CN114055859A - Honeycomb structure easy to bend and capable of adapting to different curved surfaces - Google Patents
Honeycomb structure easy to bend and capable of adapting to different curved surfaces Download PDFInfo
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- CN114055859A CN114055859A CN202111399333.2A CN202111399333A CN114055859A CN 114055859 A CN114055859 A CN 114055859A CN 202111399333 A CN202111399333 A CN 202111399333A CN 114055859 A CN114055859 A CN 114055859A
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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
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
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Abstract
The invention relates to a honeycomb structure which is easy to bend and can adapt to different curved surfaces, and aims to solve the problems that in the engineering process of preparing a curved surface honeycomb sandwich structure, a planar honeycomb core material can be directly bent to be attached to the surface of a curved surface, the honeycomb structure made of partial materials cannot meet the engineering requirement of curved surface attachment due to large in-plane rigidity, and a common hexagonal honeycomb structure can generate saddle-shaped deformation in the bending process and is not beneficial to the attachment of the curved surface, the honeycomb of the invention is formed by staggered arrangement of a plurality of honeycomb units, the side walls of the honeycomb units are arc curved walls or broken line walls, the range of curvature angles of the arc curved walls is (0 degrees and 90 degrees), the honeycomb units are polygonal or concave polygons, the honeycomb units comprise concave hexagonal honeycombs, double-arrow-headed honeycombs, star-shaped honeycombs, chiral honeycombs and reverse honeycombs, and can be suitable for honeycombs made of different materials, the bending is easy in the production process, and the bending can be carried out into a desired curved surface form through design.
Description
Technical Field
The invention relates to the field of honeycomb structures, in particular to a honeycomb structure which is easy to bend and can adapt to different curved surfaces.
Background
In engineering, when a curved surface honeycomb sandwich structure is prepared, the planar honeycomb core material can be directly bent to be attached to the surface of a curved surface. On one hand, the honeycomb structure made of partial materials is difficult to meet the engineering requirement of curved surface attachment due to large in-plane rigidity, such as composite material honeycomb, high polymer material honeycomb, stainless steel honeycomb and the like; on the other hand, the common hexagonal honeycomb structure can generate saddle-shaped deformation in the bending process, the attachment to a curved surface is not facilitated, and forced shaping can enable the honeycomb wall to generate larger internal stress, so that the structural bearing performance and the profile precision are reduced.
Traditional aluminum alloy honeycomb, aramid paper honeycomb and the like can be directly bent or attached to a curved surface structure due to the fact that the honeycomb wall surface is thin and the rigidity of base materials is small. However, the traditional hexagonal bending can generate saddle-shaped deformation, and the final manufactured structure precision is influenced. And many other materials, such as fiber reinforced resin matrix composite, stainless steel, polymer, etc., have large in-plane rigidity due to large parent material rigidity or the manufacturing process can not meet the requirement of thin-wall honeycomb preparation, so that the honeycomb structure is not easy to be directly bent, and the saddle-shaped deformation effect generated after bending is very obvious, and the honeycomb structure can not be directly bent or attached to a curved surface.
Disclosure of Invention
The invention discloses the following purposes: the invention provides a honeycomb structure which is easy to bend and can adapt to different curved surfaces, and aims to solve the problems that in the process of preparing a curved surface honeycomb sandwich structure in engineering, a planar honeycomb core material can be directly bent to be attached to the surface of a curved surface, a part of honeycomb structure made of materials is difficult to meet the engineering requirement of curved surface attachment due to large in-plane rigidity, a common hexagonal honeycomb structure can generate saddle-shaped deformation in the bending process, the attachment to the curved surface is not facilitated, forced shaping can generate large internal stress on a honeycomb wall, and therefore the bearing performance and the profile accuracy of the structure are reduced.
The purpose of the invention is realized as follows: the utility model provides an easy crooked honeycomb structure that just can adapt to different curved surfaces, honeycomb structure comprises a plurality of honeycomb unit staggered arrangement, the lateral wall of honeycomb unit is circular arc bent wall or broken line wall.
Further, the range of the curvature angle of the circular arc curved wall is (0 °,90 ° ].
Still further, the basic design shape of the honeycomb unit is a polygon or a concave polygon.
Further, the honeycomb unit comprises concave hexagonal honeycomb, double-arrow honeycomb, star honeycomb, chiral honeycomb and anti-hand honeycomb.
Still further, the two-dimensional structure form of the broken line wall is one or a combination of a plurality of arcs with different radians, parabolas, sine curves, cosine curves, double-arc lines, polynomial function lines, broken lines and multi-broken lines.
Further, the honeycomb unit is made of a fiber reinforced composite material, a polymer material or a stainless steel material.
Still further, the side wall of the honeycomb unit also comprises a fold line-circular arc mixed lapping line structure.
Further, the single cell of the hexagonal single-curved-wall honeycomb takes a hexagon as a reference and comprises three outward convex sides and three inward concave sides, and the outward convex sides and the inward concave sides are arranged in a staggered mode.
The unit cell of the hexagonal double-curved-wall honeycomb takes a hexagon as a reference, each side comprises an outer convex part and an inner concave part, and the outer convex part of each side and the inner concave part of the adjacent side are arranged in a staggered mode.
And furthermore, the convex side of the single cell of the hexagonal single-curved-wall honeycomb, the concave side of the single cell of the single-curved-wall honeycomb, the concave part of the hexagonal double-curved-wall honeycomb and the concave part of the hexagonal double-curved-wall honeycomb are all arc-shaped.
Further, the jellyfish-shaped honeycomb is formed by converting straight walls of an inwards concave hexagonal honeycomb into curved walls;
the shape of the goldfish-shaped honeycomb is that the straight wall of the double-arrow honeycomb is converted into a curved wall;
the shape of the starlike honeycomb is that the straight wall of the starlike honeycomb is converted into a curved wall;
the shape of the octopus-shaped honeycomb is that the straight wall of the chiral honeycomb is converted into the curved wall;
the shape of the bat ray type honeycomb is that the straight wall of the backhoe-shaped honeycomb is converted into the curved wall.
Has the advantages that:
1. the invention provides a novel honeycomb structure form aiming at the problem, which can be suitable for honeycombs made of different materials, is easy to bend in the production process, and can be bent into a desired curved surface form by design.
2. The invention is suitable for honeycombs made of fiber reinforced composite materials, high polymer materials, stainless steel and the like;
3. the honeycomb wall is changed from a straight wall into a curved wall/broken line, so that the compression rigidity in the honeycomb surface is reduced and the deformation capacity is improved;
4. the basic configuration of the selected cellular cell of the present invention is a typical configuration with negative poisson's ratio performance, including but not limited to: concave hexagonal honeycomb, double arrow honeycomb, star honeycomb, chiral honeycomb, anti-chiral honeycomb, etc. Preferably, it is a concave hexagonal honeycomb.
5. The invention solves the problem that the deformation of a common honeycomb core material is not consistent when the common honeycomb core material is bent into a curved surface, and provides a novel honeycomb design structure. The invention firstly changes the straight wall of the honeycomb into a curved wall/broken line wall, and the two-dimensional structural form of the wall surface comprises but is not limited to arcs with different radians, parabolas, sine/cosine curves, double-arc lines, polynomial function lines, broken lines and multi-broken lines. The design can reduce the in-plane rigidity of the honeycomb structure, so that the material is easy to bend and form, the residual stress in the wall surface after bending is small, and the retention degree of the shape precision of the structure is higher;
secondly, the honeycomb core material is adopted as a design reference, wherein the honeycomb structure is a polygon, a concave polygon and the like, optimally, the reference structure is a hexagon, and the in-plane Poisson ratio of the structure is adjusted by adjusting the inner concave angle, so that the honeycomb core material generates deformation with same-direction curvature when the honeycomb core material is bent out of a bearing surface;
finally, the two designs are combined to form the honeycomb structure which is easy to bend and suitable for forming different curved surfaces. The honeycomb structure designed by the invention can effectively improve the curved surface adaptability of the honeycomb core to complex curved surfaces, and is suitable for preparing curved surface structures such as satellite antenna reflecting surfaces, radar antenna covers, airplane cabin sections and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below 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 creative efforts.
FIG. 1 is a schematic diagram of various structures of the honeycomb structure of the present invention that are easily bendable and can accommodate different curved surfaces;
a is a hexagonal single-curved-wall honeycomb I (the section of the curved wall of the honeycomb wall is arc-shaped, and the length of the arc is one sixth of the circle);
b is a hexagonal single-curved-wall honeycomb I (the section of the curved wall of the honeycomb wall is arc-shaped, and the length of the arc is one third of that of the circle);
c is a hexagonal single-curved-wall honeycomb I (the section of the curved wall of the honeycomb wall is arc-shaped, and the length of the arc is one half of the circle);
d is a hexagonal double-curved-wall honeycomb I (the section of the curved wall is two arcs which have the same shape, are connected at fixed points and have opposite directions, and the length of each arc is one quarter of a circle);
e is a hexagonal double-curved-wall honeycomb II (the section of the curved wall is two arcs which have the same shape, are connected at fixed points and have opposite directions, and the length of each arc is one half of that of a circle);
f is an inner concave hexagonal honeycomb;
g is a double-arrow honeycomb;
h is a star-shaped honeycomb;
i is a chiral honeycomb;
j is an anti-chiral honeycomb;
k is a jellyfish type honeycomb;
l is goldfish-shaped honeycomb;
m is a starfish honeycomb;
n is an octopus-shaped honeycomb;
o is a bat ray type honeycomb;
A-E are curved wall designs: a fully deformable honeycomb; F-J is a negative Poisson ratio honeycomb: homodromous curved surface honeycomb; K-O is the design of the self-adaptive curved surface: the curved surface honeycomb can be bent and adapted;
FIG. 2 is a first view of the honeycomb structure of the present invention in a curved state;
FIG. 3 is a second view of the honeycomb structure of the present invention in a curved state;
FIG. 4 is an enlarged view of the adaptive surface design K map of the present invention;
FIG. 5 is a third view of the honeycomb structure of the present invention in a curved state;
FIG. 6 is an enlarged view of the curved wall design C of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6;
FIG. 8 is an enlarged view of a first hexagonal double curved wall honeycomb;
FIG. 9 is an enlarged view of a second hexagonal double curved wall honeycomb;
FIG. 10 is a curved-wall honeycomb state diagram; fig. 10-1 is a curved-wall honeycomb state diagram when v > 0, fig. 10-2 is a curved-wall honeycomb state diagram when v is 0, fig. 10-3 is a curved-wall honeycomb state diagram when v < 0, and v denotes a poisson ratio.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 invention 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.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The first embodiment is as follows: the utility model provides an easy crooked honeycomb structure that just can adapt to different curved surfaces, honeycomb structure comprises a plurality of honeycomb unit staggered arrangement, the lateral wall of honeycomb unit is circular arc bent wall or broken line wall.
The second embodiment is as follows: a honeycomb structure which is easily bent and can be adapted to different curved surfaces, the range of the curvature angle of the circular arc curved wall is (0 degrees, 90 degrees).
Other embodiments are the same as the first embodiment.
The third concrete implementation mode: a honeycomb structure which is easy to bend and can adapt to different curved surfaces is characterized in that the basic design shape of the honeycomb unit is a polygon or a concave polygon.
Other embodiments are the same as the first embodiment.
The fourth concrete implementation mode: the honeycomb structure is easy to bend and can adapt to different curved surfaces, and the honeycomb units comprise concave hexagonal honeycombs, double-arrow honeycombs, star-shaped honeycombs, chiral honeycombs and anti-chiral honeycombs.
Other embodiments are the same as the first embodiment.
The fifth concrete implementation mode: the two-dimensional structure of the broken line wall is in the form of one or a combination of a plurality of arcs, parabolas, sine curves, cosine curves, double-arc lines, polynomial function lines, broken lines and multiple broken lines with different radians.
Other embodiments are the same as the first embodiment.
The sixth specific implementation mode: a honeycomb structure which is easy to bend and can adapt to different curved surfaces is characterized in that honeycomb units are made of fiber reinforced composite materials, high polymer materials or stainless steel materials.
Other embodiments are the same as the first embodiment.
The seventh embodiment: the side wall of the honeycomb unit also comprises a broken line-circular arc mixed overlapping line structure.
Other embodiments are the same as the first embodiment.
The specific implementation mode is eight: the single cell of the hexagonal single-curved-wall honeycomb takes a hexagon as a reference and comprises three outward convex sides and three inward concave sides, and the outward convex sides and the inward concave sides are arranged in a staggered mode.
The unit cell of the hexagonal double-curved-wall honeycomb takes a hexagon as a reference, each side comprises an outer convex part and an inner concave part, and the outer convex part of each side and the inner concave part of the adjacent side are arranged in a staggered mode.
The other embodiments are the same as the fourth embodiment.
The specific implementation method nine: the single cell convex edge of the hexagonal single-curved-wall honeycomb, the single cell concave edge of the single-curved-wall honeycomb, the concave part of the hexagonal double-curved-wall honeycomb and the concave part of the hexagonal double-curved-wall honeycomb are all arc-shaped.
The other embodiments are the same as the eighth embodiment.
The detailed implementation mode is ten: the jellyfish-shaped honeycomb is formed by converting straight walls of an inwards concave hexagonal honeycomb into curved walls;
the shape of the goldfish-shaped honeycomb is that the straight wall of the double-arrow honeycomb is converted into a curved wall;
the shape of the starlike honeycomb is that the straight wall of the starlike honeycomb is converted into a curved wall;
the shape of the octopus-shaped honeycomb is that the straight wall of the chiral honeycomb is converted into the curved wall;
the shape of the bat ray type honeycomb is that the straight wall of the backhoe-shaped honeycomb is converted into the curved wall.
In the present embodiment: the jellyfish-type honeycomb carries out curved wall design on the inward concave hexagonal honeycomb, converts a straight wall into a curved wall, preferably an arc-shaped curved wall, and changes the arc angle within the range of 1-60 degrees;
the goldfish-shaped honeycomb is subjected to curved wall design, wherein a straight wall is converted into a curved wall, preferably an arc-shaped curved wall, and the variation range of an arc angle is 1-45 degrees;
the starfish-shaped honeycomb is subjected to curved wall design, wherein a straight wall is converted into a curved wall, preferably an arc-shaped curved wall, and the variation range of an arc angle is 1-60 degrees;
the octopus-shaped honeycomb is designed into a curved wall by performing curved wall design on the chiral honeycomb, wherein a straight wall is converted into a curved wall, preferably an arc-shaped curved wall, and the variation range of an arc angle is 1-60 degrees;
the bat ray type honeycomb is characterized in that the curved wall design is carried out on the backhoe type honeycomb, a straight wall is converted into a curved wall, preferably an arc-shaped curved wall, and the variation range of an arc angle is 1-60 degrees;
the other embodiments are the same as the fourth embodiment.
The present embodiment is described with reference to the accompanying drawings 1-10:
the utility model provides an easy crooked honeycomb structure that just can adapt to different curved surfaces, the honeycomb comprises a plurality of honeycomb unit staggered arrangement, the lateral wall of honeycomb unit is circular arc curved wall or broken line wall. The honeycomb structure is easy to bend and can adapt to different curved surfaces, the honeycomb units are made of fiber reinforced composite materials, high polymer materials or stainless steel materials, the side walls of the honeycomb units further comprise a broken line-arc mixed overlapping line structure, and the honeycomb comprises at least one honeycomb unit.
The invention provides a novel honeycomb design structure for solving the problem that deformation generated when a common honeycomb core material is bent into a curved surface is not consistent. The invention firstly changes the straight wall of the honeycomb into a curved wall/broken line wall, and the two-dimensional structural form of the wall surface comprises but is not limited to arcs with different radians, parabolas, sine/cosine curves, double-arc lines, polynomial function lines, broken lines and multi-broken lines. The design can reduce the in-plane rigidity of the honeycomb structure, so that the material is easy to bend and form, the residual stress in the wall surface after bending is small, and the retention degree of the shape precision of the structure is higher;
secondly, the honeycomb core material is adopted as a design reference, wherein the honeycomb structure is a polygon, a concave polygon and the like, optimally, the reference structure is a hexagon, and the in-plane Poisson ratio of the structure is adjusted by adjusting the inner concave angle, so that the honeycomb core material generates deformation with same-direction curvature when the honeycomb core material is bent out of a bearing surface;
finally, the two designs are combined to form the honeycomb structure which is easy to bend and suitable for forming different curved surfaces. The honeycomb structure designed by the invention can effectively improve the curved surface adaptability of the honeycomb core to complex curved surfaces, and is suitable for preparing curved surface structures such as satellite antenna reflecting surfaces, radar antenna covers, airplane cabin sections and the like.
Table 1 is a table of parameters of mechanical properties in a plane of a carbon fiber composite material curved honeycomb (phi is 45 deg.) based on an inward concave hexagonal configuration (theta is 120 deg.), klIs the ratio of the two chord lengths, k, in a cellular celll＝l2/l1；
The theta is the included angle of the honeycomb walls,
is the arc angle of the curved wall, /)2Double wall thickness honeycomb wall chord length1Single wall thickness honeycomb wall chord length;
table 2 is a table of mechanical property parameters in the plane of a carbon fiber composite curved-wall honeycomb based on a hexagonal configuration (θ ═ 60 °).
The F-H designation in FIG. 1 is from the book "lightweight Honeycomb mechanics" Wangzhong Steel works;
I. j naming is from the article "study of kinetic response properties of chiral honeycombs of the six ligaments";
k is a jellyfish type honeycomb; (the concave hexagonal honeycomb is designed into a curved wall, wherein a straight wall is converted into a curved wall, preferably an arc-shaped curved wall, and the variation range of an arc angle is 1-60 degrees.)
L is goldfish-shaped honeycomb; (the double-arrow honeycomb is designed into a curved wall, wherein a straight wall is converted into a curved wall, preferably a circular arc-shaped curved wall, and the variation range of the circular arc angle is 1-45 degrees.)
M is a starfish honeycomb; (the star-shaped honeycomb is designed into a curved wall, wherein a straight wall is converted into a curved wall, preferably a circular arc-shaped curved wall, and the variation range of the circular arc angle is 1-60 degrees.)
N is an octopus-shaped honeycomb; (design of hand honeycomb into curved wall, converting straight wall into curved wall, preferably circular arc curved wall, and changing range of circular arc angle is 1-60 degree.)
O is a bat ray type honeycomb; (reverse hand honeycomb is designed into curved wall, wherein straight wall is converted into curved wall, preferably circular arc curved wall, and the variation range of circular arc angle is 1-60 degree.)
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an easy crooked honeycomb structure that just can adapt to different curved surfaces which characterized in that: the honeycomb structure is formed by a plurality of honeycomb units in staggered arrangement, and the side walls of the honeycomb units are arc curved walls or broken line walls.
2. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 1, wherein: the range of the curvature angle of the arc curved wall is (0 °,90 °).
3. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 1, wherein: the basic design shape of the honeycomb unit is a polygon or a concave polygon.
4. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 1, wherein: the honeycomb units comprise hexagonal single-curved-wall honeycombs, hexagonal double-curved-wall honeycombs, concave hexagonal honeycombs, double-arrow-head honeycombs, star honeycombs, chiral honeycombs, backhand honeycombs, jellyfish honeycombs, goldfish honeycombs, starfish honeycombs, octopus honeycombs and bat honeycombs.
5. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 1, wherein: the two-dimensional structure form of the broken line wall is one or a combination of a plurality of arcs, parabolas, sine curves, cosine curves, double-arc lines, polynomial function lines, broken lines and multi-broken lines with different radians.
6. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 1, wherein: the honeycomb unit is made of fiber reinforced composite materials, high polymer materials or stainless steel materials.
7. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 1, wherein: the side wall of the honeycomb unit also comprises a fold line-circular arc mixed lapping line structure.
8. A honeycomb structure that is easily bendable and can accommodate different curved surfaces according to claim 4, wherein: the single cell of the hexagonal single-curved-wall honeycomb takes a hexagon as a reference and comprises three outward convex sides and three inward concave sides, and the outward convex sides and the inward concave sides are arranged in a staggered mode.
The unit cell of the hexagonal double-curved-wall honeycomb takes a hexagon as a reference, each side comprises an outer convex part and an inner concave part, and the outer convex part of each side and the inner concave part of the adjacent side are arranged in a staggered mode.
9. A honeycomb structure that is easily bendable and can accommodate different curved surfaces as claimed in claim 8, wherein: the single cell convex edge of the hexagonal single-curved-wall honeycomb, the single cell concave edge of the single-curved-wall honeycomb, the concave part of the hexagonal double-curved-wall honeycomb and the concave part of the hexagonal double-curved-wall honeycomb are all arc-shaped.
10. A honeycomb structure that is easily bendable and can accommodate different curved surfaces according to claim 4, wherein: the jellyfish-shaped honeycomb is formed by converting straight walls of an inwards concave hexagonal honeycomb into curved walls;
the shape of the goldfish-shaped honeycomb is that the straight wall of the double-arrow honeycomb is converted into a curved wall;
the shape of the starlike honeycomb is that the straight wall of the starlike honeycomb is converted into a curved wall;
the shape of the octopus-shaped honeycomb is that the straight wall of the chiral honeycomb is converted into the curved wall;
the shape of the bat ray type honeycomb is that the straight wall of the backhoe-shaped honeycomb is converted into the curved wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399333.2A CN114055859A (en) | 2021-11-19 | 2021-11-19 | Honeycomb structure easy to bend and capable of adapting to different curved surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111399333.2A CN114055859A (en) | 2021-11-19 | 2021-11-19 | Honeycomb structure easy to bend and capable of adapting to different curved surfaces |
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| CN116587679A (en) * | 2023-06-13 | 2023-08-15 | 株洲时代橡塑元件开发有限责任公司 | Convex honeycomb core structure and preparation method thereof |
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