A method and device for determining the tensile and compressive modulus of a lattice structure

Abstract

The application belongs to the technical field of structural strength design, and particularly relates to a method and device for determining the tensile and compressive modulus of a grid structure. The method comprises the following steps: S1, determining the long diagonal size 2a and short diagonal size 2b of a grid unit, and the beam width h of the grid unit, wherein the grid unit is the smallest repeating unit of the grid structure, the grid unit is a diamond-shaped beam, and the grid structure is part of a full-aircraft structure; S2, obtaining the elastic modulus E of the material of the grid structure; and S3, determining the tensile and compressive modulus of the grid structure according to the following formula: E1=(Eh 3 aL) / (b 3 L 2 +h 2 a 2 b) and E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a), wherein E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit. The application shortens the calculation time and improves the efficiency of the iteration and parameter optimization of the full-aircraft structure scheme.

Description

Technical Field

[0001] The present application belongs to the technical field of structural strength design, and in particular relates to a method and device for determining the tensile and compressive moduli of a grid structure. Background Art

[0002] Existing methods for determining the tensile and compressive moduli of aircraft grid structures mainly establish a detailed model of the grid structure and connect it to the natural grid model of the entire aircraft for joint solution. The quality of the model mesh division and the unit size have a significant impact on the calculation results, and the establishment and solution of the detailed model are time-consuming. When the structural parameters change, the model needs to be re-established, which is not conducive to variable parameter research and iterative optimization of solutions. Summary of the Invention

[0003] In order to solve the above problems, the present application provides a method and device for determining the tensile and compressive moduli of a grid structure, so as to get rid of the limitations of the finite element calculation method.

[0004] In a first aspect, the present application provides a method for determining the tensile and compressive modulus of a grid structure, mainly comprising:

[0005] Step S1, determining the long side diagonal dimension 2a, the short side diagonal dimension 2b, and the beam width h of the grid unit, wherein the grid unit is the smallest repeating unit constituting the grid structure, the grid unit is a diamond-shaped beam, and the grid structure is part of the entire machine structure;

[0006] Step S2: obtaining the elastic modulus E of the material of the grid structure;

[0007] Step S3: Determine the tensile and compressive modulus of the grid structure according to the following formula:

[0008] E1=(Eh 3 aL) / (b 3 L 2 +h 2 a 2 b);

[0009] E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a);

[0010] Wherein, E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit.

[0011] Preferably, in step S1 , the diagonal size of the long side and the diagonal size of the short side of the grid unit are obtained by measurement.

[0012] Preferably, in step S1 , the size of the grid structure is measured, and the diagonal size of the long side and the diagonal size of the short side of the grid unit are calculated according to the number of grid units in the grid structure.

[0013] Preferably, step S3 further includes:

[0014] Step S4: Optimizing the grid structure according to the tensile and compressive moduli of the grid structure so that the grid structure can resist a set tensile force or compressive force.

[0015] Preferably, in step S4, optimizing the grid structure includes modifying the number of grid units.

[0016] Preferably, in step S4, optimizing the grid structure includes modifying the shape of the grid units.

[0017] A second aspect of the present application provides a device for determining the tensile and compressive modulus of a grid structure, mainly comprising:

[0018] The grid unit size parameter acquisition module is used to determine the long side diagonal size 2a, the short side diagonal size 2b, and the grid unit beam width h of the grid unit. The grid unit is the smallest repeating unit that constitutes the grid structure. The grid unit is a diamond-shaped beam, and the grid structure is part of the entire machine structure.

[0019] A material parameter acquisition module, configured to acquire the elastic modulus E of the material of the grid structure;

[0020] The grid structure tensile and compressive modulus calculation module is used to determine the tensile and compressive modulus of the grid structure according to the following formula:

[0021] E1=(Eh 3 aL) / (b 3 L 2 +h 2 a 2 b);

[0022] E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a);

[0023] Wherein, E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit.

[0024] Preferably, the grid unit size parameter acquisition module includes:

[0025] The measuring unit is used to obtain the diagonal size of the long side and the diagonal size of the short side of the grid unit by measurement.

[0026] Preferably, the grid unit size parameter acquisition module includes:

[0027] The calculation unit is used to calculate the diagonal size of the long side and the diagonal size of the short side of the grid unit by measuring the size of the grid structure and according to the number of grid units in the grid structure.

[0028] Preferably, the grid structure tensile and compressive modulus determination device further comprises:

[0029] The optimization module is used to optimize the grid structure according to the tensile and compressive moduli of the grid structure so that the grid structure can resist a set tensile force or compressive force.

[0030] Preferably, in the optimization module, optimizing the grid structure includes modifying the number of grid units.

[0031] Preferably, in the optimization module, optimizing the grid structure includes modifying the shape of the grid units.

[0032] A third aspect of the present application provides a computer device comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining the tensile and compressive modulus of a grid structure as described above.

[0033] In a fourth aspect, the present application provides a readable storage medium, wherein the readable storage medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the method for determining the tensile and compressive modulus of a grid structure as described above.

[0034] This application shortens the calculation time and improves the efficiency of overall machine structure scheme iteration and parameter optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flow chart of a preferred embodiment of the method for determining the tensile and compressive modulus of the grid structure of the present application.

[0036] Figure 2 It is a schematic diagram of the grille structure.

[0037] Figure 3 It is a schematic diagram of the grid unit model.

[0038] Figure 4 It is a schematic diagram of applying tensile load to the grid unit model.

[0039] Figure 5 It is a simplified schematic diagram of the grid unit model.

[0040] Figure 6 It is a structural diagram of a computer device suitable for implementing the embodiments of the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the implementation of this application will be described in more detail below in conjunction with the drawings in the implementation of this application. In the drawings, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and should not be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in conjunction with the drawings.

[0042] The first aspect of the present application provides a method for determining the tensile and compressive modulus of a grid structure, such as Figure 1 As shown, it mainly includes:

[0043] Step S1, determining the long side diagonal dimension 2a, the short side diagonal dimension 2b, and the beam width h of the grid unit, wherein the grid unit is the smallest repeating unit constituting the grid structure, the grid unit is a diamond-shaped beam, and the grid structure is part of the entire machine structure;

[0044] Step S2: obtaining the elastic modulus E of the material of the grid structure;

[0045] Step S3: Determine the tensile and compressive modulus of the grid structure according to the following formula:

[0046] E1=(Eh 3 aL) / (b 3 L 2 +h 2 a 2 b);

[0047] E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a);

[0048] Wherein, E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit.

[0049] The present application can quickly calculate the tensile and compressive moduli of the grid structure by measuring the parameters and the material parameters of the grid structure, avoiding the tedious steps of using the finite element method for calculation. The formula given in step S3 is explained below.

[0050] First reference Figure 2The whole machine structure has an opening area, in which a grid structure is arranged. According to the periodic characteristics of the structure, the minimum repeating unit (i.e., unit cell) is determined as follows: Figure 3 In the diamond beam shown in step S1, the grid unit cell size parameters determined include the diagonal dimensions 2a and 2b of the diamond beam, as well as the frame height t and width h of the grid unit. Based on the unit cell characteristics, it can be simplified to an orthotropic material. Since the grid size along the thickness direction is relatively small compared to the in-plane dimensions, there are five independent unit cell material stiffness parameters: the elastic modulus E1 along the x-direction and the Poisson's ratio υ 21 , elastic modulus E2 and Poisson's ratio υ along the y direction 12 , and shear modulus G 12 , and the constitutive relationship satisfies the following formula:

[0051]

[0052] In the above formula, ε1 is the strain along the x direction, ε2 is the strain along the y direction, and γ 12 is the shear strain, σ1 is the stress along the x direction, σ2 is the stress along the y direction, τ 12 is the shear stress. Figure 3 The definitions of various directions are given in the figure, and the size parameters are marked. Specifically, the unit cell finite element model is a rhombus structure, the line AB connecting two opposite vertices of the rhombus is the x direction, and the line CD connecting the other two opposite vertices is the y direction. The distance between the two vertices in the x direction is 2a, and the distance between the two vertices in the y direction is 2b.

[0053] According to the constitutive relationship of the material, by applying a tensile load in the x direction on the unit cell and obtaining its deformation response, the tensile modulus and Poisson's ratio in the x direction can be derived. Correspondingly, by applying a tensile load in the y direction on the unit cell and obtaining its deformation response, the tensile modulus and Poisson's ratio in the y direction can be derived. When the unit cell structure is subjected to tension, Figure 4 As shown, the tensile load F is applied to two points AB in opposite directions and parallel to the line AB. x , a tensile load F is applied to points CD in opposite directions and parallel to the line connecting CD. y According to the symmetry of structure and load, it can be simplified to 1 / 4 beam frame bearing F / 2 tension, such as Figure 5 As shown, there is an unknown symmetrical bending moment M at point A.

[0054] According to the deformation coordination condition, the rotation angle θ of point A can be known A =0, and by the unit load method we can get:

[0055]

[0056] Based on this, the unknown bending moment M is obtained:

[0057]

[0058] The horizontal displacement of point A can be obtained by the unit load method:

[0059]

[0060] Similarly, the vertical displacement of point A can be obtained by the unit load method:

[0061]

[0062] According to the physical meaning of elastic modulus, the tensile and compressive modulus of the x-axis, that is, the tensile and compressive modulus E1 along the diagonal of the long side, is:

[0063]

[0064] Where: △u AB =2u A ,△v CD =2v A .

[0065] Substituting the horizontal and vertical displacements of point A into the formula of the tensile and compressive modulus E1 yields:

[0066]

[0067] Among them, 21 is the Poisson's ratio in the x direction.

[0068] Similarly, when the unit cell is subjected to a tensile load F in the Y direction, the tensile and compressive modulus along the x-axis, that is, the tensile and compressive modulus E2 along the diagonal of the long side, is:

[0069]

[0070] Among them, 12 is the Poisson's ratio in the y direction.

[0071] According to the above formula, the dimensional parameters of the unit cell model are measured in step S1, and the structural material parameters are obtained in step S2, so that the tensile and compressive moduli in two directions can be directly calculated without constructing a finite element model.

[0072] In some optional implementations, in step S1 , the diagonal size of the long side and the diagonal size of the short side of the grid unit are obtained by measurement.

[0073] In some optional embodiments, in step S1, the dimensions of the grid structure are measured and the diagonal dimensions of the long and short sides of the grid cells are calculated based on the number of grid cells in the grid structure. In this embodiment, the long and short sides of the grid structure can be measured separately, and then the lengths of the two diagonals of the grid cells can be calculated based on the number of diamond-shaped grid cells on the long and short sides, respectively. Once the diagonal lengths are determined, the side length L of the grid cells can be determined according to the Pythagorean theorem.

[0074] In some optional embodiments, step S3 further includes:

[0075] Step S4: Optimizing the grid structure according to the tensile and compressive moduli of the grid structure so that the grid structure can resist a set tensile force or compressive force.

[0076] It's understood that the tensile and compressive modulus of a grid structure is a measure of a material's ability to resist deformation under tension and compression. It's defined as the ratio of tensile and compressive stress to strain in the corresponding directions. The greater the tensile and compressive modulus, the greater the material's ability to resist tensile and compressive deformation. Therefore, the grid structure can be optimized based on the calculated results to improve its tensile and compressive resistance.

[0077] In some optional embodiments, in step S4, optimizing the grid structure includes modifying the number of grid units. In an alternative embodiment, optimizing the grid structure includes modifying the shape of the grid units.

[0078] According to the formula, after the material of the grid structure is determined, the elastic modulus E is determined. At this time, the tensile and compressive moduli are related to the size parameters of the grid units. Under the same grid structure size, the diagonal dimensions of the long and short sides of the grid units can be changed by modifying the number of grid units or modifying the shape of the grid units, thereby obtaining a satisfactory tensile and compressive modulus of the grid structure.

[0079] Assuming that the material used for the metal diamond-shaped open grille structure is 7075-T7451, the elastic modulus E of the material used is 70,000 MPa, the dimensional parameters of the grille unit are a=10 mm, b=7 mm, t=1 mm, and h=1.7 mm, the tensile and compressive moduli and Poisson's ratio of the grille structure calculated in step S3 of this application are shown in Table 1 below.

[0080] Table 1 Comparison of calculation results

[0081] <![CDATA[E1 / MPa]]> <![CDATA[E2 / MPa]]> <![CDATA[υ 21 / MPa]]> <![CDATA[υ 12 / MPa]]> This application method 790.13 195.36 1.93 0.48 Finite element method 748.00 185.00 1.93 0.48 difference -5.33％ -5.30％ 0.00％ 0.00％

[0082] As can be seen from the above table, the equivalent modulus calculated by this application is slightly different from the result obtained by finite element calculation. This application can be used to calculate the tensile and compressive modulus of the grid structure and optimize the body structure.

[0083] The second aspect of the present application provides a device for determining the tensile and compressive modulus of a grid structure corresponding to the above method, mainly comprising:

[0084] The grid unit size parameter acquisition module is used to determine the long side diagonal size 2a, the short side diagonal size 2b, and the grid unit beam width h of the grid unit. The grid unit is the smallest repeating unit that constitutes the grid structure. The grid unit is a diamond-shaped beam, and the grid structure is part of the entire machine structure.

[0085] A material parameter acquisition module, configured to acquire the elastic modulus E of the material of the grid structure;

[0086] The grid structure tensile and compressive modulus calculation module is used to determine the tensile and compressive modulus of the grid structure according to the following formula:

[0087] E1=(Eh 3 aL) / (b 3 L 2 +h 2 a 2 b);

[0088] E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a);

[0089] Wherein, E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit.

[0090] In some optional implementations, the grid unit size parameter acquisition module includes:

[0091] The measuring unit is used to obtain the diagonal size of the long side and the diagonal size of the short side of the grid unit by measurement.

[0092] In some optional implementations, the grid unit size parameter acquisition module includes:

[0093] The calculation unit is used to calculate the diagonal size of the long side and the diagonal size of the short side of the grid unit by measuring the size of the grid structure and according to the number of grid units in the grid structure.

[0094] In some optional embodiments, the grid structure tensile and compressive modulus determination device further includes:

[0095] The optimization module is used to optimize the grid structure according to the tensile and compressive moduli of the grid structure so that the grid structure can resist a set tensile force or compressive force.

[0096] In some optional embodiments, in the optimization module, optimizing the grid structure includes modifying the number of grid units.

[0097] In some optional embodiments, in the optimization module, optimizing the grid structure includes modifying the shape of the grid units.

[0098] In a third aspect of the present application, a computer device includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a method for determining the tensile and compressive modulus of a grid structure.

[0099] In a fourth aspect, the present application provides a readable storage medium storing a computer program that, when executed by a processor, implements the method for determining the tensile and compressive moduli of a lattice structure as described above. The computer-readable storage medium may be included in the apparatus described in the above embodiments, or it may exist independently and not incorporated into the apparatus. The computer-readable storage medium carries one or more programs, and when executed by the apparatus, the one or more programs process data according to the method described above.

[0100] Reference below Figure 6 , which shows a structural diagram of a computer device 400 suitable for implementing the embodiments of the present application. Figure 6 The computer device shown is only an example and should not limit the functions and scope of use of the embodiments of the present application.

[0101] like Figure 6 As shown, computer device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage portion 408 into a random access memory (RAM) 403. Various programs and data required for the operation of device 400 are also stored in RAM 403. CPU 401, ROM 402, and RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to bus 404.

[0102] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, and the like; an output section 407 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 408 including a hard disk; and a communication section 409 including a network interface card such as a LAN card or a modem. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as needed. Removable media 411, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 410 as needed, so that computer programs read therefrom can be installed into the storage section 408 as needed.

[0103] In particular, according to the embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 409, and / or installed from the removable medium 411. When the computer program is executed by the central processing unit (CPU) 401, the above functions defined in the method of the present application are executed. It should be noted that the computer storage medium of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, a system, device or component of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code embodied on a computer-readable medium may be transmitted using any suitable medium, including, but not limited to, wireless, wire, optical cable, RF, etc., or any suitable combination thereof.

[0104] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code includes one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0105] The modules or units described in the embodiments of this application may be implemented in software or hardware. The modules or units described may also be provided in a processor, and the names of these modules or units do not, in certain circumstances, limit the modules or units themselves.

[0106] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for determining the tensile and compressive modulus of a grid structure, characterized in that: include: Step S1, determining the long side diagonal dimension 2a, the short side diagonal dimension 2b, and the beam width h of the grid unit, wherein the grid unit is the smallest repeating unit constituting the grid structure, the grid unit is a diamond-shaped beam, and the grid structure is part of the entire machine structure; Step S2: obtaining the elastic modulus E of the material of the grid structure; Step S3: Determine the tensile and compressive modulus of the grid structure according to the following formula: E1=(Eh 3 aL) / (b 3 L 2 +h 2 at 2 b); E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a); Wherein, E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit.

2. The method for determining the tensile and compressive modulus of a grid structure according to claim 1, wherein: In step S1 , the diagonal size of the long side and the diagonal size of the short side of the grid unit are obtained by measurement.

3. The method for determining the tensile and compressive modulus of a grid structure according to claim 1, wherein: In step S1 , the size of the grid structure is measured, and the diagonal size of the long side and the diagonal size of the short side of the grid unit are calculated according to the number of grid units in the grid structure.

4. The method for determining the tensile and compressive modulus of a grid structure according to claim 1, wherein: Step S3 further includes: Step S4: Optimizing the grid structure according to the tensile and compressive moduli of the grid structure so that the grid structure can resist a set tensile force or compressive force.

5. The method for determining the tensile and compressive modulus of a grid structure according to claim 4, wherein: In step S4 , optimizing the grid structure includes modifying the number of grid units.

6. The method for determining the tensile and compressive modulus of a grid structure according to claim 4, wherein: In step S4 , optimizing the grid structure includes modifying the shape of the grid units.

7. A device for determining the tensile and compressive modulus of a grid structure, characterized in that: include: The grid unit size parameter acquisition module is used to determine the long side diagonal size 2a, the short side diagonal size 2b, and the grid unit beam width h of the grid unit. The grid unit is the smallest repeating unit that constitutes the grid structure. The grid unit is a diamond-shaped beam, and the grid structure is part of the entire machine structure. A material parameter acquisition module, configured to acquire the elastic modulus E of the material of the grid structure; The grid structure tensile and compressive modulus calculation module is used to determine the tensile and compressive modulus of the grid structure according to the following formula: E1=(Eh 3 aL) / (b 3 L 2 +h 2 at 2 b); E2=(Eh 3 bL) / (a 3 L 2 +h 2 b 2 a); Wherein, E1 is the tensile and compressive modulus along the long diagonal, E2 is the tensile and compressive modulus along the short diagonal, and L is the side length of the grid unit.

8. The device for determining the tensile and compressive modulus of a grid structure according to claim 7, wherein: The grid unit size parameter acquisition module includes: The measuring unit is used to obtain the diagonal size of the long side and the diagonal size of the short side of the grid unit by measurement.

9. The device for determining the tensile and compressive modulus of a grid structure according to claim 7, wherein: The grid unit size parameter acquisition module includes: The calculation unit is used to calculate the diagonal size of the long side and the diagonal size of the short side of the grid unit by measuring the size of the grid structure and according to the number of grid units in the grid structure.

10. The device for determining the tensile and compressive modulus of a grid structure according to claim 7, wherein: The grid structure tensile and compressive modulus determination device further comprises: The optimization module is used to optimize the grid structure according to the tensile and compressive moduli of the grid structure so that the grid structure can resist a set tensile force or compressive force.

11. The device for determining the tensile and compressive modulus of a grid structure according to claim 10, wherein: In the optimization module, optimizing the grid structure includes modifying the number of grid cells.

12. The device for determining the tensile and compressive modulus of a grid structure according to claim 10, wherein: In the optimization module, optimizing the grid structure includes modifying the shape of the grid cells.

13. A computer device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for determining the tensile and compressive modulus of a grid structure according to any one of claims 1 to 6.

14. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, it is used to implement the method for determining the tensile and compressive modulus of a grid structure according to any one of claims 1 to 6.

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