Paper folding dot matrix unit structure for bearing and energy absorption and overlapping structure

Abstract

The paper folding dot matrix unit structure comprises a basic paper folding curved surface structure and an overlapped paper folding curved surface structure, the basic paper folding curved surface structure comprises an upper local platform and a lower local platform, arc-shaped folding marks on the left side and the right side of the upper local platform are connected with upper arc-shaped panels, the upper arc-shaped panels on the two sides face downwards and are in a flaring shape, and the lower arc-shaped panels are in a flaring shape. The lower arc-shaped plates on the two sides face downwards and are in a necking shape, and the lower ends of the lower arc-shaped plates are connected to the arc-shaped creases on the left side and the right side of the lower local platform correspondingly; the overlapped paper folding curved surface structure comprises a middle local platform, the middle local platform is arranged between the upper local platform and the lower local platform, arc-shaped creases on the left side and the right side are connected with first arc-shaped panels arranged upwards and third arc-shaped panels arranged downwards, the first arc-shaped panels penetrate through and are fused with the upper arc-shaped panels on the same sides, and the third arc-shaped panels penetrate through and are fused with the lower arc-shaped panels on the same sides. The ends, away from the middle local platform, of the first cambered plates on the two sides are connected with second cambered plates which are arranged upwards in a necking-down mode respectively, and the third cambered plates penetrate through and are fused with the lower cambered plate. The problem of stress concentration is solved.

Description

Technical Field

[0001] This invention relates to the field of origami engineering technology, specifically to an origami lattice unit structure and its stacking structure for bearing and absorbing energy. Background Technology

[0002] Origami structures, with their unique adjustable deformation characteristics, have broad application prospects in fields such as adjustable electromagnetic absorbers, flexible robotic arms, and deployable space antennas. In the aerospace field, satellite load-bearing structures not only need to possess high specific strength and lightweight characteristics, but also need to withstand severe vibration and impact loads during launch, thus placing stringent requirements on the structure's energy absorption capacity and load-bearing stability. Miura origami is a classic rigid origami configuration composed of a periodically repeating array of units. However, traditional Miura origami structures consist of flat plates and straight creases. During load-bearing, severe stress concentration often occurs at the vertices where the four creases intersect, making the structure prone to localized failure.

[0003] In existing technologies, although there are "curved Miura origami" designs that use smooth curved surfaces to replace flat plates in order to alleviate stress concentration, the problem of stress concentration caused by geometric abrupt changes at the intersection of creases has not been fundamentally solved.

[0004] Therefore, there is an urgent need for a lattice unit structure and overlapping structure for bearing and absorbing energy in origami to solve the problem of severe stress concentration at the intersection of creases in existing origami structures. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a paper lattice unit structure and overlapping structure for bearing and absorbing energy, thereby solving the problem of severe stress concentration at the intersection of creases in existing paper fold structures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A paper lattice unit structure for carrying and absorbing energy is characterized by comprising a basic paper lattice structure and a superimposed paper lattice structure. The basic paper lattice structure includes an arc-shaped upper partial platform, an arc-shaped lower partial platform, two upper arc panels, and two lower arc panels. An upper arc panel is connected to the arc-shaped folds on the left and right sides of the upper partial platform. The upper arc panels on both sides are flared downwards and connected to a lower arc panel at their lower ends. The lower arc panels on both sides are constricted downwards and connected to the arc-shaped folds on the left and right sides of the lower partial platform at their lower ends. The superimposed origami curved surface structure includes an arc-shaped middle partial platform, two first arc panels, two second arc panels, and two third arc panels. The middle partial platform is arranged parallel between the upper and lower partial platforms, and the arc-shaped creases on the left and right sides are respectively connected to the first arc panels that are flared upwards and the third arc panels that are flared downwards. The first arc panels pass through and merge with the upper arc panel on the same side, and the ends of the two first arc panels on the side of the upper arc panel away from the middle partial platform are respectively connected to the second arc panels that are flared upwards. The third arc panels pass through and merge with the lower arc panel on the same side.

[0008] To optimize the above technical solution, the specific measures also include: Furthermore, the middle local platform is vertically aligned with the upper and lower local platforms.

[0009] Furthermore, the vertical height distance between the top of the second arc panel and the bottom of the third arc panel on the same side is... The vertical height distance between the top of the second arc panel and the bottom of the upper arc panel is The vertical height distance between the bottom of the upper arc panel and the bottom of the third arc panel is , ,and Not equal to .

[0010] Furthermore, the curvature parameter b of the upper local platform, lower local platform, upper arc panel, lower arc panel, middle local platform, first arc panel, second arc panel, and third arc panel are all the same.

[0011] Furthermore, the top of the second arc panel is flush with the upper partial platform, the bottom of the third arc panel is flush with the lower partial platform, and the tilt direction of the second arc panel and the third arc panel on the same side is consistent.

[0012] Furthermore, the front and rear ends of the upper local platform, lower local platform, upper arc panel, lower arc panel, middle local platform, first arc panel, second arc panel and third arc panel are all vertically aligned.

[0013] Furthermore, the second crease at the connection between the first and second arc panels on the same side is vertically aligned with the first crease at the connection between the upper and lower arc panels on the same side.

[0014] Furthermore, a composite structure, employing the aforementioned origami dot matrix unit structure for carrying energy absorption, is characterized by: comprising an array of unit structures, wherein the upper local platform of each unit structure serves as the lower local platform of another unit structure located above it, and the top of the second arc panel of the unit structure serves to connect with the bottom of the third arc panel of the other unit structure located above it; the lower local platform of the unit structure serves as the upper local platform of another unit structure located below it, and the bottom of the third arc panel of the unit structure serves to connect with the top of the second arc panel of the other unit structure located below it.

[0015] Furthermore, a composite structure, employing the aforementioned origami dot matrix unit structure for carrying energy absorption, is characterized by: including an array of unit structures, wherein the front end of each set of unit structures is used to connect to the rear end of another unit structure located on the front side, and the rear end of the set of unit structures is used to connect to the front end of another unit structure located on the rear side.

[0016] Furthermore, a composite structure, employing the aforementioned origami dot matrix unit structure for carrying energy absorption, is characterized by: comprising an array of unit structures, wherein the second crease and the first crease on the left side of each unit structure are respectively connected to the second crease and the first crease on the right side of another unit structure located on the left side, and the second crease and the first crease on the right side of the same unit structure are respectively connected to the second crease and the first crease on the left side of another unit structure located on the right side.

[0017] The beneficial effects of this invention are: This invention transforms the four-sided intersection node, which is prone to stress concentration, into two separate three-sided intersection nodes by designing the upper, lower, and middle local platforms in the basic origami curved surface structure and the superimposed origami curved surface structure. This effectively reduces the peak stress at the node and improves the stress state of the structure. The invention also significantly increases the length of the plastic hinge line and the energy dissipation path through the staggered design, thereby significantly improving the stiffness, strength, and energy absorption characteristics of the structure.

[0018] The staggered superposition design of this invention significantly increases the crease density per unit volume without changing the basic topological logic, forming a multi-path stress transfer mechanism. Large curved surfaces are broken into multiple small curved surfaces, reducing the risk of instability and improving specific stiffness and specific energy absorption. Attached Figure Description

[0019] Figure 1 This is a schematic diagram A of the overall structure of a paper lattice unit structure for carrying energy absorption proposed in this invention; Figure 2 This is a schematic diagram B of the overall structure of an origami lattice unit structure for carrying and absorbing energy proposed in this invention; Figure 3This is a schematic diagram (C) of the overall structure of an origami lattice unit structure for carrying and absorbing energy proposed in this invention; Figure 4 D is a schematic diagram of the overall structure of an origami lattice unit structure for carrying energy absorption proposed in this invention; Figure 5 This is a front view of the overall structure of an origami dot matrix unit structure for carrying and absorbing energy proposed in this invention; Figure 6 E is a schematic diagram of the overall structure of an origami lattice unit structure for carrying energy absorption proposed in this invention; Figure 7 This is a partial connection diagram of an overlay structure proposed in this invention; Figure 8 This is a schematic diagram of a connection of a composite structure proposed in this invention; Figure 9 This is a comparison of the quasi-static compressive force-displacement curves of the composite origami structure and the original origami structure.

[0020] Reference numerals: 1. Basic origami curved surface structure; 11. Upper partial platform; 12. Upper arc panel; 13. Lower arc panel; 14. Lower partial platform; 2. Superimposed origami curved surface structure; 21. Middle partial platform; 22. First arc panel; 23. Second arc panel; 24. Third arc panel; 3. First crease; 4. Second crease. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and attached Figure 6 As shown, an embodiment of the present invention provides a paper lattice unit structure for carrying and absorbing energy, including a basic paper lattice structure 1 and a superimposed paper lattice structure 2. The basic paper lattice structure 1 includes an arc-shaped upper partial platform 11, an arc-shaped lower partial platform 14, two upper arc panels 12 and two lower arc panels 13. An upper arc panel 12 is connected to the arc-shaped folds on the left and right sides of the upper partial platform 11, and the upper arc panels 12 on both sides are flared downwards and connected to a lower arc panel 13 at their lower ends. The lower arc panels 13 on both sides are constricted downwards and connected to the arc-shaped folds on the left and right sides of the lower partial platform 14 at their lower ends. The superimposed origami curved surface structure 2 includes an arc-shaped central partial platform 21, two first arc panels 22, two second arc panels 23, and two third arc panels 24. The central partial platform 21 is arranged parallel between the upper partial platform 11 and the lower partial platform 14. The arc-shaped creases on the left and right sides of the central partial platform 21 are respectively connected to the first arc panels 22 which are arranged upward and flared, and the third arc panels 24 which are arranged downward and flared. The first arc panels 22 penetrate and merge with the upper arc panel 12 on the same side. The ends of the two first arc panels 22 located on the side of the upper arc panel 12 away from the central partial platform 21 are respectively connected to the second arc panels 23 which are arranged upward and constricted. The third arc panels 24 penetrate and merge with the lower arc panel 13 on the same side.

[0023] This invention, through the design of the upper local platform 11, lower local platform 14, and middle local platform 21 in the basic origami curved surface structure 1 and the superimposed origami curved surface structure 2, transforms the four-sided intersection node, which is prone to stress concentration, into two separate three-sided intersection nodes, thereby effectively reducing the peak stress at the node and improving the stress state of the structure. This invention also significantly increases the length of the plastic hinge line and the energy dissipation path through the staggered design, achieving a significant improvement in the structural stiffness, strength, and energy absorption characteristics.

[0024] The unit structure of this invention can be constructed based on the asymmetric mirror surface Miura configuration, featuring a double-layered, staggered superposition structure. Specifically, the superimposed origami surface structure 2 has a spatial phase deviation distance Δ relative to the basic origami surface structure 1. h This allows the two curved surfaces to interpenetrate and merge, forming a solid in the overlapping area. In addition to the original main creases of the basic origami curved surface structure 1 and the superimposed origami curved surface structure 2, secondary creases are formed at the intersections, thus creating a multi-layered crease network containing both main and secondary creases. Figure 1 The main crease is at the center dot, and the secondary crease is at the rectangular frame. The design of the upper local platform 11, the lower local platform 14, and the middle local platform 21 creates a platform area with a preset width between the two creases, effectively alleviating stress concentration.

[0025] In one specific embodiment based on the above, the middle local platform 21 is vertically aligned with the upper local platform 11 and the lower local platform 14. In this embodiment, the vertical alignment of the middle local platform 21, the upper local platform 11, and the lower local platform 14 ensures the stability of the structure. In this solution, the middle local platform 21 can be located between the upper local platform 11 and the lower local platform 14.

[0026] In another specific embodiment based on the above, the vertical height distance between the top of the second arc panel 23 and the bottom of the third arc panel 24 on the same side is [missing information]. The vertical height distance between the top of the second arc panel 23 and the bottom of the upper arc panel 12 is... The vertical height distance between the bottom of the upper arc panel 12 and the bottom of the third arc panel 24 is , ,and Not equal to In this embodiment, the unit structure adopts an asymmetrical design, which can be adjusted... and The deformation mode of the structure is controlled by the proportion.

[0027] In another specific embodiment based on the above, the curvature parameter b of the upper local platform 11, the lower local platform 14, the upper arc panel 12, the lower arc panel 13, the middle local platform 21, the first arc panel 22, the second arc panel 23, and the third arc panel 24 are all the same.

[0028] In another specific embodiment based on the above, the top of the second arc panel 23 is flush with the upper partial platform 11, the bottom of the third arc panel 24 is flush with the lower partial platform 14, and the inclination direction of the second arc panel 23 and the third arc panel 24 on the same side is consistent. In this embodiment, a unit structure composed of a set of basic origami curved surface structures 1 and superimposed origami curved surface structures 2 is used. The upper partial platform 11 in this unit structure is used as the lower partial platform 14 of another unit structure located above it. The top of the second arc panel 23 in this unit structure is used to connect with the bottom of the third arc panel 24 of the other unit structure located above it; or, the lower partial platform 14 in this unit structure is used as the upper partial platform 11 of another unit structure located below it. The bottom of the third arc panel 24 in this unit structure is used to connect with the top of the second arc panel 23 of the other unit structure located below it, thereby enabling vertical stacking and connection.

[0029] In a further specific embodiment based on the above, the front and rear ends of the upper partial platform 11, lower partial platform 14, upper arc panel 12, lower arc panel 13, middle partial platform 21, first arc panel 22, second arc panel 23, and third arc panel 24 are all vertically aligned. In this embodiment, the front and rear ends of the unit structure composed of a set of basic origami curved surface structures 1 and superimposed origami curved surface structures 2 are all vertically aligned to facilitate the connection between adjacent unit structures.

[0030] In a further specific embodiment based on the above, the second crease 4 at the connection between the first arc panel 22 and the second arc panel 23 on the same side is vertically aligned with the first crease 3 at the connection between the upper arc panel 12 and the lower arc panel 13 on the same side. In this embodiment, the second crease 4 and the first crease 3 on both the left and right sides of the unit structure composed of a set of basic origami curved surface structures 1 and superimposed origami curved surface structures 2 are vertically aligned to facilitate the docking of adjacent unit structures on the left and right.

[0031] As attached Figure 7As shown, an embodiment of the present invention provides a stacking structure that utilizes the aforementioned origami dot matrix unit structure, including an array of unit structures. The upper local platform 11 of each unit structure serves as the lower local platform 14 of another unit structure located above it, and the top of the second arc panel 23 of this unit structure is used to connect with the bottom of the third arc panel 24 of the other unit structure located above it. The lower local platform 14 of this unit structure serves as the upper local platform 11 of another unit structure located below it, and the bottom of the third arc panel 24 of this unit structure is used to connect with the top of the second arc panel 23 of the other unit structure located below it. This allows for the vertical stacking of the array of unit structures.

[0032] In a further specific embodiment based on the above-described overlapping structure, the front end of each group of unit structures is used to connect to the rear end of another unit structure located on the front side, and the rear end of this group of unit structures is used to connect to the front end of another unit structure located on the rear side. This is how the front and rear connections of the array of unit structures are configured.

[0033] In a further specific embodiment based on the above-described overlapping structure, the second crease 4 and the first crease 3 on the left side of each group of unit structures are respectively used to connect with the second crease 4 and the first crease 3 on the right side of another unit structure located on the left, and the second crease 4 and the first crease 3 on the right side of this group of unit structures are respectively used to connect with the second crease 4 and the first crease 3 on the left side of another unit structure located on the right. This is how the left and right connections of the array of unit structures are configured.

[0034] The superimposed structure of the present invention can be formed by interleaving array unit structures and periodically arranging them in a three-dimensional array in space, such as a 6×6×6 array.

[0035] One specific embodiment of the present invention is as follows: The adjustable geometric parameters of the unit structure are defined as follows: total unit height h, upper half height. lower half height The parameters are: local platform width s, unit plane width w and unit plane length l, structural wall thickness t, surface curvature parameter b used to control the curvature of the surface, and phase deviation distance Δh. The unit structure is composed of a continuous smooth surface, which is controlled by the curvature parameter b. When b increases, the curvature of the unit increases. The local platform width s is set in the range of 1mm to 3mm.

[0036] As attached Figure 8 As shown, specifically, a composite structure based on an array of staggered and superimposed unit structures is constructed, hereinafter referred to as a composite origami structure. This composite origami structure contains 6×6×6 unit structures, and the selected geometric parameters include the total height of the unit structures. h = 10 mm, upper part height h 1 = 7 mm, lower half heighth 2 = 3 mm, local platform width s = 1 mm, unit plane dimension w = 10 mm l = 10 mm, structural thickness parameter t = 1 mm, radian parameter b = 2 mm, phase deviation distance Δ h = 5 mm.

[0037] As attached Figure 9 As shown, to verify the technical effect of this embodiment, an origami structure with the same basic geometric parameters but without an interlaced design was designed and named the original origami structure. The original origami structure and the composite origami structure were fabricated using high-precision stereolithography (SLA) technology, with ABS70 as the material. Quasi-static compression experiments were conducted on the original origami structure and the composite origami structure using an Instron 5969 universal testing system with a strain rate set to 0.001 / s, and force-displacement curves were obtained.

[0038] The force-displacement curve is converted into a stress-strain curve, and the specific stiffness and specific energy absorption index are calculated. The conversion between the force-displacement curve and the stress-strain curve is a standard method in mechanics of materials, which will not be elaborated here. Specific stiffness reflects the deformation resistance of a structure per unit mass and is defined as the ratio of elastic modulus to relative density. The elastic modulus is the slope of the linear segment of the stress-strain curve. Specific energy absorption is a key indicator for evaluating the energy absorption efficiency of a structure and is defined as the total strain energy divided by the mass. The total strain energy is the area under the stress-strain curve.

[0039] Table 1 shows the performance comparison results between the composite origami structure and the original origami structure in this embodiment: Table 1

[0040] As shown in the table above, although the mass of the composite origami structure is approximately 1.8 times that of the original structure due to the introduction of additional materials through staggered stacking, the composite structure still exhibits significant advantages in specific performance indicators excluding the influence of mass, with a 75.6% increase in specific stiffness and an 85.0% increase in specific energy absorption. This fully demonstrates that the composite origami configuration based on staggered stacking and local platforms proposed in this invention can significantly improve the load-bearing efficiency and energy absorption capacity of the structure, making it an effective solution for achieving lightweight and high-performance structural design.

[0041] Experiments show that, compared with the original origami structure, the specific stiffness of this composite origami structure is increased by 75.6% and the specific energy absorption is increased by 85.0%. It has the advantages of strong load-bearing capacity and high energy absorption efficiency, and is suitable for the high-performance structural requirements of spacecraft and other applications.

[0042] The working principle and process of this invention are as follows: When the composite origami structure is subjected to external compressive load, the force is first transmitted to the upper local platform 11 at the top of the unit. Due to the buffering effect of the platform, the stress flow is dispersed, preventing premature failure at the nodes. As the load increases, the complex network composed of the main creases and the secondary creases generated by the overlapping creases undergoes buckling deformation. The multiple creases significantly increase the total length of the plastic hinges, enabling the structure to convert more mechanical energy into internal energy dissipation during crushing. At the same time, the asymmetric geometric proportions guide the structure to undergo specific asymmetric deformation modes, further enhancing the stability of the structure in the later stages of compression and preventing instantaneous instability.

[0043] This invention relates to a lightweight composite Miura origami structure based on asymmetric mirroring, local platform design, and staggered superposition. This structure possesses high specific stiffness, high specific strength, and strong energy absorption characteristics. Furthermore, the structural performance can be adjusted by modifying the curvature parameters. b Thickness parameters t and height ratio h 1: h The second type allows for flexible adjustment to adapt to different working conditions. It solves the problems of existing single origami configurations having limited crease density per unit volume, fewer energy dissipation paths, difficulty in meeting high-performance requirements under complex working conditions such as compression loads or dynamic impacts, and severe stress concentration at crease intersections, resulting in insufficient load-bearing capacity and energy absorption efficiency.

[0044] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in the invention are only for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that those skilled in the art will understand that various changes, modifications, substitutions, refinements, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations should be considered within the scope of protection of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paper lattice unit structure for bearing and absorbing energy, characterized in that: It includes a basic origami curved surface structure (1) and a superimposed origami curved surface structure (2). The basic origami curved surface structure (1) includes an arc-shaped upper partial platform (11), an arc-shaped lower partial platform (14), two upper arc panels (12) and two lower arc panels (13). The arc-shaped creases on the left and right sides of the upper partial platform (11) are respectively connected to an upper arc panel (12). The upper arc panels (12) on both sides are set with an flared shape facing downwards, and the lower ends are respectively connected to a lower arc panel (13). The lower arc panels (13) on both sides are set with a constricted shape facing downwards, and the lower ends are respectively connected to the arc-shaped creases on the left and right sides of the lower partial platform (14). The superimposed origami curved surface structure (2) includes an arc-shaped middle local platform (21), two first arc panels (22), two second arc panels (23) and two third arc panels (24). The middle local platform (21) is arranged in parallel between the upper local platform (11) and the lower local platform (14). The arc-shaped creases on the left and right sides are respectively connected to the first arc panel (22) which is flared upward and the third arc panel (24) which is flared downward. The first arc panel (22) penetrates and merges with the upper arc panel (12) on the same side. The ends of the two first arc panels (22) located on the side of the upper arc panel (12) away from the middle local platform (21) are respectively connected to the second arc panel (23) which is flared upward. The third arc panel (24) penetrates and merges with the lower arc panel (13) on the same side.

2. The origami lattice unit structure for bearing and absorbing energy according to claim 1, characterized in that: The middle local platform (21) is vertically aligned with the upper local platform (11) and the lower local platform (14).

3. The origami lattice unit structure for bearing and absorbing energy according to claim 1, characterized in that: The vertical height distance between the top of the second arc panel (23) and the bottom of the third arc panel (24) on the same side is: The vertical height distance between the top of the second arc panel (23) and the bottom of the upper arc panel (12) is The vertical height distance between the bottom of the upper arc panel (12) and the bottom of the third arc panel (24) is... , ,and Not equal to .

4. The origami lattice unit structure for bearing and absorbing energy according to claim 1, characterized in that: The radian parameter b of the upper local platform (11), lower local platform (14), upper arc panel (12), lower arc panel (13), middle local platform (21), first arc panel (22), second arc panel (23) and third arc panel (24) are all the same.

5. The origami lattice unit structure for bearing energy absorption according to claim 1, characterized in that: The top of the second arc panel (23) is flush with the upper local platform (11), the bottom of the third arc panel (24) is flush with the lower local platform (14), and the second arc panel (23) and the third arc panel (24) on the same side are in the same tilt direction.

6. The origami lattice unit structure for bearing energy absorption according to claim 5, characterized in that: The front and rear ends of the upper local platform (11), lower local platform (14), upper arc panel (12), lower arc panel (13), middle local platform (21), first arc panel (22), second arc panel (23) and third arc panel (24) are all vertically aligned.

7. The origami lattice unit structure for bearing energy absorption according to claim 6, characterized in that: The second crease (4) at the connection between the first arc panel (22) and the second arc panel (23) on the same side is vertically aligned with the first crease (3) at the connection between the upper arc panel (12) and the lower arc panel (13) on the same side.

8. A composite structure, employing the origami lattice unit structure for carrying energy absorption as described in claim 5, characterized in that: The array includes a unit structure, where the upper local platform (11) of each unit structure serves as the lower local platform (14) of another unit structure located above it, and the top of the second arc panel (23) of the unit structure is used to connect to the bottom of the third arc panel (24) of another unit structure located above it. The lower local platform (14) of the unit structure serves as the upper local platform (11) of another unit structure located below, and the bottom of the third arc panel (24) of the unit structure is used to connect with the top of the second arc panel (23) of the other unit structure located below.

9. A composite structure, employing the origami lattice unit structure for carrying energy absorption as described in claim 6, characterized in that: It includes array cell structures, where the front end of each cell structure is used to connect to the back end of another cell structure located on the front side, and the back end of the cell structure is used to connect to the front end of another cell structure located on the rear side.

10. A composite structure, employing the origami lattice unit structure for carrying energy absorption as described in claim 7, characterized in that: It includes an array of unit structures, with the second crease (4) and the first crease (3) on the left side of each unit structure, which are used to connect to the second crease (4) and the first crease (3) on the right side of another unit structure located on the left side, respectively. The second crease (4) and the first crease (3) on the right side of the unit structure are used to connect to the second crease (4) and the first crease (3) on the left side of another unit structure located on the right side, respectively.

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