A bamboo tube configuration beetle sheath wing bionic energy absorption superstructure and a preparation method thereof

Abstract

A bamboo tube configuration beetle sheath wing energy absorption superstructure and preparation method, based on the internal periodic arrangement of the sheath of the bamboo tube structure, the basic unit is arrayed along the tube diameter, and the beetle sheath wing surface microstructure is stacked in a spiral along the other diameter perpendicular to the array direction, and the structure design is completed. After digital modeling and digital slicing, the bamboo tube-beetle sheath wing energy absorption structure is obtained by importing a 3D printer integrated printing forming. In the preparation process, the structural characteristics and performance advantages of the bamboo tube segmented configuration and the beetle sheath wing surface multilayer spiral microstructure are utilized to realize the bionic composite design and preparation.

Description

TECHNICAL FIELD

[0001] The present application relates to a bamboo tube configuration imitating beetle elytra bionic energy-absorbing superstructure and a preparation method thereof, and belongs to the field of lightweight bionic superstructure design. BACKGROUND

[0002] In recent years, with the development of industrial equipment, material preparation and mechanical processing technology, the advanced protection and energy-absorbing requirements of high-end equipment are continuously improved. Researchers have designed various lightweight energy-absorbing structures in order to achieve the basic characteristics of lightweight and high strength, as well as strong energy-absorbing capacity, while also possessing some other functional characteristics (such as sound absorption and sound insulation). In nature, the organizational structure of many plants and animals has the characteristics of lightweight and high strength, and also has certain energy-absorbing capacity. For example, the segmented structure of bamboo tubes with diaphragms. In addition, some biological tissues have special cell arrangement sequences, which enable them to have smaller relative density and greater compressive strength. For example, the spiral stacking structure of the beetle elytra surface microstructure and the Atlantic blue crab cheliped surface microstructure.

[0003] The hollow cylindrical structure of the bamboo tube is an ancient and universal structure form, which has sufficient strength and stiffness on the basis of lightweight, as well as strong energy-absorbing capacity. In addition, the diaphragm inside the bamboo tube structure can strengthen the structure to some extent, increase the stability of the structure, and greatly improve the load-bearing capacity of the bamboo tube structure compared to ordinary hollow cylindrical structures. In addition, the spaces separated by the diaphragm can be utilized to achieve certain heat and sound insulation functions, realizing the integration of structure and function. However, it is undeniable that the energy-absorbing capacity of a single bamboo tube structure is limited and not as obvious as that of some specially designed hybrid structures. SUMMARY

[0004] The technical problem solved by the present application is that the energy-absorbing capacity of the traditional hollow cylindrical structure is limited and the effect is not obvious. Therefore, a bamboo tube configuration imitating beetle elytra bionic energy-absorbing superstructure and a preparation method thereof are proposed.

[0005] The technical problem solved by the present application is solved by the following technical solution:

[0006] A bamboo tube configuration imitating beetle elytra bionic energy-absorbing superstructure, comprising a single-layer structure, the single-layer structure is spirally stacked to form a superstructure spiral body, the deflection angle of each single-layer structure during the spirally stacking process is the same, and each single-layer structure rotates around the same longitudinal axis; the single-layer structure is formed by arraying thin-walled cylindrical basic unit structures along a preset radial direction, and an internal diaphragm is arranged between each thin-walled cylindrical basic unit structure of the single-layer structure, the shape of each internal diaphragm is determined according to the shape of the cylinder diameter of the thin-walled cylindrical basic unit structure, and each internal diaphragm is arranged at equal intervals.

[0007] Each single-layer structure is taken as a standard for the bottommost single-layer structure, each single-layer structure upwardly by one layer is recorded as a deflection angle of m, and the number of stacked layers is recorded as N, and the relationship between the number of stacked layers and the deflection angle is m x N = 180° x N';

[0008] The deflection angle unit is °, and N and N' are positive integers.

[0009] The superstructure spiral body is cut into an arbitrary cross-sectional shape according to the design requirements of the biomimetic energy absorption superstructure after spiral stacking, and the obtained cross-sectional shape structure is taken as the biomimetic energy absorption superstructure.

[0010] The preset shape of the biomimetic energy absorption superstructure is confirmed according to a digital model, the digital model is a bamboo tube configuration and a thin-walled cylindrical basic unit structure designed by a partition, a single-layer structure formed by the thin-walled cylindrical basic unit structure and the preset position partition, and a superstructure spiral body before cutting is designed by a beetle ala imitation configuration.

[0011] The method for cutting the superstructure spiral body into a cross-sectional shape is:

[0012] The digital model is digitally sliced to obtain slice data, the slice data is imported into a 3D printer, the required metal powder raw material is selected according to the size information of the required biomimetic energy absorption superstructure, the biomimetic energy absorption superstructure after cutting is obtained by integrated processing of the 3D printer.

[0013] The biomimetic energy absorption superstructure is enhanced by the beetle ala imitation configuration to enhance the energy absorption structure and keep lightweight, the longitudinal and transverse mutual support between the single-layer structures is realized by the longitudinal and transverse remaining single-layer structures to improve the bearing capacity, and the spiral stacking and the partition are arranged between the single-layer structures and the thin-walled cylindrical basic unit structures to prevent dislocation damage.

[0014] The partition at the preset position is provided with micropores, the micropores of the thin-walled cylindrical basic unit structure are used to enhance the sound absorption, heat insulation and heat transfer functions, the biomimetic energy absorption superstructure is a column structure with a preset cross-sectional shape, the preset cross-sectional shape is determined according to the application requirements of the biomimetic energy absorption superstructure, the cross-sectional shapes of the inner wall and the outer wall of the thin-walled cylindrical basic unit structure are designed to be the same or different, and the wall thicknesses are designed to be different.

[0015] The rotation angle difference between the bottommost single-layer structure and the topmost single-layer structure is an integer multiple of 180 degrees, the preset partition shape is the same as the inner wall geometry of the thin-walled cylindrical basic unit structure, the preset partition thickness and the cylinder wall thickness of the thin-walled cylindrical basic unit structure are determined according to the application requirements of the biomimetic energy absorption superstructure, and the preset partition arrangement interval is 1-3 times the inner diameter of the thin-walled cylindrical basic unit structure.

[0016] The cross-sectional shape of the inner wall and the outer wall of the thin-walled cylindrical basic unit structure is designed to be the same or different, and the shape and size of the preset partition plate and the inner diameter are designed to be the same.

[0017] A preparation method of a beetle ala bionic energy-absorbing superstructure according to a bamboo tube configuration, comprising:

[0018] The geometric parameters of the bionic energy-absorbing superstructure designed in the beetle ala bionic configuration and the bamboo tube structure configuration are preset, the thin-walled cylindrical basic unit structure is designed by the bamboo tube configuration and the partition plate, the single-layer structure formed by the thin-walled cylindrical basic unit structure and the partition plate at the preset position, and a digital model designed in the beetle ala bionic configuration is drawn;

[0019] A three-dimensional digital model of the superstructure spiral body after spiral stacking is drawn, the three-dimensional digital model is converted into STL format data and exported;

[0020] The STL format digital model is subjected to digital cross-section slicing to obtain slicing data of the three-dimensional digital model;

[0021] 3D printing process parameters are determined, metal powder raw materials are selected, 3D layer-by-layer printing is carried out according to the slicing data of the three-dimensional digital model, and a complete cut bionic energy-absorbing superstructure is obtained.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] (1) The bamboo tube configuration beetle ala bionic energy-absorbing superstructure and the preparation method provided by the present application have the following advantages: the microstructure of the beetle ala surface is closely arranged, the overall structure has high rigidity and strength, and the beetle can fly easily and lightly while the ala is well protected. If the advantages of the two are combined, a lightweight high-strength bionic structure with high energy-absorbing characteristics can be obtained. Through the unique design of the present application, the bamboo tube segmented configuration is combined with the spiral stacking arrangement form of the beetle ala surface microstructure, the advantages of each structure form are complementary, and a new type of superstructure with lightweight, high strength, high energy-absorbing characteristics and multi-functional potential is obtained;

[0024] (2) The present application uses a bionic bamboo tube structure with periodic partition plates as a basic structural unit, rotates each layer at a certain angle according to the arrangement form of the beetle ala surface microstructure, and spirally stacks the layers. The bionic bamboo tube basic structural unit has a large amount of space due to its hollow interior, is not easy to compact, has a long compression compaction strain, and has a high energy-absorbing travel; the bionic bamboo diaphragm arranged periodically in the interior can strengthen the structure, increase the stability of the structure, and thus improve the load-carrying capacity and energy-absorbing characteristics of the structure;

[0025] (3) The present application is based on the bionic concept and the hybrid design concept, imitates the bamboo tube segmented configuration and the spiral structure of the beetle elytra surface microstructure to design and prepare, obtains a bamboo tube-beetle elytra bionic energy absorption superstructure, has the characteristics of light weight, high bearing, energy absorption is strong and multi-functional potential, the designability is strong, the preparation is flexible, has the wide application prospect in the aerospace, vehicle, ship, military armor and other industries. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The design concept schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure provided by the present application is shown in the figure.

[0027] Figure 2 The single-layer structure schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure provided by the present application is shown in the figure.

[0028] Figure 3 The basic structure unit schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure provided by the present application is shown in the figure.

[0029] Figure 4 The various cross section schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure basic structure unit provided by the present application is shown in the figure.

[0030] Figure 5 The final cutting cylinder structure schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure provided by the present application is shown in the figure.

[0031] Figure 6 The basic structure unit schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure embodiment 2 provided by the present application is shown in the figure.

[0032] Figure 7 The single-layer structure schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure embodiment 2 provided by the present application is shown in the figure.

[0033] Figure 8 The design concept schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure embodiment 2 provided by the present application is shown in the figure.

[0034] Figure 9 The final cutting cylinder structure schematic diagram of the bamboo tube-beetle elytra bionic energy absorption superstructure embodiment 2 provided by the present application is shown in the figure. DETAILED DESCRIPTION

[0035] A bamboo tube configuration beetle sheath wing energy absorption superstructure and a preparation method thereof, based on a bamboo tube structure with periodically arranged partitions, the basic units are arrayed along the tube radial direction, and the beetle sheath wing surface microstructure is stacked in a spiral manner along another radial direction perpendicular to the array direction, to complete the structure design. After digital modeling and digital slicing, the bamboo tube-beetle sheath wing energy absorption structure is obtained by integrated printing in a 3D printer. The bamboo tube segmented configuration, the structural characteristics and performance advantages of the beetle sheath wing surface multilayer spiral microstructure are utilized in the preparation process to realize the bionic composite design and preparation.

[0036] The bamboo tube configuration beetle sheath wing energy absorption superstructure comprises a single-layer structure, the single-layer structures are spirally stacked to form a superstructure spiral body, the deflection angles of the single-layer structures in the spirally stacking process are the same, and the single-layer structures are rotated around the same longitudinal axis; the single-layer structures are formed by arraying and arranging thin-walled cylindrical basic unit structures along a preset radial direction, and the thin-walled cylindrical basic unit structures of the single-layer structures are provided with built-in partitions, the shapes of the built-in partitions are determined according to the shapes of the tube diameters of the thin-walled cylindrical basic unit structures, and the built-in partitions are arranged at equal intervals.

[0037] Each single-layer structure takes the bottom single-layer structure as a standard, the deflection angle of each single-layer structure is m, the number of stacked layers is N, and the relationship between the number of stacked layers and the deflection angle is m x N = 180° x N'.

[0038] The deflection angle is in degrees, and N and N' are positive integers.

[0039] The superstructure spiral body is cut into any cross-sectional shape according to the design requirements of the bionic energy absorption superstructure after the spirally stacking, and the structure of the obtained cross-sectional shape is taken as the bionic energy absorption superstructure.

[0040] The preset shape of the bionic energy absorption superstructure is determined according to a digital model, the digital model is used to design a thin-walled cylindrical basic unit structure based on a bamboo tube configuration and a partition, a single-layer structure is formed by the thin-walled cylindrical basic unit structure and a partition at a preset position, and the superstructure spiral body before cutting is designed in a beetle sheath wing bionic configuration.

[0041] The method for cutting the superstructure spiral body into a cross-sectional shape is as follows:

[0042] The digital model is subjected to digital slicing to obtain slicing data, the slicing data is imported into a 3D printer, a metal powder raw material required by the bionic energy absorption superstructure is selected, and the bionic energy absorption superstructure after cutting is obtained by integrated processing and molding in the 3D printer.

[0043] The bionic energy absorption superstructure is configured by imitating beetle elytra to enhance the energy absorption structure and keep lightweight, and each single-layer structure is supported by the remaining single-layer structures in the longitudinal and transverse directions to improve the bearing capacity; each single-layer structure and each thin-walled cylindrical basic unit structure are prevented from being damaged by misalignment by means of spiral stacking and partition plates.

[0044] The partition plate at the preset position is provided with micropores, and the micropores of each thin-walled cylindrical basic unit structure are used to enhance the sound absorption, heat insulation and heat transfer functions; the bionic energy absorption superstructure is a column structure with a preset cross-sectional shape, the cross-sectional shape of the inner wall and the outer wall of each thin-walled cylindrical basic unit structure is designed to be the same or different, and the wall thickness is designed to be different.

[0045] The rotation angle difference between the bottommost single-layer structure and the topmost single-layer structure is an integer multiple of 180 degrees, the preset partition plate has the same inner wall geometry as the thin-walled cylindrical basic unit structure, and the thickness of the preset partition plate and the thickness of the cylinder wall of the thin-walled cylindrical basic unit structure are determined according to the application requirements of the bionic energy absorption superstructure, and the arrangement interval of the preset partition plate is 1-3 times the inner diameter of the thin-walled cylindrical basic unit structure.

[0046] When the cross-sectional shape of the inner wall and the outer wall of the thin-walled cylindrical basic unit structure is designed to be the same or different, the shape and size of the preset partition plate and the inner diameter are designed to be the same.

[0047] The preparation method of the beetle elytra bionic energy absorption superstructure with a bamboo tube configuration is as follows:

[0048] The geometric parameters of the bionic energy absorption superstructure designed by imitating the beetle elytra configuration and the bamboo tube structure configuration are preset, the thin-walled cylindrical basic unit structure is designed by the bamboo tube configuration and the partition plate, the single-layer structure formed by the thin-walled cylindrical basic unit structure and the partition plate at the preset position is drawn, and a digital model designed by imitating the beetle elytra configuration is drawn;

[0049] A three-dimensional digital model of the superstructure spiral body after spiral stacking is drawn, the three-dimensional digital model is converted into STL format data and exported;

[0050] The STL format digital model is digitally cross-sectioned to obtain slice data of the three-dimensional digital model;

[0051] The 3D printing process parameters are determined, the metal powder raw material is selected, the three-dimensional digital model is sliced according to the slice data, and the complete cut bionic energy absorption superstructure is obtained by 3D layer-by-layer printing.

[0052] The following will be further described in conjunction with the drawings and preferred embodiments in the specification:

[0053] In the current embodiment, as Figure 1As shown, the bamboo tube-beetle sheath bionic energy absorption superstructure, the overall structure is formed by the single-layer structure 2 spirally stacking at a certain angle around the middle longitudinal axis 1, and the overall structure is integrally formed by using 3D printing technology. Each layer of single-layer structure 2 has the same rotation angle, and the rotation angle difference between the first layer and the last layer is an integer multiple of 180 degrees.

[0054] As shown in Figure 2 , the single-layer structure 2 is composed of a plurality of bamboo tube basic structure units 3 arranged in an array along the radial direction and connected closely. As shown in Figure 3 , the basic unit structure 3 is a bamboo tube thin-walled structure composed of a cylindrical structure part 4 and internal partition plates 5 arranged periodically, the shape of the partition plate is the same as the geometric shape of the cylindrical inner wall, and the thickness of the partition plate and the thickness of the cylinder wall are determined as needed. The recommended partition plate arrangement interval is 1-3 times the inner diameter of the cylindrical structure. The cross-sectional shape of the cylindrical structure can be any geometric shape, and the specific shape can be selected by the designer according to the specific situation. The inner and outer wall cross-sectional geometric shapes can be different, and the wall thickness changes accordingly, which is determined according to the specific situation.

[0055] As shown in Figure 4 , several possible cross-sectional forms of the cylindrical structure, wherein (a) is a cylindrical structure cross section with a square outer diameter and a circular inner diameter, and the partition plate is a circular shape with the same size as the inner diameter, (b) is a cylindrical structure cross section with a circular outer diameter and a regular hexagonal inner diameter, and the partition plate is a regular hexagonal shape with the same size as the inner diameter, and (c) is a cylindrical structure cross section with a regular hexagonal outer diameter and a circular inner diameter, and the partition plate is a circular shape with the same size as the inner diameter.

[0056] As shown in Figure 5 , the structure can be finally cut into a column structure with any geometric cross section according to specific needs, and the bamboo tube-beetle sheath bionic energy absorption superstructure 4D printing preparation method. Use the commercial three-dimensional modeling software SolidWorks to model the above bamboo tube-beetle sheath bionic energy absorption superstructure according to the specific size, get the corresponding three-dimensional model data, and convert the data into STL format file. At this time, the format file is the three-dimensional model of the spiral superstructure after spiral stacking before slicing (cutting) processing. Then import the obtained STL format file into the commercial section model Cura, and digitally slice the digital model to obtain the slicing data of the three-dimensional digital model, that is, the bionic energy absorption superstructure after slicing (cutting) processing.

[0057] Import the obtained slicing data of the three-dimensional digital model into the corresponding 3D printer, adjust the corresponding power and scanning rate, use the corresponding metal powder for printing, and finally obtain the integrally formed bamboo tube-beetle sheath bionic energy absorption superstructure.

[0058] Example 1

[0059] (1) The three-dimensional digital model of the bamboo tube-beetle coleoptera bionic energy-absorbing superstructure was drawn by using a commercial three-dimensional modeling software SolidWorks. The basic structural unit 3 is a bionic bamboo tube thin-walled structure with a periodic partition in a circular cross section, and the geometric diagram is shown in Figure 3 , the outer wall diameter is 5.5 mm, the inner wall diameter is 4.5 mm, the wall thickness is 0.5 mm, the circular partition is arranged periodically with an interval of 10 mm, the diameter of the circular partition is consistent with the inner diameter of the tube, and the thickness of the partition is consistent with the wall thickness. In order to facilitate powder removal after 3D printing, a circular hole with an inner diameter of 0.5 mm is opened at the center of the circular partition. A plurality of basic structural units 3 are closely arranged along the radial direction to form a single-layer structure 2, as shown in Figure 2 . Eleven single-layer structures 2 are stacked along the normal direction of the single-layer plane, and each upper layer is rotated by 18 degrees around the same central longitudinal axis 1, that is, the spiral stacking is performed, and the complete structure is obtained, as shown in Figure 1 . Finally, a square with a side length of 50 mm is extended outward with the rotating central longitudinal axis 1 as the geometric center axis, and the square is cut along each side to obtain a hexahedral columnar structure, as shown in Figure 5 (a). The three-dimensional digital model drawn is converted into STL format data and exported.

[0060] (2) The STL format data obtained in the above step is imported into a commercial model segmentation software Cura, and the three-dimensional digital model is digitally cross-sectioned to obtain the slice data of the three-dimensional digital model.

[0061] (3) The slice data of the three-dimensional digital model obtained in the above step is imported into a BLT S310 type 3D printer, and a laser selective melting (SLM) 3D printing technology is adopted, using IN718 metal powder as raw material. When printing the skin layer, the laser power is 70 W, the scanning speed is 850 mm / s, the filling laser power is 300 W, and the scanning speed is 950 mm / s. Finally, an integrated bamboo tube-beetle coleoptera bionic energy-absorbing superstructure is obtained.

[0062] Example 2

[0063] (1) The three-dimensional digital model of the bamboo tube-beetle coleoptera bionic energy-absorbing superstructure was drawn by using a commercial three-dimensional modeling software SolidWorks. The basic structural unit 3 is a bionic bamboo tube thin-walled structure with a periodic partition in a circular cross section, and the geometric diagram is shown in Figure 6 , the outer wall diameter is 5.5 mm, the inner wall diameter is 4.5 mm, the wall thickness is 0.5 mm, the circular partition is arranged periodically with an interval of 10 mm, the diameter of the circular partition is consistent with the inner diameter of the tube, and the thickness of the partition is consistent with the wall thickness. In order to facilitate powder removal after 3D printing, a circular hole with an inner diameter of 0.5 mm is opened at the center of the circular partition. A plurality of basic structural units 3 are closely arranged along the radial direction to form a single-layer structure 2, as shown in Figure 7As shown. Set 7 single-layer structure 2 along its single-layer plane normal stack, each upper layer is rotated 30 degrees around the same central longitudinal axis 1, that is, spiral stacking, to obtain a complete structure, as shown in Figure 8 As shown. Finally, take the rotating central longitudinal axis 1 as the geometric center axis, expand a circle with a radius of 50mm, cut along the circle edge to obtain a cylindrical columnar structure, as shown in Figure 9 As shown. Convert the drawn three-dimensional digital model into STL format data and export.

[0064] (2) The STL format data obtained in the above step is imported into the commercial model segmentation software Cura, and the three-dimensional digital model is digitally cross-sectioned to obtain the slice data of the three-dimensional digital model.

[0065] (3) The slice data of the three-dimensional digital model obtained in the above step is imported into BLT S310 model 3D printer, laser selective melting (SLM) 3D printing technology is adopted, 17-4PH metal powder is used as raw material, when printing the skin layer, the laser power is 55W, the scanning speed is 1000mm / s, the filling laser power is 320W, and the scanning speed is 1200mm / s, finally an integrated bamboo tube-beetle sheath wing bionic energy absorption superstructure is obtained.

[0066] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

[0067] The contents not described in detail in the specification of the present application belong to the known technology of those skilled in the art.

Claims

1. A bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking the elytra of a beetle, characterized in that: It includes single-layer structures, which are spirally stacked to form a superstructure helical body. Each single-layer structure has the same deflection angle during the spiral stacking process and rotates around the same longitudinal axis. The single-layer structure is formed by arranging thin-walled cylindrical basic unit structures in a preset radial array. Each thin-walled cylindrical basic unit structure of the single-layer structure is provided with an internal partition. The shape of each internal partition is determined according to the cylindrical diameter shape of the thin-walled cylindrical basic unit structure, and the internal partitions are arranged at equal intervals.

2. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra as described in claim 1, characterized in that: Each single-layer structure is based on the bottom single-layer structure as the standard. The deflection angle of each single-layer structure above it is recorded as m, and the number of stacked layers is recorded as N. The relationship between the number of stacked layers and the deflection angle is: m×N=180°×N′; The deflection angle is in degrees, and both N and N' are positive integers.

3. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra as described in claim 2, characterized in that: The superstructure helical body is cut into arbitrary cross-sectional shapes according to the design requirements of the biomimetic energy-absorbing superstructure after being stacked in a helical pattern. The structure with the obtained cross-sectional shape after cutting is used as the biomimetic energy-absorbing superstructure.

4. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra as described in claim 2, characterized in that: The preset shape of the biomimetic energy-absorbing superstructure is confirmed by drawing a digital model. The digital model uses a bamboo tube configuration and partitions to design a thin-walled cylindrical basic unit structure. The single-layer structure formed by the thin-walled cylindrical basic unit structure and the partitions at preset positions is designed with a beetle elytra biomimetic configuration to design the superstructure spiral before cutting.

5. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra as described in claim 1, characterized in that: The method for cutting the cross-sectional shape of a superstructure helical is as follows: The digital model is digitized and sliced ​​to obtain slice data. The slice data is then imported into a 3D printer. The required metal powder raw materials are selected according to the size information of the desired biomimetic energy-absorbing superstructure. The 3D printer is used to process and shape the material in one piece to obtain the cut biomimetic energy-absorbing superstructure.

6. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra according to claim 5, characterized in that: The biomimetic energy-absorbing superstructure enhances the energy-absorbing structure and maintains lightweight by adopting the biomimetic configuration of beetle elytra. Each single-layer structure is supported by the other single-layer structures in the longitudinal and transverse directions to improve the load-bearing capacity. The single-layer structure and each thin-walled cylindrical basic unit structure are prevented from slipping and being damaged by spiral stacking and partitions.

7. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra according to claim 1, characterized in that: Micropores are provided on the partition at the preset position. The micropores of each thin-walled cylindrical basic unit structure are used to enhance the sound absorption, heat insulation and heat transfer functions. The biomimetic energy-absorbing superstructure is a column structure with a preset cross-sectional shape. The preset cross-sectional shape is determined according to the application requirements of the biomimetic energy-absorbing superstructure. When the cross-sectional shapes of the inner and outer walls of each thin-walled cylindrical basic unit structure are set to be the same or different, the wall thickness design is different.

8. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra as described in claim 1, characterized in that: The rotation angle difference between the bottom single-layer structure and the top single-layer structure is an integer multiple of 180 degrees. The preset partition shape is the same as the inner wall geometry of the thin-walled cylindrical basic unit structure. The preset partition thickness is determined according to the application requirements of the biomimetic energy-absorbing superstructure. The preset partition spacing is preset to be 1-3 times the inner diameter of the thin-walled cylindrical basic unit structure.

9. The bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra as described in claim 8, characterized in that: When the inner and outer walls of the thin-walled cylindrical basic unit structure have the same or different cross-sectional shapes, the shape and size of the pre-set partition and the inner diameter are designed to be the same.

10. A method for preparing a bamboo tube-shaped biomimetic energy-absorbing superstructure mimicking beetle elytra according to claim 1, characterized in that... include: The geometric parameters of the biomimetic energy-absorbing superstructure designed with the biomimetic configuration of beetle elytra and bamboo tube are preset. The thin-walled cylindrical basic unit structure is designed with bamboo tube configuration and partition. The single-layer structure formed by the thin-walled cylindrical basic unit structure and the partition at the preset position is drawn into a digital model designed with the biomimetic configuration of beetle elytra. Draw a three-dimensional digital model of the superstructure helical body after helical stacking, convert the three-dimensional digital model into STL format data and export it; Digital cross-sectional slices are made from the STL format digital model to obtain slice data of the three-dimensional digital model; The 3D printing process parameters were determined, metal powder raw materials were selected, and 3D layer-by-layer printing was carried out based on the slice data of the three-dimensional digital model to obtain the complete cut biomimetic energy-absorbing superstructure.

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