crush are effectively solved;

3. the honeycomb plate provided by the invention adopts a three-pump folding structure as a basic structure form, the internal structure has high connectivity, the air circulation in the honeycomb plate is promoted, the corrosion phenomenon of the honeycomb plate is effectively reduced, and the service life of the honeycomb material is prolonged;

4. in the cellular board provided by the invention, the parameters of the high-layer structure and the low-layer structure can be changed according to the use requirements, and a larger design space is reserved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic overall structure of a preferred embodiment provided by the present invention;

FIG. 2 is a schematic diagram of a honeycomb panel structure in a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a preferred embodiment of the separator plate according to the present invention;

FIG. 4 is a schematic diagram of a cell structure in a preferred embodiment of the present invention;

fig. 5 a-5 c are a schematic view of the folding-unfolding of the partition board, a schematic view of the folding-unfolding of the high-level structure and a schematic view of the folding-unfolding of the low-level structure in the preferred embodiment of the invention.

In the figure: 1 is the baffle, 11 is the horizontal crease of baffle, 12 is the vertical crease of baffle, 13 is the contained angle between the baffle crease, 14 is the baffle folded angle, 2 is the honeycomb, 3 is high-rise structure, 31 is the horizontal crease of high-rise, 32 is the vertical crease of high-rise, 33 is the contained angle between the high-rise crease, 34 is the high-rise folded angle, 4 is the low level structure, 41 is the horizontal crease of low level, 42 is the vertical crease of low level, 43 is the contained angle between the low level crease, 44 is the low level folded angle.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present application, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

In the prior art, the honeycomb plate is usually in a hexahedral cylindrical structure, and has two obvious disadvantages, one is that the in-plane bearing capacity is far lower than the out-of-plane bearing capacity, so that when the honeycomb plate is subjected to impact load in the in-plane direction, the in-plane damage is prior to the out-of-plane damage, and the bearing performance of the honeycomb plate is greatly reduced; secondly, the inside of the traditional honeycomb plate is of a closed structure, and water vapor condensation generated in the using process cannot be discharged, so that the material is corroded.

Therefore, in order to overcome the defects of low in-plane bearing capacity and short service life of the honeycomb plate in the prior art, the invention provides a honeycomb material based on bidirectional stacking three-pump folding, which mainly adopts the honeycomb plate and a partition plate with a three-pump folding structure, and fig. 1 is a schematic diagram of the overall three-dimensional structure of the honeycomb material, wherein the honeycomb material comprises a plurality of honeycomb plates 2 and a plurality of partition plates 1, and the honeycomb plates are laid between two adjacent partition plates; as shown in fig. 2, the honeycomb panel includes a plurality of stacked honeycomb panel groups, each honeycomb panel group includes a plurality of honeycomb units connected and laid in sequence, in order to better explain the honeycomb units, fig. 4 is provided in the present application, and as can be seen from fig. 4, the honeycomb unit includes a high-rise structure 3 and a low-rise structure 4, both the high-rise structure and the low-rise structure are three-pump folding structures, parameters of the three-pump folding structures forming the two are different, and the high-rise structure is sleeved on the top of the low-rise structure.

Because the high-rise structure and the low-rise structure are both of a three-pump folding type structure, as shown in fig. 5b, the high-rise structure comprises high-rise transverse creases 31 and high-rise vertical creases 32, included angles 33 between the creases are formed, a high-rise folding angle 34 is formed during folding, similarly, as shown in fig. 5c, the low-rise structure comprises low-rise transverse creases 41 and low-rise vertical creases 42, included angles 43 between the creases are formed, and a low-rise folding angle 44 is formed during folding, because the high-rise structure is sleeved on the low-rise structure, namely the high-rise folding angle is positioned above the low-rise folding angle, and meanwhile, in order to ensure that two sides of the high-rise structure are overlapped with two side parts of the low-rise structure, the length of the high-rise transverse creases is larger than that of the low-rise transverse creases, and the included angle between the high-rise creases is larger than that of the low-rise folding angle. The contact part of the honeycomb plate and the partition plate and the contact part of the high-rise structure and the low-rise structure are connected by brazing.

When a plurality of honeycomb units are laid to form the structure in fig. 1, for convenience of description, a three-dimensional coordinate system is established by taking the direction of simultaneous protrusion when a high-level structure and a low-level structure are stacked as the positive direction of a Z axis, the direction of a connecting line formed by the protrusion parts when the plurality of honeycomb units are laid as an X axis, and the direction in which the side edges of the plurality of honeycomb units are connected as a Y axis; that is, in the laid structure, the bottom surface of the upper structure and the bottom surface of the lower structure are overlapped with each other, that is, when the upper structure is laid on the lower structure, the projections on the XY plane of the coordinate system are overlapped, and the honeycomb unit is periodically expanded in the X and Z directions of the coordinate system. By adopting the three-pump folding structure as the basic structure form of the honeycomb plate, when the out-of-plane load is borne, the three-pump folding structure in the honeycomb plate is utilized to enter the unfolding state for energy consumption, and the deformation of two structures (namely a high-layer structure and a low-layer structure) with different parameters in the honeycomb plate is inconsistent in the unfolding process, so that the structures are mutually constrained, and the bearing capacity is improved.

After the honeycomb plate is manufactured, the three-pump folding structure forming the honeycomb unit is low in strength and easy to crush, so that the structure of the present application further includes a partition plate, and the three-pump folding structure (as shown in fig. 3) is also adopted, in a three-dimensional coordinate system, the partition plate is located in the X-axis direction of the three-dimensional coordinate system, and the height of the partition plate in the Z direction is determined due to the height difference between the high-level structure and the low-level structure.

As shown in fig. 5a, the separator comprises transverse separator folds 11 and vertical separator folds 12, and the folds form an included angle 13 between the separator folds; returning to the high-rise structure and the low-rise structure, the two sides of the high-rise structure and the two sides of the low-rise structure are partially overlapped to form the side edges of the honeycomb units, the left side of fig. 5b shows a schematic shape diagram of the high-rise structure when the high-rise structure is unfolded, an included angle formed by the side edges of the high-rise structure is twice as large as an included angle formed by the high-rise creases after the high-rise structure is unfolded, and similarly, an included angle formed by the side edges of the low-rise structure is twice as large as an included angle formed by the low-rise creases after the low-rise structure is unfolded; the shape of the partition matches the shape of the sides of the plurality of honeycomb cells, and the partition is folded to form partition folding corners 14.

The existence of the partition plate greatly improves the integrity of the honeycomb material, when the honeycomb material is subjected to an out-of-plane load, the partition plate and the honeycomb plate enter a folded state together to consume energy, and the compression-resistant bearing capacity of the material is enhanced; when bearing the load in the plane, the incoordination of the high-rise structure and the low-rise structure of the honeycomb panel during deformation is also utilized to improve the rigidity in the plane of the honeycomb panel, and the partition board can consume a part of capacity through deformation while restraining the deformation of the honeycomb panel, so that the in-plane shear resistance is improved.

After the honeycomb plate and the partition plate form the structure shown in figure 1, the air circulation in the honeycomb plate is promoted by the high connectivity in the honeycomb plate, so that the corrosion problem caused by water vapor retention of the honeycomb plate can be reduced, and the service life of the material is prolonged.

Next, the applicant has given a preferred embodiment relating to the present application, the length of the transverse folds of the partition is 10mm, the length of the vertical folds of the partition is 3.9mm, the included angle between the folds of the partition is 77 °, and the folding angle of the partition is 120 °; the length of the high-rise transverse crease is 21.2mm, the length of the high-rise vertical crease is 10mm, the included angle between the high-rise creases is 69 degrees, and the high-rise folding angle is 90 degrees; the length of the transverse crease of the lower layer is 16.8mm, the vertical crease of the lower layer is 10mm, the included angle between the creases of the lower layer is 63 degrees, and the folding angle of the lower layer is 127 degrees; the height difference between the high-layer structure and the low-layer structure is 7.5mm, namely the height of the partition board in the Z direction is 7.5 mm; the thickness of the partition board and the thickness of the honeycomb plate are both 0.5 mm; after testing, the preferred embodiment has been found to have significantly improved in-plane stiffness as well as in-plane shear resistance.

In conclusion, the rigidity in all directions can be adjusted by adjusting the parameters of the honeycomb plate and the partition plate according to different energy consumption design requirements, and the honeycomb plate has good in-plane rigidity, in-plane shear resistance, connectivity and energy consumption capacity.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" as used herein is intended to include both the individual components or both.

The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.