Finite element analysis method and device for blade disc model, medium and program

Abstract

The invention relates to the technical field of finite element analysis, and particularly provides a blade disc model finite element analysis method and device, a medium and a program.The blade disc model finite element analysis method comprises the following steps that a blade disc model is established, and the volume and mass center coordinates of a single blade are obtained; based on the blade disc model, a first preset position is selected for cutting, splitting is conducted according to rim distribution, and a first cyclic symmetry model is obtained; acquiring node coordinates, radial displacement and axial displacement of each mounting edge of the first cyclic symmetry model based on the first cyclic symmetry model; based on the blade disc model, filling and leveling processing is carried out, a second preset position is selected for cutting, and a second cyclic symmetry model is obtained; and based on the second cyclic symmetry model and the node coordinates, the radial displacement and the axial displacement of each mounting edge, obtaining the stress and the displacement of the blades and the wheel disc of the blade disc model. The calculation accuracy of stress and displacement is ensured, the calculation amount is reduced, and the calculation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of finite element analysis, and particularly relates to a blade disc model finite element analysis method, device, medium and program. BACKGROUND

[0002] The wheel discs of an aero-engine are connected through bolts, and for the finite element calculation of the wheel discs of this type of aero-engine, if a complete model of bolt connection between multiple wheel discs is used, not only is the calculation amount large, but also the calculation is difficult to converge due to the large number of contact states.

[0003] In order to reduce the overall calculation amount, the existing wheel discs of an aero-engine usually use a cyclic symmetry model to perform finite element calculation on the wheel discs of an aero-engine to obtain displacement and stress. However, the cyclic symmetry model requires that there is a large greatest common divisor between the number of blades and the number of bolts of the wheel disc, but in actual situations, there is no large greatest common divisor between the number of blades and the number of bolts of the wheel disc. When the greatest common divisor between the number of blades and the number of bolts of the wheel disc is 2 or 3, even if the cyclic symmetry model is used, only 1 / 2 or 1 / 3 cyclic symmetry model can be used, and the problems of large calculation amount, large number of contact states and difficult convergence of calculation cannot be solved. If a cyclic symmetry model containing a single blade is forcibly used, the problem that the influence of the structures of the bolts, bolt holes, mounting edges and scallop grooves on the stress and deformation of the wheel disc cannot be fully considered, resulting in a large calculation error. SUMMARY

[0004] In view of the above problems, the application provides a blade disc model finite element analysis method, which comprises the following steps: establishing a blade disc model and obtaining the volume and centroid coordinates of a single blade; based on the blade disc model, selecting a first preset position for cutting and splitting according to the rim distribution to obtain a first cyclic symmetry model; based on the first cyclic symmetry model, performing finite element calculation to obtain the node coordinates, radial displacement and axial displacement of each mounting edge of the first cyclic symmetry model; based on the blade disc model, performing filling processing, selecting a second preset position for cutting to obtain a second cyclic symmetry model; based on the second cyclic symmetry model and the node coordinates, radial displacement and axial displacement of each mounting edge, performing finite element calculation to obtain the stress and displacement of the blades and the wheel disc of the blade disc model.

[0005] Further, the step of selecting a first preset position for cutting and splitting according to the rim distribution to obtain a first cyclic symmetry model based on the blade disc model comprises the following steps: A first reference plane is established based on the axis of the blade disc model and two adjacent bolts; A second reference plane is established based on the first reference plane and rotated by a preset angle; A first cyclic symmetry model is obtained by selecting a first preset position between the first reference plane and the second reference plane for cutting and splitting according to the front, middle and rear parts of the rim based on the first reference plane and the second reference plane.

[0006] Further, after the first cyclic symmetry model is obtained by selecting a first preset position for cutting and splitting according to the rim distribution based on the blade disc model, the following steps are provided: The concentrated mass point is obtained based on the first cyclic symmetry model and the volume and centroid coordinates of a single blade; The first cyclic symmetry model is limited based on the concentrated mass point and the middle part of the rim.

[0007] Further, the splitting according to the front, middle and rear parts of the rim includes the following steps: The first cutting plane and the second cutting plane are respectively established based on the rim; The front, middle and rear parts of the rim are obtained by cutting the rim based on the first cutting plane and the second cutting plane.

[0008] Further, the concentrated mass point is obtained by the following formula: m=ρ×V1×a÷n; Wherein, m is the mass of the concentrated mass point, ρ is the material density of the blade disc model, V1 is the volume of a single blade, a is the number of blades of the blade disc model, and n is the number of bolts of the blade disc model.

[0009] Further, the centroid coordinates of a single blade include: The centroid radial coordinate of a single blade and the centroid axial coordinate of a single blade; Wherein, the radial coordinate of the concentrated mass point is the same as the centroid radial coordinate of a single blade; The axial coordinate of the concentrated mass point is the same as the centroid axial coordinate of a single blade; The circumferential coordinate of the concentrated mass point corresponds to the circumferential middle position of the first cyclic symmetry model.

[0010] Further, the node coordinates, radial displacement and axial displacement of each mounting edge of the first cyclic symmetry model are obtained by finite element calculation based on the first cyclic symmetry model, including the following steps: Based on the first cyclic symmetry model, material properties are assigned, mesh is divided, contact and boundary conditions are set, loads are applied, node coordinates of each mounting edge of the first cyclic symmetry model are obtained, finite element calculation is submitted to obtain a first calculation result; Based on the first calculation result, the radial displacement and the axial displacement of each mounting edge of the first cyclic symmetry model are obtained.

[0011] Further, based on the blade disc model, a filling treatment is performed, a second preset position is selected for cutting, and a second cyclic symmetry model is obtained, including the following steps: Based on the blade disc model, the hole structure and the groove structure on the blade disc model are filled; Based on the axis of the blade disc model and the first preset line of the rim, a first curved surface is established; Based on the first curved surface, a second curved surface is formed by rotating a preset angle around the axis of the blade disc model; A second preset position is selected between the first curved surface and the second curved surface for cutting to obtain a second cyclic symmetry model.

[0012] Further, based on the second cyclic symmetry model and the node coordinates, the radial displacement and the axial displacement of each mounting edge, finite element calculation is performed to obtain the stress and displacement of the blade and the disc of the blade disc model, including the following steps: Based on the second cyclic symmetry model, material properties are assigned, mesh is divided, cyclic symmetry is set, and loads are applied; According to the node coordinates of each mounting edge, the radial displacement and the axial displacement of each mounting edge are interpolated to each mounting surface of the second cyclic symmetry model, and the circumferential displacement of each mounting surface of the second cyclic symmetry model is set to zero, finite element calculation is submitted, and a second calculation result is obtained; Based on the second calculation result, the stress and displacement of the blade and the disc are obtained.

[0013] An electronic device based on the same concept, comprising: at least one processor and at least one memory, the memory being in data connection with the processor; The memory stores instructions executable by at least one processor, and the instructions are executed by at least one processor, so that the at least one processor can execute the blade disc model finite element analysis method described in any one of the embodiments.

[0014] A computer storage medium based on the same concept, the computer storage medium stores one or more instructions; When executed by one or more processors, the instructions cause one or more processors to perform the finite element analysis method for the blade disk model described in any of the above specific embodiments.

[0015] A computer program product based on the same concept, wherein the computer program product stores at least one computer program, which is loaded and executed by a processor, enabling the processor to perform the finite element analysis method for the blade disk model described in any of the above specific embodiments.

[0016] Compared with existing technologies, the finite element analysis method for the blade disk model of the present invention has at least the following advantages: By establishing a first cyclic symmetric model, the displacement of each mounting edge of the first cyclic symmetric model is calculated using finite element analysis. Then, by establishing a second cyclic symmetric model, the displacement of each mounting edge obtained based on the first cyclic symmetric model is used as the displacement boundary, and the stress and displacement of the blade disk model are calculated using finite element analysis. This not only avoids the large errors in the stress and displacement calculation results caused by the simplification of cyclic symmetric models containing individual blades, but also avoids the problems of large computational load, numerous contact states, and difficulty in convergence caused by complete models with bolted connections between multiple disks or large cyclic symmetric models. While ensuring the accuracy of the stress and displacement calculation results, it greatly reduces the overall computational load and improves computational efficiency.

[0017] The electronic device of the present invention, since it is used to perform the finite element analysis method for the blade disk model as described above, has the same beneficial effects as the finite element analysis method for the blade disk model described above, and therefore will not be described again here.

[0018] The computer storage medium of the present invention, being used to implement the finite element analysis method for the blade disk model as described above, has the same beneficial effects as the finite element analysis method for the blade disk model described above, and therefore will not be repeated here.

[0019] The computer program product of the present invention is used to execute the finite element analysis method for the blade disk model as described above, and therefore has the same beneficial effects as the finite element analysis method for the blade disk model as described above. Therefore, it will not be described again here.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the finite element analysis method for the blade disk model in an embodiment of the present invention is shown; Figure 2 A schematic diagram of a blade disk model in an embodiment of the present invention is shown; Figure 3 A schematic diagram of the first cyclic symmetric model in an embodiment of the present invention is shown; Figure 4 A schematic diagram of each mounting edge of the first cyclic symmetric model in an embodiment of the present invention is shown; Figure 5 A schematic diagram of the second cyclic symmetric model in an embodiment of the present invention is shown.

[0023] In the diagram, 100 represents the blade disk model; 200 represents the first cycle symmetry model; 210 represents the mounting edge; and 300 represents the second cycle symmetry model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of 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, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Reference Figure 1 and Figure 2This invention provides a finite element analysis method for a blade disk model, comprising the following steps: establishing a blade disk model 100 and obtaining the volume and centroid coordinates of a single blade; based on the blade disk model 100, selecting a first preset position for cutting and splitting according to the rim distribution to obtain a first cyclic symmetric model 200; based on the first cyclic symmetric model 200, performing finite element calculations to obtain the node coordinates, radial displacement, and axial displacement of each mounting edge 210 of the first cyclic symmetric model 200; based on the blade disk model 100, performing a leveling process and selecting a second preset position for cutting to obtain a second cyclic symmetric model 300; based on the second cyclic symmetric model 300 and the node coordinates, radial displacement, and axial displacement of each mounting edge 210, performing finite element calculations to obtain the stress and displacement of the blades and disk of the blade disk model 100.

[0026] Specifically, a blade disk model 100 is established, and the model is first cut along its rim, dividing it into blades and a disk. Any blade is selected for measurement to obtain its volume and centroid coordinates. Then, the model is cut a second time at a first preset position, and its components are disassembled according to the rim distribution, thus establishing the first cyclic symmetry model 200. Pre-processing for finite element analysis yields the node coordinates of each mounting edge 210 of the first cyclic symmetry model 200. Finite element analysis is then used to calculate the stress and displacement of each mounting edge 210, as well as the radial and axial displacements of the disk. Finally, the blade disk model 100 is leveled and cut a third time at a second preset position, thus establishing the second cyclic symmetry model 300. In this process, while establishing the second cyclic symmetric model 300, the displacement of each mounting edge 210 obtained based on the first cyclic symmetric model 200 is used as the displacement boundary. Finite element analysis is then used to obtain the stress and displacement of the blades and disks of the blade disk model 100. This not only avoids the large errors in stress and displacement calculations caused by simplification in cyclic symmetric models containing individual blades, but also avoids the problems of large computational load, numerous contact states, and difficulty in convergence caused by complete models with bolted connections between multiple disks or large cyclic symmetric models. While ensuring the accuracy of the stress and displacement calculation results, the overall computational load is greatly reduced, improving computational efficiency.

[0027] In some specific embodiments of the present invention, reference is made to... Figure 2 and Figure 3Based on the blade disk model 100, a first preset position is selected for cutting, and the model is split according to the rim distribution to obtain a first cyclic symmetric model 200. This includes the following steps: Establishing a first reference plane based on the axis of the blade disk model 100 and two adjacent bolts; establishing a second reference plane by rotating it by a preset angle based on the first reference plane; and selecting a first preset position between the first and second reference planes for cutting, and splitting the model according to the front, middle, and rear portions of the rim to obtain the first cyclic symmetric model 200.

[0028] Specifically, a first reference plane is established by means of the axis of the blade disk model 100 and the midpoint between two adjacent bolt positions on the blade disk model 100. Then, the first reference plane is rotated by a preset angle along the axis of the blade disk model 100 to obtain a second reference plane. The blade disk model 100 and each sequentially arranged connecting part are cut according to the first preset position using the first and second reference planes, and then disassembled according to the front, middle, and rear parts of the rim to obtain the first cyclic symmetrical model 200.

[0029] Furthermore, the position between the first reference plane and the second reference plane is the first preset position. The preset angle of rotation of the first reference plane is 360° / n, where n is the number of bolts between the blade disk model 100 and each sequentially arranged connecting part.

[0030] In some specific embodiments of the present invention, based on the blade disk model 100, a first preset position is selected for cutting, and the model is split according to the rim distribution to obtain a first cyclic symmetry model 200. The following steps are then performed: Based on the first cyclic symmetry model 200 and the volume and centroid coordinates of a single blade, a concentrated mass point is obtained. Based on the concentrated mass point, it is associated with the middle of the rim to define the first cyclic symmetry model 200.

[0031] Specifically, the volume and centroid coordinates of the first cyclic symmetric model 200 and a single blade are imported into finite element analysis software, such as ANSYS Workbench. Finite element preprocessing is performed in the software to establish lumped mass points. After establishing the lumped mass points, they are associated with the center of the split rim to constrain the first cyclic symmetric model 200.

[0032] In some specific embodiments of the present invention, the rim is divided into a front portion, a middle portion, and a rear portion, including the following steps: Based on the rim, a first cutting plane and a second cutting plane are established respectively. Based on the first cutting plane and the second cutting plane, the rim is cut to obtain the front portion, the middle portion, and the rear portion of the rim.

[0033] Specifically, a first cutting plane and a second cutting plane are established according to the rim surface of the rim. The rim is cut according to the positions of the first cutting plane and the second cutting plane. Each part is disassembled as needed to obtain the front, middle and rear parts of the rim.

[0034] In some specific embodiments of the present invention, the concentrated mass point is obtained by the following formula: m = ρ × V1 × a ÷ n. Wherein, m is the mass of the concentrated mass point, ρ is the material density of the blade disk model 100, V1 is the volume of a single blade, a is the number of blades in the blade disk model 100, and n is the number of bolts in the blade disk model 100.

[0035] Specifically, by substituting the material density of the blade disk model 100, the volume of a single blade, the number of blades in the blade disk model 100, and the number of bolts in the blade disk model 100 into the above formula, the mass of the concentrated mass point can be obtained. Here, the material density of the blade disk model 100, the volume of a single blade, the number of blades in the blade disk model 100, and the number of bolts in the blade disk model 100 are all deterministic parameters to ensure the accuracy of establishing the concentrated mass point.

[0036] In some specific embodiments of the present invention, the centroid coordinates of a single blade include: the radial coordinates of the centroid of the single blade and the axial coordinates of the centroid of the single blade. The radial coordinates of the concentrated mass point are the same as the radial coordinates of the centroid of the single blade. The axial coordinates of the concentrated mass point are the same as the axial coordinates of the centroid of the single blade. The circumferential coordinates of the concentrated mass point correspond to the circumferential midpoint of the first cyclic symmetric model 200.

[0037] Specifically, the centroid coordinates of a single blade include both radial and axial coordinates. The radial coordinates of the concentrated mass point are the same as the radial coordinates of the centroid of the single blade. The axial coordinates of the concentrated mass point are the same as the axial coordinates of the centroid of the single blade. The circumferential coordinates of the concentrated mass point correspond to the midpoint of the circumferential direction of the first cyclic symmetry model 200. By associating the concentrated mass point with the centroid coordinates of the first cyclic symmetry model 200 and the single blade, the accuracy of establishing the concentrated mass point can be ensured.

[0038] In some specific embodiments of the present invention, reference is made to... Figure 3 and Figure 4Based on the first cyclic symmetric model 200, finite element analysis is performed to obtain the node coordinates, radial displacement, and axial displacement of each mounting edge 210 of the first cyclic symmetric model 200. This includes the following steps: assigning material properties, meshing, setting contact and boundary conditions, applying loads based on the first cyclic symmetric model 200, obtaining the node coordinates of each mounting edge 210 of the first cyclic symmetric model 200, submitting the calculation, and obtaining the first calculation result. Based on the first calculation result, the radial displacement and axial displacement of each mounting edge 210 of the first cyclic symmetric model 200 are obtained.

[0039] Specifically, the first cyclic symmetric model 200 undergoes preprocessing including assigning material properties, meshing, setting contact and boundary conditions, and applying loads. Meshing obtains the node coordinates of each mounting edge 210 of the first cyclic symmetric model 200. The calculation is submitted, and the results are read to obtain the first calculation result. This first calculation result includes parameter data such as stress and displacement of each mounting edge 210 of the first cyclic symmetric model 200, stress on the radial surface of the wheel, and stress on the cylindrical surface of the wheel. The radial and axial displacements of each mounting edge 210 of the first cyclic symmetric model 200 can be extracted from the first calculation result, providing an operational basis for subsequent operations using the displacements of each mounting edge 210 obtained from the first cyclic symmetric model 200 as displacement boundaries.

[0040] It should be noted that mesh generation is a preprocessing step in finite element analysis. Once this step is completed, the corresponding node coordinate information can be obtained.

[0041] In some specific embodiments of the present invention, reference is made to... Figure 5 Based on the blade disk model 100, a leveling process is performed, and a second preset position is selected for cutting to obtain a second cyclic symmetric model 300. This includes the following steps: Leveling the hole and groove structures on the blade disk model 100; establishing a first surface based on the axis and the first preset line of the rim of the blade disk model 100; rotating the first surface around the axis of the blade disk model 100 by a preset angle to form a second surface; and cutting at a second preset position between the first and second surfaces to obtain the second cyclic symmetric model 300.

[0042] Specifically, the bolt holes and grooves on the blade disk model 100 are filled in. A first curved surface is created using the axis and a first preset line of the rim of the blade disk model 100. This first preset line can be designed according to actual needs; for example, it can be a curved line or a straight line. The first curved surface is rotated around the axis of the blade disk model 100 by a preset angle to obtain a second curved surface. The blade disk model 100 is then cut using the first and second curved surfaces at a second preset position to obtain the second cyclically symmetrical model 300.

[0043] Furthermore, the position between the first surface and the second surface is the second preset position. The preset angle of rotation of the first surface is 360° / y×z, where y is the number of blades in the blade disk model 100, z is the number of blades in the second cyclic symmetric model 300, and z is a factor of y, usually z=1. Both are deterministic parameters.

[0044] In some specific embodiments of the present invention, finite element analysis is performed based on the node coordinates, radial displacement, and axial displacement of the second cyclic symmetric model 300 and each mounting edge 210 to obtain the stress and displacement of the blades and disk of the blade disk model 100. This includes the following steps: assigning material properties, meshing, setting cyclic symmetry, and applying loads based on the second cyclic symmetric model 300. According to the node coordinates of each mounting edge 210, the radial and axial displacements of each mounting edge 210 are interpolated to each mounting surface of the second cyclic symmetric model 300, and the circumferential displacement of each mounting surface of the second cyclic symmetric model 300 is set to zero. Finite element analysis is then performed, and a second calculation result is obtained. Based on the second calculation result, the stress and displacement of the blades and disk are obtained.

[0045] Specifically, the nodal coordinates, radial displacement, and axial displacement of each mounting edge 210 of the second cyclic symmetric model 300 and the first cyclic symmetric model 200 are imported into finite element analysis software, such as ANSYS Workbench. Preprocessing is performed on the second cyclic symmetric model 300, including assigning material properties, meshing, setting cyclic symmetry, and applying loads. Based on the nodal coordinates of each mounting edge 210, the radial and axial displacements of each mounting edge 210 obtained from the first cyclic symmetric model 200 are interpolated onto each mounting surface of the second cyclic symmetric model 300. Simultaneously, the circumferential displacement of each mounting surface of the second cyclic symmetric model 300 is set to zero. The calculation is then submitted, and the results are read to obtain the second calculation result. This second calculation result includes parameter data such as stress and displacement of the blades and disk of the blade disk model 100. By reading the second calculation result and performing post-processing, the stress and displacement of the blades and disk can be obtained.

[0046] Verification example: Verification was performed using general-purpose finite element analysis software, including the following four analysis methods: Table 1. Brief description of the four analytical methods

[0047] The statistical results of displacement and stress calculations using the above four analysis methods are as follows: Table 2. Statistical table of displacement and stress calculation results for the four analysis methods.

[0048] As can be seen from the above, the disadvantage of the second and third analysis methods is that the calculation results of displacement and stress have large errors. However, the fourth analysis method, namely the finite element analysis method of the blade disk model provided in the embodiment of the present invention, has smaller errors in the calculation results of displacement and stress, with the absolute value of the relative error being within 1%. It can reduce the overall calculation workload and improve the calculation efficiency while ensuring the accuracy of the stress and displacement calculation results.

[0049] This invention provides an electronic device, including at least one processor and at least one memory, wherein the memory is data-connected to the processor. The memory stores instructions executable by at least one of the processors, and the instructions, when executed by at least one of the processors, enable the at least one processor to perform the finite element analysis method for the blade disk model described in any of the above specific embodiments.

[0050] This invention provides a computer storage medium storing one or more instructions. When executed by one or more processors, these instructions cause the processors to perform the finite element analysis method for the blade disk model described in any of the above embodiments.

[0051] This invention provides a computer program product that stores at least one computer program, which is loaded and executed by a processor, enabling the processor to perform the finite element analysis method for the blade disk model described in any of the above specific embodiments.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A finite element analysis method for a blade disk model, characterized in that, Includes the following steps: Establish a blade disk model (100) and obtain the volume and centroid coordinates of a single blade; Based on the blade disk model (100), a first preset position is selected for cutting, and the model is split according to the rim distribution to obtain a first cyclic symmetric model (200); Based on the first cyclic symmetric model (200), finite element calculations are performed to obtain the node coordinates, radial displacement, and axial displacement of each mounting edge (210) of the first cyclic symmetric model (200). Based on the blade disk model (100), a leveling process is performed, and a second preset position is selected for cutting to obtain a second cyclic symmetric model (300); Based on the second cyclic symmetric model (300) and the node coordinates, radial displacement and axial displacement of each of the mounting edges (210), finite element calculations are performed to obtain the stress and displacement of the blades and disk of the blade disk model (100).

2. The finite element analysis method for the blade disk model according to claim 1, characterized in that, The process of selecting a first preset position for cutting based on the blade disk model (100) and splitting it according to the rim distribution to obtain a first cyclic symmetric model (200) includes the following steps: Based on the axis of the blade disk model (100) and two adjacent bolts, a first reference plane is established; Based on the first reference plane, rotate by a preset angle to establish a second reference plane; Based on the first reference plane and the second reference plane, a first preset position is selected between the first reference plane and the second reference plane for cutting, and the wheel rim is split according to the front, middle and rear parts to obtain the first cyclic symmetric model (200).

3. The finite element analysis method for the blade disk model according to claim 2, characterized in that, After selecting a first preset position for cutting based on the blade disk model (100), and splitting it according to the rim distribution to obtain the first cyclic symmetric model (200), the following steps are set: Based on the first cyclic symmetric model (200) and the volume and centroid coordinates of a single blade, the concentrated mass point is obtained; Based on the concentrated mass point and its association with the middle part of the rim, the first cyclic symmetric model (200) is defined.

4. The finite element analysis method for the blade disk model according to claim 2, characterized in that, The process of splitting the wheel rim into its front, middle, and rear portions includes the following steps: Based on the wheel rim, a first cutting plane and a second cutting plane are established respectively; Based on the first cutting plane and the second cutting plane, the rim is cut to obtain the front, middle and rear portions of the rim.

5. The finite element analysis method for the blade disk model according to claim 3, characterized in that, The concentrated mass point is obtained using the following formula: m = ρ × V1 × a ÷ n; Where m is the mass of the concentrated mass point, ρ is the material density of the blade disk model (100), V1 is the volume of a single blade, a is the number of blades in the blade disk model (100), and n is the number of bolts in the blade disk model (100).

6. The finite element analysis method for the blade disk model according to claim 3, characterized in that, The centroid coordinates of a single blade include: The radial coordinate of the centroid of a single blade and the axial coordinate of the centroid of a single blade; Wherein, the radial coordinate of the concentrated mass point is the same as the radial coordinate of the centroid of a single blade; The axial coordinate of the concentrated mass point is the same as the axial coordinate of the center of mass of a single blade; The circumferential coordinates of the concentrated mass point correspond to the circumferential midpoint of the first cyclic symmetric model (200).

7. The finite element analysis method for the blade disk model according to claim 1, characterized in that, The step of performing finite element analysis based on the first cyclic symmetric model (200) to obtain the node coordinates, radial displacement, and axial displacement of each mounting edge (210) of the first cyclic symmetric model (200) includes the following steps: Based on the first cyclic symmetric model (200), material properties are assigned, meshes are generated, contact and boundary conditions are set, loads are applied, the node coordinates of each mounting edge (210) of the first cyclic symmetric model (200) are obtained, and finite element calculation is submitted to obtain the first calculation result; Based on the first calculation result, the radial displacement and axial displacement of each mounting edge (210) of the first cyclic symmetric model (200) are obtained.

8. The finite element analysis method for the blade disk model according to claim 1, characterized in that, The process of leveling the blade disk model (100), selecting a second preset position for cutting, and obtaining a second cyclic symmetric model (300) includes the following steps: Based on the blade disk model (100), fill in the hole structure and groove structure on the blade disk model (100); Based on the axis of the blade disk model (100) and the first preset line of the rim, a first curved surface is established; Based on the first curved surface, a second curved surface is formed by rotating the blade disk model (100) by a preset angle around its axis; A second preset position is selected between the first surface and the second surface for cutting to obtain a second cyclic symmetric model (300).

9. The finite element analysis method for the blade disk model according to claim 1, characterized in that, The step of performing finite element analysis based on the node coordinates, radial displacement, and axial displacement of the second cyclic symmetric model (300) and each of the mounting edges (210) to obtain the stress and displacement of the blades and disk of the blade disk model (100) includes the following steps: Based on the second cyclic symmetric model (300), material properties are assigned, meshes are generated, cyclic symmetry is set, and loads are applied. Based on the node coordinates of each mounting edge (210), the radial and axial displacements of each mounting edge (210) are interpolated to each mounting surface of the second cyclic symmetric model (300), and the circumferential displacement of each mounting surface of the second cyclic symmetric model (300) is set to zero. Finite element calculation is then performed and a second calculation result is obtained. Based on the second calculation result, the stress and displacement of the blade and the disk are obtained.

10. An electronic device, characterized in that, include: At least one processor and at least one memory, wherein the memory is data-connected to the processor; The memory stores instructions that can be executed by at least one of the processors, and the instructions are executed by at least one of the processors to enable the at least one of the processors to perform the finite element analysis method for the blade disk model according to any one of claims 1 to 9.

11. A computer storage medium, characterized in that, The computer storage medium stores one or more instructions; When executed by one or more processors, the instructions cause one or more processors to perform the finite element analysis method for the blade disk model as described in any one of claims 1 to 9.

12. A computer program product, characterized in that, The computer program product stores at least one computer program, which is loaded and executed by a processor, enabling the processor to perform the finite element analysis method for the blade disk model according to any one of claims 1 to 9.

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