A method for constructing a heat source model for electron beam welding of aluminum alloys

Abstract

The present invention provides a method for constructing a heat source model for aluminum alloy electron beam welding, the method comprising: S10, establishing a three-dimensional finite element mesh model of an aluminum alloy electron beam welded structure; S20, establishing a three-dimensional combined initial heat source model of the aluminum alloy electron beam welded structure based on the three-dimensional finite element mesh model; S30, obtaining a welding temperature field of the aluminum alloy electron beam welded structure; S40, determining whether the welding temperature field of the aluminum alloy electron beam welded structure is consistent with the actual weld morphology; if so, proceeding to S50; otherwise, proceeding to S60; S50, using the three-dimensional combined initial heat source model of the aluminum alloy electron beam welded structure as a final heat source model of the aluminum alloy electron beam welded structure; S60, adjusting corresponding parameters in the three-dimensional combined initial heat source model according to non-conforming factors, and proceeding to S20. The present invention can solve the technical problem of the prior art in being unable to obtain a heat source model that accurately simulates the morphology of aluminum alloy electron beam welds.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy welding, and in particular to a method for constructing a heat source model for aluminum alloy electron beam welding. Background Art

[0002] Aluminum alloys are widely used in aerospace, automotive, and rail transportation due to their low density, high specific strength, and stiffness. However, aluminum alloys have high thermal conductivity and thermal expansion coefficients. To minimize post-weld distortion and improve weld quality, high-energy-density electron beam welding is often used.

[0003] Currently, due to the complex shapes of product components and the large number of welds involved, relying on experimental methods for design and product manufacturing is time-consuming and costly. Furthermore, the temperature and stress distributions at key locations within components during welding are difficult to measure experimentally. With the development of numerical simulation technology, welding numerical simulation can more accurately simulate the temperature, residual stress, and welding deformation during welding. This can be used to guide the optimization of process parameters during design and product manufacturing, effectively saving costs, shortening development cycles, and improving product competitiveness. Therefore, using numerical simulation technology to study the electron beam welding process for aluminum alloys has important practical significance for engineering practice.

[0004] The foundation of numerical welding simulation is to establish an appropriate heat source model based on the welding heat source form and molten pool shape. This heat source model can best reflect the physical phenomena during the welding process. Currently, aluminum alloy electron beam welds have a long, conical shape, which is difficult to describe using the Gaussian surface heat source model and double ellipsoid heat source model provided by finite element software. Summary of the Invention

[0005] The present invention provides a method for constructing a heat source model for electron beam welding of aluminum alloys, which can solve the technical problem that the prior art cannot obtain a heat source model that accurately simulates the morphology of aluminum alloy electron beam welds.

[0006] According to one aspect of the present invention, a method for constructing a heat source model for electron beam welding of aluminum alloys is provided, the method comprising:

[0007] S10. Establish a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure;

[0008] S20. Establishing a three-dimensional combined initial heat source model of the aluminum alloy electron beam welding structure based on the three-dimensional finite element mesh model;

[0009] S30, embedding the three-dimensional combined initial heat source model into the three-dimensional finite element mesh model to obtain the welding temperature field of the aluminum alloy electron beam welded structure;

[0010] S40, comparing the welding temperature field of the aluminum alloy electron beam welded structure with the actual weld morphology to determine whether the welding temperature field of the aluminum alloy electron beam welded structure is consistent with the actual weld morphology; if so, proceed to S50; otherwise, proceed to S60;

[0011] S50, using the three-dimensional combined initial heat source model of the aluminum alloy electron beam welded structure as the final heat source model of the aluminum alloy electron beam welded structure;

[0012] S60, adjusting the corresponding parameters in the three-dimensional combined initial heat source model according to the inconsistent factors, and going to S20.

[0013] Preferably, in S20, a three-dimensional combined initial heat source model of the aluminum alloy electron beam welding structure is established by the following formula:

[0014] q(x,y,z,t)=q s (x,y,z,t)+q c (x,y,z,t);

[0015] in,

[0016]

[0017]

[0018] Where q(x,y,z,t) represents the heat flux density of the three-dimensional combined heat source, q s (x, y, z, t) represents the heat flux density of the surface heat source, q c (x, y, z, t) represents the heat flux density of the body heat source, x, y, z represent the x-axis, y-axis, and z-axis coordinates in the three-dimensional finite element mesh model respectively; t represents the welding time, Q s represents the power of the surface heat source, r represents the effective radius of the surface heat source, v represents the welding speed, Q c represents the power of the body heat source, H represents the depth of the body heat source, r e represents the radius of the upper surface of the body heat source, r i represents the radius of the lower surface of the body heat source, r0(z) represents the function of the radius of the body heat source in the depth direction, z e Represents the z-axis coordinate of the upper surface of the body heat source, z i Represents the z-axis coordinate of the lower surface of the body heat source.

[0019] Preferably, in S60, adjusting corresponding parameters in the three-dimensional combined initial heat source model according to the inconsistency factors includes:

[0020] S61. If the discrepancy factor is weld penetration, adjust the depth of the body heat source;

[0021] S62. When the non-conforming factor is the weld width in the middle of the weld, adjust the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source;

[0022] S63. When the inconsistent factor is the weld top width, adjust the effective radius of the surface heat source.

[0023] Preferably, in S61, when the inconsistent factor is weld penetration, adjusting the depth of the body heat source includes:

[0024] S611. When the weld penetration depth indicated by the welding temperature field of the aluminum alloy electron beam welded structure is less than the actual weld penetration depth, increase the depth of the body heat source;

[0025] S612. When the weld penetration depth represented by the welding temperature field of the aluminum alloy electron beam welded structure is greater than the actual weld penetration depth, reduce the depth of the body heat source.

[0026] Preferably, in S62, when the inconsistent factor is the weld width in the middle of the weld, adjusting the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source includes:

[0027] S621. When the weld width in the middle of the weld represented by the welding temperature field of the aluminum alloy electron beam welded structure is smaller than the actual weld width in the middle of the weld, simultaneously increase the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source;

[0028] S622. When the middle weld width represented by the welding temperature field of the aluminum alloy electron beam welded structure is larger than the middle weld width of the actual weld, the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source are simultaneously reduced.

[0029] Preferably, in S63, when the inconsistent factor is the weld top weld width, adjusting the effective radius of the surface heat source includes:

[0030] S631. When the weld top width indicated by the welding temperature field of the aluminum alloy electron beam welded structure is smaller than the actual weld top width, increase the effective radius of the surface heat source;

[0031] S632. When the top molten width of the weld represented by the welding temperature field of the aluminum alloy electron beam welded structure is larger than the top molten width of the actual weld, reduce the effective radius of the surface heat source.

[0032] Preferably, in S10, establishing a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure includes:

[0033] S11. Establish a geometric model of the aluminum alloy electron beam welding structure;

[0034] S12. Meshing the geometric model of the aluminum alloy electron beam welded structure to obtain a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure;

[0035] In the meshing process, the meshes in the weld area and the area close to the weld are refined, and the meshes in the area far from the weld are coarsened.

[0036] According to another aspect of the present invention, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above methods when executing the computer program.

[0037] Using the technical solution of the present invention, a three-dimensional finite element mesh model and a three-dimensional combined initial heat source model of an aluminum alloy electron beam welded structure are first established. The three-dimensional combined initial heat source model is then embedded into the three-dimensional finite element mesh model to obtain the welding temperature field of the aluminum alloy electron beam welded structure. The welding temperature field of the aluminum alloy electron beam welded structure is then compared with the actual weld morphology. Finally, a final heat source model of the aluminum alloy electron beam welded structure is obtained based on the comparison results. The heat source model constructed using the method of the present invention can accurately simulate the morphology of the aluminum alloy electron beam weld. At the same time, the temperature field calculated based on the heat source model can provide relatively accurate input for the calculation of welding stress and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are included to provide a further understanding of the embodiments of the present invention, constitute a part of the specification, illustrate the embodiments of the present invention, and together with the description, explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0039] Figure 1 A flow chart showing a method for constructing a heat source model for electron beam welding of aluminum alloys according to an embodiment of the present invention is shown;

[0040] Figure 2 A schematic diagram of a three-dimensional finite element mesh model for electron beam welding of aluminum alloys provided according to an embodiment of the present invention is shown;

[0041] Figure 3 A schematic diagram of a combined heat source model for electron beam welding of aluminum alloys according to an embodiment of the present invention is shown;

[0042] Figure 4 A comparison diagram of the cross-sectional morphology of a weld simulated by a heat source model provided according to an embodiment of the present invention and an actual weld is shown. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0046] like Figure 1 As shown, the present invention provides a method for constructing a heat source model for electron beam welding of aluminum alloys, the method comprising:

[0047] S10. Establish a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure;

[0048] S20. Establishing a three-dimensional combined initial heat source model of the aluminum alloy electron beam welding structure based on the three-dimensional finite element mesh model;

[0049] S30, embedding the three-dimensional combined initial heat source model into the three-dimensional finite element mesh model to obtain the welding temperature field of the aluminum alloy electron beam welded structure;

[0050] S40, comparing the welding temperature field of the aluminum alloy electron beam welded structure with the actual weld morphology to determine whether the welding temperature field of the aluminum alloy electron beam welded structure is consistent with the actual weld morphology; if so, proceed to S50; otherwise, proceed to S60;

[0051] S50, using the three-dimensional combined initial heat source model of the aluminum alloy electron beam welded structure as the final heat source model of the aluminum alloy electron beam welded structure;

[0052] S60, adjusting the corresponding parameters in the three-dimensional combined initial heat source model according to the inconsistent factors, and going to S20.

[0053] The present invention first establishes a three-dimensional finite element mesh model and a three-dimensional combined initial heat source model for an aluminum alloy electron beam welded structure. The three-dimensional combined initial heat source model is then embedded into the three-dimensional finite element mesh model to obtain the welding temperature field of the aluminum alloy electron beam welded structure. The welding temperature field of the aluminum alloy electron beam welded structure is then compared with the actual weld morphology. Finally, based on the comparison results, a final heat source model of the aluminum alloy electron beam welded structure is obtained. The heat source model constructed using the method of the present invention can accurately simulate the morphology of aluminum alloy electron beam welds. Furthermore, the temperature field calculated based on the heat source model can provide relatively accurate input for calculating welding stress and deformation.

[0054] According to one embodiment of the present invention, in S10, establishing a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure includes:

[0055] S11. Establish a geometric model of the aluminum alloy electron beam welding structure;

[0056] S12. Mesh the geometric model of the aluminum alloy electron beam welded structure to obtain a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure. The model schematic diagram is shown in FIG. Figure 2 As shown;

[0057] In the meshing process, the meshes of the weld area and the area near the weld are refined, and the meshes of the area far from the weld are coarsened, thereby improving the calculation accuracy and efficiency.

[0058] According to one embodiment of the present invention, in S20, a three-dimensional combined initial heat source model of the aluminum alloy electron beam welding structure is established by the following formula, and the model schematic diagram is as follows: Figure 3 As shown:

[0059] q(x,y,z,t)=q s (x,y,z,t)+q c (x,y,z,t);

[0060] in,

[0061]

[0062]

[0063] Where q(x,y,z,t) represents the heat flux density of the three-dimensional combined heat source, q s (x, y, z, t) represents the heat flux density of the surface heat source, q c (x, y, z, t) represents the heat flux density of the body heat source, x, y, z represent the x-axis, y-axis, and z-axis coordinates in the three-dimensional finite element mesh model respectively; t represents the welding time, Q s represents the power of the surface heat source, r represents the effective radius of the surface heat source, v represents the welding speed, Q c represents the power of the body heat source, H represents the depth of the body heat source, r e represents the radius of the upper surface of the body heat source, r i represents the radius of the lower surface of the body heat source, r0(z) represents the function of the radius of the body heat source in the depth direction, z e Represents the z-axis coordinate of the upper surface of the body heat source, z i Represents the z-axis coordinate of the lower surface of the body heat source.

[0064] In this embodiment, the three-dimensional combined initial heat source model is a composite heat source model of a Gaussian surface heat source and a conical heat source. This model can more accurately simulate the morphology of aluminum alloy electron beam welds with high simulation accuracy.

[0065] According to one embodiment of the present invention, in S30 of the present invention, material parameters such as density, thermal conductivity, specific heat and latent heat of the aluminum alloy, as well as thermal boundary conditions of thermal convection and thermal radiation of the test piece are set to obtain the welding temperature field of the aluminum alloy electron beam welding structure.

[0066] According to one embodiment of the present invention, the actual weld morphology in S40 is obtained by the following method:

[0067] S41. Prepare aluminum alloy electron beam welding test pieces: Use 5083 aluminum alloy as the welding base material, and the penetration depth of the butt weld is greater than 8 mm. Before welding, clean the surface of the aluminum alloy test piece with acetone and alcohol. Welding is performed using an electron beam welder with welding process parameters of 140 kV voltage, 22 mA current, and 13 mm / s welding speed.

[0068] S42. The middle part of the weld of the aluminum alloy electron beam welded specimen was cut by wire cutting. After polishing and etching, the macroscopic morphology of the aluminum alloy electron beam weld was photographed using a microscope for welding simulation comparison and verification.

[0069] In this embodiment, the comparison between the welding temperature field and the actual weld morphology of the aluminum alloy electron beam welded structure is shown in FIG. Figure 4 As shown. Figure 4 In the simulation, the welding temperature field of the aluminum alloy electron beam welded structure is consistent with the actual weld morphology, so the heat source model can accurately simulate the aluminum alloy electron beam weld morphology.

[0070] According to an embodiment of the present invention, in S60, adjusting corresponding parameters in the three-dimensional combined initial heat source model according to the inconsistency factor includes:

[0071] S61. If the discrepancy factor is weld penetration, adjust the depth of the body heat source;

[0072] S62. When the non-conforming factor is the weld width in the middle of the weld, adjust the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source;

[0073] S63. When the inconsistent factor is the weld top width, adjust the effective radius of the surface heat source.

[0074] Furthermore, in S61, when the inconsistent factor is weld penetration, adjusting the depth of the body heat source includes:

[0075] S611. When the weld penetration depth indicated by the welding temperature field of the aluminum alloy electron beam welded structure is less than the actual weld penetration depth, increase the depth of the body heat source;

[0076] S612. When the weld penetration depth represented by the welding temperature field of the aluminum alloy electron beam welded structure is greater than the actual weld penetration depth, reduce the depth of the body heat source.

[0077] Furthermore, in S62, when the inconsistent factor is the weld width in the middle of the weld, adjusting the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source includes:

[0078] S621. When the weld width in the middle of the weld represented by the welding temperature field of the aluminum alloy electron beam welded structure is smaller than the actual weld width in the middle of the weld, simultaneously increase the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source;

[0079] S622. When the middle weld width represented by the welding temperature field of the aluminum alloy electron beam welded structure is larger than the middle weld width of the actual weld, the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source are simultaneously reduced.

[0080] Furthermore, in S63, when the non-compliant factor is the weld top weld width, adjusting the effective radius of the surface heat source includes:

[0081] S631. When the weld top width indicated by the welding temperature field of the aluminum alloy electron beam welded structure is smaller than the actual weld top width, increase the effective radius of the surface heat source;

[0082] S632. When the top molten width of the weld represented by the welding temperature field of the aluminum alloy electron beam welded structure is larger than the top molten width of the actual weld, reduce the effective radius of the surface heat source.

[0083] In summary, the heat source model construction method of the present invention has the following beneficial effects:

[0084] 1. During the meshing process of the 3D finite element mesh model, the mesh in the weld area and the area near the weld is refined, and the mesh in the area far from the weld is coarsened, which can not only improve the calculation accuracy but also improve the calculation efficiency;

[0085] 2. A composite heat source model consisting of a Gaussian surface heat source and a conical heat source was established, and a coupling formula for the two heat source models was proposed. This model can accurately simulate the morphology of aluminum alloy electron beam welds.

[0086] 3. The temperature field calculated by the combined heat source model can provide more accurate input for the calculation of welding stress and deformation.

[0087] The present invention also provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above methods when executing the computer program.

[0088] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0089] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0090] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0091] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for constructing a heat source model for electron beam welding of aluminum alloys, characterized in that: The method comprises: S10. Establish a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure; S20. Establishing a three-dimensional combined initial heat source model of the aluminum alloy electron beam welding structure based on the three-dimensional finite element mesh model; S30, embedding the three-dimensional combined initial heat source model into the three-dimensional finite element mesh model to obtain the welding temperature field of the aluminum alloy electron beam welded structure; S40, the aluminum alloy electron beam welding structure of the welding temperature field and the actual weld morphology is compared to determine the aluminum alloy electron beam welding structure of the welding temperature field and the actual weld morphology is consistent, and if so, go to S50, otherwise, go to S60; S50, using the three-dimensional combined initial heat source model of the aluminum alloy electron beam welded structure as the final heat source model of the aluminum alloy electron beam welded structure; S60, adjusting corresponding parameters in the three-dimensional combined initial heat source model according to the inconsistent factors, and going to S20; In S20, a three-dimensional combined initial heat source model of the aluminum alloy electron beam welding structure is established by the following formula: ； in, , ， ； Where, represents the heat flux density of the three-dimensional combined heat source, represents the heat flux density of the surface heat source, represents the heat flux density of the body heat source, x, y, z represent the x-axis, y-axis, and z-axis coordinates in the three-dimensional finite element mesh model, t represents the welding time, Q s represents the power of the surface heat source, r represents the effective radius of the surface heat source, v represents the welding speed, Q c represents the power of the body heat source, H represents the depth of the body heat source, r e represents the radius of the upper surface of the body heat source, r i represents the radius of the lower surface of the body heat source, r0(z) represents the function of the radius of the body heat source in the depth direction, Z e represents the z-axis coordinate of the upper surface of the body heat source, z i Indicates the z-axis coordinate of the lower surface of the volume source.

2. The method according to claim 1, characterized in that In S60, the corresponding parameters in the three-dimensional combined initial heat source model are adjusted according to the inconsistency factors, including: S61. If the discrepancy factor is weld penetration, adjust the depth of the body heat source; S62. When the non-conforming factor is the weld width in the middle of the weld, adjust the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source; S63. When the inconsistent factor is the weld top width, adjust the effective radius of the surface heat source.

3. The method according to claim 2, characterized in that In S61, when the non-compliant factor is weld penetration, the adjustment of the depth of the body heat source includes: S611. When the weld penetration depth indicated by the welding temperature field of the aluminum alloy electron beam welded structure is less than the actual weld penetration depth, increase the depth of the body heat source; S612. When the weld penetration depth represented by the welding temperature field of the aluminum alloy electron beam welded structure is greater than the actual weld penetration depth, reduce the depth of the body heat source.

4. The method according to claim 2, characterized in that In S62, when the non-conforming factor is the weld width in the middle of the weld, adjusting the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source includes: S621. When the weld width in the middle of the weld represented by the welding temperature field of the aluminum alloy electron beam welded structure is smaller than the actual weld width in the middle of the weld, simultaneously increase the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source; S622. When the middle weld width represented by the welding temperature field of the aluminum alloy electron beam welded structure is larger than the middle weld width of the actual weld, the radius of the upper surface of the body heat source and the radius of the lower surface of the body heat source are simultaneously reduced.

5. The method according to claim 2, characterized in that In S63, when the non-compliant factor is the weld top width, the adjustment of the effective radius of the surface heat source includes: S631. When the weld top width indicated by the welding temperature field of the aluminum alloy electron beam welded structure is smaller than the actual weld top width, increase the effective radius of the surface heat source; S632. When the top molten width of the weld represented by the welding temperature field of the aluminum alloy electron beam welded structure is larger than the top molten width of the actual weld, reduce the effective radius of the surface heat source.

6. The method according to claim 1, characterized in that In S10, the three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure is established, including: S11. Establish a geometric model of the aluminum alloy electron beam welding structure; S12. Meshing the geometric model of the aluminum alloy electron beam welded structure to obtain a three-dimensional finite element mesh model of the aluminum alloy electron beam welded structure; In the meshing process, the meshes in the weld area and the area close to the weld are refined, and the meshes in the area far from the weld are coarsened.

7. A computer device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the method according to any one of claims 1 to 6 is implemented when the processor executes the computer program.

Images