Instrument panel cross beam design method and device, medium, equipment and program product

Abstract

The invention relates to the technical field of automobile body structures, and provides an instrument panel cross beam design method and device, a medium, equipment and a program product, and the instrument panel cross beam design method comprises the steps: obtaining the area strain of each area in an instrument panel cross beam under the action of a preset direction force; determining a target to-be-reinforced area under the action of a preset direction force according to the area strain; and the target to-be-reinforced area is reinforced, so that the instrument panel cross beam single body delivered to a whole vehicle manufacturer meets the performance requirements of the whole vehicle manufacturer, the number of times of interaction with the whole vehicle manufacturer is greatly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile body structures, and in particular, to a dashboard crossbeam design method, device, medium, equipment and program product. Background Art

[0002] The dashboard cross beam (English name: Cross Car Beam, usually referred to as CCB), located inside the dashboard, provides support for the dashboard assembly and its accessories (such as air-conditioning control module, instrument cluster, etc.), passenger-side airbag (PAB), steering column, air-conditioning box, wiring harness and other parts. It is one of the important parts of a car. In addition to its installation and fixing functions, some vehicle manufacturers also have high requirements for the dashboard cross beam in the event of an offset collision of the vehicle.

[0003] In related technologies, some vehicle manufacturers do not evaluate the collision performance of the dashboard crossbeam alone, but bring it into the whole vehicle for overall simulation analysis, and then analyze the cause and make corrections after discovering the problem. However, for parts manufacturers, without a whole vehicle model, the single performance analysis of the dashboard crossbeam requires multiple interactions with the vehicle manufacturer, resulting in low production efficiency. Summary of the invention

[0004] The purpose of the present disclosure is to provide a dashboard cross beam design method, device, medium, equipment and program product to solve the problems in the related art.

[0005] In order to achieve the above-mentioned object, a first aspect of an embodiment of the present disclosure provides a method for designing a cross beam of an instrument panel, the method comprising:

[0006] Obtaining the regional strain of each region in the instrument panel beam under the action of a preset directional force;

[0007] According to the regional strain, determining the target area to be strengthened under the action of the preset directional force;

[0008] Perform a strengthening process on the target area to be strengthened.

[0009] Optionally, the preset directional force includes a left force, a right force and a positive force, the regional strain includes a first strain, a second strain and a third strain, and the target area to be strengthened includes a first area to be strengthened, a second area to be strengthened and a third area to be strengthened;

[0010] The obtaining of the regional strain of each region in the instrument panel beam under the action of the preset directional force comprises:

[0011] Obtaining a first strain of each region in the instrument panel cross beam under the action of a left force;

[0012] Obtaining a second strain of each region in the instrument panel cross beam under the action of the right side force;

[0013] Obtaining a third strain of each region in the instrument panel cross beam under the action of a normal force;

[0014] Determining the target area to be strengthened under the action of the preset directional force according to the regional strain includes:

[0015] Determining a first area to be strengthened under the action of the left force according to the first strain;

[0016] According to the second strain, determining a second area to be strengthened under the action of the right side force;

[0017] determining a third area to be strengthened under the action of the normal force according to the third strain;

[0018] The step of performing a strengthening process on the target area to be strengthened includes:

[0019] Strengthening processing is performed on the first region to be strengthened, the second region to be strengthened, and the third region to be strengthened.

[0020] Optionally, determining the target area to be strengthened under the action of a preset directional force according to the regional strain includes:

[0021] comparing the regional strain with a preset strain;

[0022] When the regional strain is greater than the preset strain, the region corresponding to the regional strain is determined as a target region to be strengthened under the action of a preset directional force.

[0023] Optionally, the preset directional force action includes:

[0024] The preset direction side of the instrument panel beam is connected to a rigid profiling tooling for loading a preset directional force from the preset direction side of the instrument panel beam at a preset loading speed until a preset directional force threshold is reached, and after maintaining the preset time, the preset directional force is unloaded at a preset unloading speed, and a 6-degree-of-freedom constraint is performed on the connection point on the non-preset direction side of the instrument panel beam.

[0025] Optionally, there is a 25% offset collision between the rigid contoured tooling and the instrument panel cross beam.

[0026] Optionally, before determining the target area to be strengthened under the action of the preset directional force according to the regional strain, the instrument panel cross beam design method further includes:

[0027] Obtaining a first area displacement of each area of ​​the instrument panel cross beam under the action of a preset directional force;

[0028] According to the first regional displacement, the connection point of the dashboard cross beam on the non-preset direction side is verified by 6-DOF constraint, and if the verification passes, the target area to be strengthened under the preset directional force is determined according to the regional strain.

[0029] Optionally, after the target area to be reinforced is reinforced, the instrument panel cross beam design method further includes:

[0030] Obtaining a second area displacement of each area of ​​the instrument panel cross beam under the action of a preset directional force;

[0031] According to the first region displacement and the second region displacement, an enhanced processing effect is obtained.

[0032] Optionally, the instrument panel cross beam is a steel-plastic combined instrument panel cross beam, and the regional strain is the strain of the plastic part in the steel-plastic combined instrument panel cross beam.

[0033] According to a second aspect of an embodiment of the present disclosure, a device for designing a cross beam of an instrument panel is provided, the device for designing a cross beam of an instrument panel comprising:

[0034] An acquisition module is configured to acquire a regional strain of each region in the instrument panel cross beam under a preset directional force;

[0035] A region determination module is configured to determine a target region to be strengthened under a preset directional force according to the regional strain;

[0036] The enhancement processing module is configured to perform enhancement processing on the target area to be enhanced.

[0037] According to a third aspect of an embodiment of the present disclosure, there is provided a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the dashboard cross beam design method provided in any one of the first aspects.

[0038] According to a fourth aspect of an embodiment of the present disclosure, there is provided an electronic device, including:

[0039] a memory having a computer program stored thereon;

[0040] A processor is used to execute the computer program in the memory to implement the steps of the instrument panel cross beam design method provided in any one of the first aspects.

[0041] According to a fifth aspect of an embodiment of the present disclosure, there is provided a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the dashboard cross beam design method provided in any one of the first aspects.

[0042] By sampling the above technical solution, the regional strain of each area in the dashboard cross beam is obtained through the action of preset directional force, and the target area to be strengthened is determined according to the regional strain, and then the target area to be strengthened is strengthened, so that the dashboard cross beam monomer delivered to the vehicle manufacturer meets the performance requirements of the vehicle manufacturer, which greatly reduces the number of interactions with the vehicle manufacturer and improves production efficiency.

[0043] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0045] Figure 1 The present invention is a flow chart showing a method for designing a cross beam of an instrument panel according to an exemplary embodiment.

[0046] Figure 2 It is a schematic diagram showing that the preset directional force is a left force according to an exemplary embodiment.

[0047] Figure 3 It is a schematic diagram showing that the preset directional force is a right force according to an exemplary embodiment.

[0048] Figure 4 It is a schematic diagram showing that the preset directional force is a positive force according to an exemplary embodiment.

[0049] Figure 5 is a schematic diagram showing a target area to be strengthened according to an exemplary embodiment.

[0050] Figure 6 The present invention is a flow chart showing another method for designing a cross beam of an instrument panel according to an exemplary embodiment.

[0051] Figure 7 The present invention is a flow chart showing another method for designing a cross beam of an instrument panel according to an exemplary embodiment.

[0052] Figure 8 is a sub-step flowchart of step S2 according to an exemplary embodiment.

[0053] Fig. 9 The present invention is a flow chart showing another method for designing a cross beam of an instrument panel according to an exemplary embodiment.

[0054] Fig.10 The invention is a block diagram of a device for designing a cross beam of an instrument panel according to an exemplary embodiment.

[0055] Fig.11 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0056] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0057] In the description below, words such as “first” and “second” are only used for the purpose of distinguishing the description and should not be understood as indicating or implying relative importance or order.

[0058] The dashboard crossbeam is located inside the dashboard and provides support for the dashboard assembly and its accessories (such as air-conditioning control module, instrument cluster, etc.), passenger-side airbag (PAB), steering column, air-conditioning box, wiring harness and other parts. It is one of the important automotive components. In addition to its installation and fixing functions, some vehicle manufacturers also have high requirements for the dashboard crossbeam in the event of an offset collision of the vehicle.

[0059] In related technologies, some vehicle manufacturers do not evaluate the collision performance of the dashboard crossbeam alone, but bring it into the whole vehicle for overall simulation analysis, and then analyze the cause and make corrections after discovering the problem. However, for parts manufacturers, without a whole vehicle model, the single performance analysis of the dashboard crossbeam requires multiple interactions with the vehicle manufacturer, resulting in low production efficiency.

[0060] In order to solve the problems in related technologies, the regional strain of each area in the dashboard beam is obtained by the action of preset directional force, and the target area to be strengthened is determined according to the regional strain, and then the target area to be strengthened is strengthened, so that the dashboard beam monomer delivered to the vehicle manufacturer meets the performance requirements of the vehicle manufacturer, greatly reducing the number of interactions with the vehicle manufacturer and improving production efficiency.

[0061] Figure 1 The flowchart of the instrument panel cross beam design method according to an exemplary embodiment is shown. The instrument panel cross beam design method can be applied to electronic equipment, and the instrument panel cross beam design method can include steps S1 to S3.

[0062] Step S1, obtaining the regional strain of each region in the instrument panel cross beam under the action of a preset directional force.

[0063] The preset directional force refers to the external force with a specific direction applied to the instrument panel beam under experimental or actual working conditions. This external force may come from a frontal collision, a side collision, the vibration of the vehicle during driving, or the operation of the instrument panel components by passengers. The magnitude, direction and point of action of the preset directional force will affect the strain distribution of the beam.

[0064] A rigid profiling tool can be connected to a connection point in a preset direction to apply a preset direction force. The preset direction can be a lateral direction and a forward direction, wherein the lateral direction can include a left side and a right side. Correspondingly, the preset direction force can include a left side force, a right side force and a forward force. Please refer to Figure 2 , Figure 2 FIG. 1 is a schematic diagram showing that the preset direction force is a left force according to an exemplary embodiment. Figure 3 , Figure 3 FIG. 1 is a schematic diagram showing that the preset direction force is the right force according to an exemplary embodiment. Figure 4 , Figure 4 2 is a schematic diagram showing that the preset directional force is a positive force according to an exemplary embodiment. The predicted directional force may be one or more of a left force, a right force and a positive force.

[0065] Strain refers to the amount of deformation per unit length, reflecting the degree of deformation of a material under the action of an external force. In the dashboard beam, due to the action of a preset directional force, the stress conditions in different areas will cause different strains in these areas. The strain in each area is the regional strain of that area.

[0066] Step S2: determining the target area to be strengthened under the action of the preset directional force according to the regional strain.

[0067] Different preset strains can be set for different areas of the instrument panel cross beam according to actual conditions. For each area, the target area to be strengthened under the preset direction force is determined according to the regional strain of the area and the corresponding preset strain.

[0068] In other embodiments, the same preset strain may be set for different areas of the instrument panel cross beam according to actual conditions.

[0069] For example, see Figure 5 , Figure 5 FIG. 1 is a schematic diagram of a target area to be strengthened according to an exemplary embodiment, wherein the target area to be strengthened is enclosed by a dotted line.

[0070] Step S3, performing enhancement processing on the target area to be enhanced.

[0071] Design and implement appropriate reinforcement or strengthening plans for the target area to be strengthened. Strengthening methods include but are not limited to increasing material strength, changing structural shape, adding support structures, etc.

[0072] For example, the strengthening treatment may be to enlarge the cross section of the main beam, expand the plastic arrangement area, change the arrangement trend of the ribs, change the thickness of the ribs, improve the corners of the ribs, add metal reinforcement plates at locations with large deformation, etc.

[0073] Strengthening treatment is performed on the target area to ensure that the structure can withstand greater strains without becoming unstable or damaged when subjected to a preset directional force.

[0074] Through the action of preset directional force, the regional strain of each area in the dashboard beam is obtained, and the target area to be strengthened is determined according to the regional strain. The target area to be strengthened is then strengthened, so that the dashboard beam monomer delivered to the vehicle manufacturer meets the performance requirements of the vehicle manufacturer, greatly reducing the number of interactions with the vehicle manufacturer and improving production efficiency.

[0075] In a possible implementation, the preset directional force includes a left force, a right force and a positive force, the regional strain includes a first strain, a second strain and a third strain, and the target area to be strengthened includes a first area to be strengthened, a second area to be strengthened and a third area to be strengthened. Figure 6 The dashboard cross beam design method may include steps S201 to S207.

[0076] Step S201, obtaining the first strain of each area in the instrument panel cross beam under the action of the left side force.

[0077] The left side force can be applied by a rigid profiling tool connected to the left side of the instrument panel cross beam. Under the action of the left side force, strain occurs in different areas of the instrument panel cross beam. The strain of each area is determined to obtain the first strain of each area.

[0078] Step S202, obtaining the second strain of each area in the instrument panel cross beam under the action of the right side force.

[0079] The right side force can be applied through a rigid profiling tool connected to the right side of the instrument panel cross beam. Under the action of the right side force, strain occurs in different areas of the instrument panel cross beam. The strain of each area is determined to obtain the second strain of each area.

[0080] Step S203, obtaining the third strain of each area in the instrument panel cross beam under the action of the normal force.

[0081] A positive force can be applied through a rigid profiling tooling connected to the positive direction of the instrument panel cross beam. Under the action of the positive force, strain occurs in different areas of the instrument panel cross beam. The strain of each area is determined to obtain the third strain of each area.

[0082] It should be understood that the left force, the right force and the normal force are applied to the instrument panel cross beam individually, rather than simultaneously.

[0083] Step S204: determining a first area to be strengthened under the action of the left force according to the first strain.

[0084] For each region, a first region to be strengthened under the action of the left-side force is determined according to the first strain of the region and the corresponding preset strain.

[0085] Step S205: determining a second area to be strengthened under the action of the right side force according to the second strain.

[0086] For each region, the second region to be strengthened under the action of the right-side force is determined according to the second strain of the region and the corresponding preset strain.

[0087] Step S206: determining a third area to be strengthened under the action of the normal force according to the third strain.

[0088] For each region, a third region to be strengthened under the action of the normal force is determined according to the third strain of the region and the corresponding preset strain.

[0089] Step S207, performing strengthening processing on the first area to be strengthened, the second area to be strengthened, and the third area to be strengthened.

[0090] It should be noted that step S201, step S202 and step S203 may refer to step S1, step S204, step S205 and step S206 may refer to step S2, and step S207 may refer to S3, which will not be described in detail in this embodiment.

[0091] In other embodiments, the preset directional force includes a left force, a right force and a positive force, the regional strain includes a first strain, a second strain and a third strain, and the target area to be strengthened includes a first area to be strengthened, a second area to be strengthened and a third area to be strengthened. Figure 7 The dashboard crossbeam design method may include steps S301 to S309.

[0092] Step S301, obtaining the first strain of each area in the instrument panel cross beam under the action of the left side force.

[0093] Step S302: determining a first area to be strengthened under the action of the left force according to the first strain.

[0094] Step S303: Perform strengthening processing on the first area to be strengthened.

[0095] Step S304, obtaining the second strain of each area in the instrument panel beam under the action of the right side force;

[0096] Step S305: determining a second area to be strengthened under the action of the right side force according to the second strain.

[0097] Step S306, performing enhancement processing on the second area to be enhanced.

[0098] Step S307, obtaining the third strain of each area in the instrument panel beam under the action of the normal force;

[0099] Step S308, determining a third area to be strengthened under the action of the normal force according to the third strain;

[0100] Step S309: Perform enhancement processing on the third area to be enhanced.

[0101] It should be noted that steps S301 to S309 may refer to steps S201 to S207, which will not be described in detail in this embodiment.

[0102] It should be understood that steps 301 to S303, steps 304 to S306, and steps 307 to S309 may be executed simultaneously or in a different order, which is not limited in this embodiment.

[0103] In one possible implementation, see Figure 8 , step S2 may include step S21 and step S22.

[0104] Step S21, comparing the regional strain with the preset strain.

[0105] Step S22: when the regional strain is greater than the preset strain, the region corresponding to the regional strain is determined as the target region to be strengthened under the action of the preset directional force.

[0106] Different preset strains can be set for different areas of the instrument panel cross beam according to actual conditions. For each area, the regional strain of the area is compared with the corresponding preset strain. When the regional strain of the area is greater than the corresponding preset strain, the area corresponding to the regional strain is determined as the target area to be strengthened under the preset directional force.

[0107] In other embodiments, the same preset strain may be set for different areas of the instrument panel cross beam according to actual conditions.

[0108] In a possible implementation, the preset directional force action may include:

[0109] The preset direction side of the instrument panel beam is connected to a rigid profiling tooling, which is used to load a preset directional force from the preset direction side of the instrument panel beam at a preset loading speed until a preset directional force threshold is reached. After maintaining the preset time, the preset directional force is unloaded at a preset unloading speed, and the connection point on the non-preset direction side of the instrument panel beam is constrained with 6 degrees of freedom.

[0110] For example, if the preset direction force is the left force, please continue to refer to Figure 2, connect the left side of the instrument panel beam to the rigid profiling tooling, do not connect the A-pillar near the left side of the instrument panel beam, and tighten the other connection points with bolts. Use the rigid profiling tooling to load, according to the preset loading speed of 5000N / s, load to the preset directional force threshold (for example, 2000N), keep it for 2s, and then unload at the preset unloading speed of 5000N / s. The left side of the instrument panel beam is connected to the rigid profiling tooling, and can only move in the Y direction of the coordinate system. The other connection points of the body are all constrained with 6 degrees of freedom.

[0111] If the preset direction force is right force, please continue to refer to Figure 3 , connect the right side of the dashboard beam to the rigid profiling tooling, do not connect the A-pillar near the right side of the dashboard beam, and tighten the other connection points with bolts. Use the rigid profiling tooling to load at the preset loading speed of 5000N / s, load to the preset directional force threshold, hold for 2s, and then unload at the preset unloading speed of 5000N / s. The left side of the dashboard beam is connected to the rigid profiling tooling, and can only move horizontally along the Y direction of the coordinate system. The remaining connection points of the body are all constrained with 6 degrees of freedom.

[0112] If the preset direction force is positive force, please continue to refer to Figure 4 , connect the instrument panel cross beam in the positive direction to the rigid profiling tooling, and tighten the other connection points with bolts. Use the rigid profiling tooling to load, according to the preset loading speed of 5000N / s, after loading to the preset directional force threshold, keep it for 2s, and then unload at the preset unloading speed of 5000N / s. The instrument panel cross beam is connected to the rigid profiling tooling in the positive direction, and can only move horizontally along the X direction of the coordinate system. The other connection points of the body are all constrained with 6 degrees of freedom.

[0113] It should be understood that the preset directional force threshold can be set according to actual conditions. For different preset directional forces, the preset directional force thresholds corresponding to the preset directional forces may be different. The preset directional force thresholds corresponding to different vehicle manufacturers may also be different. This embodiment does not limit this.

[0114] The 25% offset collision is also called the 25% overlap offset frontal collision. It refers to the overlap rate between the test vehicle and the rigid barrier is 25%. It simulates the situation when the vehicle encounters an offset collision on the road. In this test, the test vehicle hits a rigid barrier at a certain speed. The 25% overlap test requires that the overlap rate between the vehicle and the barrier is only 25%. This means that the impact area of ​​the vehicle is smaller, and higher requirements are placed on the vehicle's structure and safety performance. Due to the reduction in the impact area, the impact force on the vehicle during the collision will be more concentrated. This requires the vehicle to have a more solid body structure and higher safety performance, and places very high requirements on the dashboard beam.

[0115] In one possible implementation, a 25% offset collision is set between the rigid profiling tooling and the dashboard cross beam to quickly verify whether the design of the dashboard cross beam is reasonable and whether the safety performance meets the standards, which helps to shorten the product development cycle and reduce development costs.

[0116] In one possible implementation, see Fig. 9 The dashboard crossbeam design method may include steps S401 to S406.

[0117] Step S401, obtaining the regional strain of each region in the instrument panel cross beam under the action of a preset directional force.

[0118] Step S402, obtaining a first area displacement of each area in the instrument panel cross beam under the action of a preset directional force.

[0119] In the dashboard cross beam, due to the effect of the preset directional force, the stress conditions in different areas will cause these areas to have different displacements, and the displacement of each area is the first area displacement of the area.

[0120] Step S403 , based on the first region displacement, the connection points on the non-preset direction side of the instrument panel cross beam are subjected to 6-DOF constraints for verification.

[0121] According to the first area displacement and the preset displacement threshold, the connection points on the non-preset direction side of the instrument panel cross beam are verified by performing 6-DOF constraints.

[0122] Step S404, determining whether the verification is successful.

[0123] When the displacement in the first area is greater than the preset displacement threshold, the verification is considered to have failed, and an early warning may be issued to prompt that the connection points on the non-preset direction side of the dashboard beam have not been constrained to 6 degrees of freedom. When the displacement in the first area is less than or equal to the preset displacement threshold, the verification is considered to have passed, and step S405 is executed.

[0124] Step S405: determining the target area to be strengthened under the action of the preset directional force according to the regional strain.

[0125] Step S406, performing enhancement processing on the target area to be enhanced.

[0126] It should be noted that step S401 may refer to step S1, step S405 may refer to step S2, and step S406 may refer to step S3, which will not be described in detail in this embodiment.

[0127] The 6-degree-of-freedom constraint of the connection points on the non-preset direction side of the dashboard beam is verified through the first area displacement of each area in the dashboard beam to ensure the 6-degree-of-freedom constraint of the connection points on the non-preset direction side of the dashboard beam, thereby ensuring the accurate target area to be strengthened, achieving precise strengthening processing, and improving the efficiency of the dashboard beam design.

[0128] In one possible implementation, please refer to Fig. 9 , after step S406, the dashboard cross beam design method may further include steps S407 and S408.

[0129] Step S407, obtaining the second region displacement of each region in the instrument panel cross beam under the action of the preset directional force.

[0130] After strengthening the target area to be strengthened, the performance of the instrument panel cross beam will be significantly improved, and the rigid profiling tooling can be connected again at the connection point in the preset direction to apply the preset directional force. In the instrument panel cross beam, due to the effect of the preset directional force, the force conditions in different areas will cause these areas to have different displacements. The displacement of each area is the second area displacement of the area.

[0131] Step S408, obtaining an enhanced processing effect according to the first region displacement and the second region displacement.

[0132] The difference between the first regional displacement and the second regional displacement is calculated to obtain the regional displacement difference, and the ratio of the regional displacement difference to the first regional displacement is calculated to obtain the optimization rate of the enhanced processing effect.

[0133] In a possible implementation, the instrument panel cross beam is a steel-plastic instrument panel cross beam. Since the elongation at break of the plastic part is much smaller than that of the steel part, the ratio of the strain of the plastic part to the elongation at break of the plastic material can be observed. The regional strain can be the strain of the plastic part in the steel-plastic instrument panel cross beam.

[0134] In one embodiment, a certain vehicle model has a 25% offset collision analysis of the whole vehicle, which has higher requirements for the dashboard crossbeam and needs to bear a large force component. After the dashboard crossbeam is designed, the first round of vehicle simulation does not meet the standards. The results on the driver's side are shown in Table 1.

[0135]

[0136] Table 1

[0137] As can be seen from Table 1, many displacements exceed the standard. Since the parts manufacturers do not have a complete vehicle model, it is inconvenient to verify. At this time, the single-body simulation analysis of the instrument panel beam of the lateral force and the normal force of the parts is enabled. Based on the preliminary results, the weak areas are optimized. After significant improvements are made, the vehicle manufacturer will bring it into the whole vehicle for simulation to verify the effect.

[0138] The analysis results of the lateral force and normal force of the first version of the instrument panel cross beam are shown in Table 2:

[0139]

[0140] Table 2

[0141] Take the left force as an example to introduce the process of viewing and optimizing the analysis results. After constraints and loading conditions are set, set the output parameters to displacement (DISPLACEMENT) and strain (STRAIN) in the simulation software hypermesh, bring it into the Optistruct software to start the calculation, and after the calculation is completed, open the h3d file in hyperview, hide the 1D unit and the first layer of mesh connected to it, view the strain results in contour, select vonMises as the result type, select Displayed for Elements, and view the unit strain. You can set the setting greater than the preset strain to be displayed in color, and the setting less than the preset strain to be gray. Figure 5 The target area to be strengthened is in the middle dotted box, and strengthening treatment is performed on the target area to be strengthened, such as thickening the ribs, increasing the fillet of the ribs, improving the arrangement of the ribs, etc.

[0142] After the strengthening treatment, the calculation was submitted again under the same boundary, and the improved results are shown in Table 3. The maximum strain under the left force changed from 13.6% to 3.1%.

[0143] Similarly, the right side force and normal force are also checked and optimized in the same way as the above process. Finally, by expanding the cross section of the main beam, expanding the plastic layout area, changing the layout trend of the reinforcement, changing the thickness of the reinforcement, improving the corner of the reinforcement, adding metal reinforcement plates at the location of large deformation and other strengthening treatment methods, the single body lateral force and normal force are optimized, and the improvement effect of the three calculation items of the single body is obtained as shown in Table 3:

[0144]

[0145]

[0146] Table 3

[0147] As can be seen from the above table, the improvement effect of the dashboard beam monomer is obvious. The 25% offset collision result of the optimized version of the vehicle calculation is brought into play. The optimized version results of the driver's side are shown in Table 4 below. The passenger side has the same improvement (no further details are given here).

[0148]

[0149] Table 4

[0150] In summary, the improvement effect is obvious. Starting with the optimization of the dashboard crossbeam monomer is very convenient and quick for parts companies. If the deformation position of the dashboard crossbeam monomer is different from that of the whole vehicle, the local freedom of the monomer can be released to reproduce the deformation of the whole vehicle and reinforce the corresponding position. After the dashboard crossbeam monomer is verified to be effective, it is brought into the vehicle manufacturer for a 25% offset collision simulation of the whole vehicle, which can shorten the development cycle and save development costs.

[0151] Based on the same inventive concept, this embodiment also provides a dashboard crossbeam design device, which can be applied to electronic equipment. Fig.10 is a block diagram of a device for designing a dashboard cross beam according to an exemplary embodiment. Fig.10 As shown, the instrument panel cross beam design device 600 may include:

[0152] An acquisition module 601 is configured to acquire the regional strain of each region in the instrument panel cross beam under the action of a preset directional force;

[0153] The region determination module 602 is configured to determine the target region to be strengthened under the action of the preset directional force according to the regional strain;

[0154] The enhancement processing module 603 is configured to perform enhancement processing on the target area to be enhanced.

[0155] Optionally, the preset directional force includes a left force, a right force and a positive force, the regional strain includes a first strain, a second strain and a third strain, and the target area to be strengthened includes a first area to be strengthened, a second area to be strengthened and a third area to be strengthened;

[0156] The acquisition module 601 includes:

[0157] A first acquisition module is configured to acquire a first strain of each region in the instrument panel beam under the action of a left-side force;

[0158] A second acquisition module is configured to acquire a second strain of each region in the instrument panel beam under the action of the right side force;

[0159] A third acquisition module is configured to acquire a third strain of each region in the instrument panel cross beam under the action of the normal force;

[0160] The area determination module 602 includes:

[0161] A first region determination module is configured to determine a first region to be strengthened under the action of a left force according to the first strain;

[0162] A second region determination module is configured to determine a second region to be strengthened under the action of the right force according to the second strain;

[0163] A third region determination module is configured to determine a third region to be strengthened under the action of a normal force according to a third strain;

[0164] The enhanced processing module 603 is specifically configured to:

[0165] The first region to be strengthened, the second region to be strengthened, and the third region to be strengthened are strengthened.

[0166] Optionally, the region determination module 602 is specifically configured to:

[0167] comparing the regional strain to a preset strain;

[0168] When the regional strain is greater than the preset strain, the region corresponding to the regional strain is determined as the target region to be strengthened under the action of the preset directional force.

[0169] Optionally, the preset directional force action includes:

[0170] The preset direction side of the instrument panel beam is connected to a rigid profiling tooling, which is used to load a preset directional force from the preset direction side of the instrument panel beam at a preset loading speed until a preset directional force threshold is reached. After maintaining the preset time, the preset directional force is unloaded at a preset unloading speed, and the connection point on the non-preset direction side of the instrument panel beam is constrained with 6 degrees of freedom.

[0171] Optionally, the rigid contoured tooling is in 25% offset contact with the instrument panel cross beam.

[0172] Optionally, the instrument panel cross beam design device 600 may further include:

[0173] A first displacement determination module is configured to obtain a first area displacement of each area in the instrument panel cross beam under a preset directional force;

[0174] The verification module is configured to verify the 6-DOF constraint of the connection point on the non-preset direction side of the instrument panel cross beam according to the first area displacement.

[0175] Optionally, the instrument panel cross beam design device 600 may further include:

[0176] A second displacement determination module is configured to obtain a second area displacement of each area in the instrument panel cross beam under a preset directional force;

[0177] The effect determination module is configured to obtain an enhanced processing effect according to the first region displacement and the second region displacement.

[0178] Optionally, the instrument panel cross beam is a steel-plastic combined instrument panel cross beam, and the regional strain is the strain of the plastic part in the steel-plastic combined instrument panel cross beam.

[0179] Regarding the instrument panel cross beam design device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the instrument panel cross beam design method, and will not be elaborated here.

[0180] Fig.11 FIG. 7 is a block diagram of an electronic device 700 according to an exemplary embodiment. Fig.11 As shown, the electronic device 700 may include: a processor 701 and a memory 702. The electronic device 700 may also include one or more of a multimedia component 703, an input / output (I / O) interface 704, and a communication component 705.

[0181] The processor 701 is used to control the overall operation of the electronic device 700 to complete all or part of the steps in the above-mentioned dashboard crossbeam method. The memory 702 is used to store various types of data to support the operation of the electronic device 700, and these data may include, for example, instructions for any application or method operated on the electronic device 700, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 703 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, which is used to receive external audio signals. The received audio signal may be further stored in the memory 702 or sent through the communication component 705. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 704 provides an interface between the processor 701 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 705 may include: Wi-Fi module, Bluetooth module, NFC module.

[0182] In an exemplary embodiment, the electronic device 700 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned dashboard cross beam method.

[0183] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned dashboard cross beam method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 702 including program instructions, and the above-mentioned program instructions can be executed by the processor 701 of the electronic device 700 to complete the above-mentioned dashboard cross beam method.

[0184] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a processor. When the computer program is executed by the processor, the steps of the above-mentioned dashboard cross beam method are implemented.

[0185] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0186] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0187] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for designing a crossbeam of an instrument panel, characterized in that: The instrument panel crossbeam design method comprises: Obtaining the regional strain of each region in the instrument panel beam under the action of a preset directional force; According to the regional strain, determining the target area to be strengthened under the action of the preset directional force; Perform a strengthening process on the target area to be strengthened.

2. The instrument panel crossbeam design method according to claim 1, characterized in that: The preset directional force includes a left force, a right force and a positive force, the regional strain includes a first strain, a second strain and a third strain, and the target area to be strengthened includes a first area to be strengthened, a second area to be strengthened and a third area to be strengthened; The obtaining of the regional strain of each region in the instrument panel beam under the action of the preset directional force comprises: Obtaining a first strain of each region in the instrument panel cross beam under the action of a left force; Obtaining a second strain of each region in the instrument panel cross beam under the action of the right side force; Obtaining a third strain of each region in the instrument panel cross beam under the action of a normal force; Determining the target area to be strengthened under the action of the preset directional force according to the regional strain includes: Determining a first area to be strengthened under the action of the left force according to the first strain; According to the second strain, determining a second area to be strengthened under the action of the right side force; determining a third area to be strengthened under the action of the normal force according to the third strain; The step of performing a strengthening process on the target area to be strengthened includes: Strengthening processing is performed on the first region to be strengthened, the second region to be strengthened, and the third region to be strengthened.

3. The instrument panel crossbeam design method according to claim 1, characterized in that: Determining the target area to be strengthened under the action of the preset directional force according to the regional strain includes: comparing the regional strain with a preset strain; When the regional strain is greater than the preset strain, the region corresponding to the regional strain is determined as a target region to be strengthened under the action of a preset directional force.

4. The instrument panel crossbeam design method according to claim 1, characterized in that: Preset directional force effects, including: The preset direction side of the instrument panel beam is connected to a rigid profiling tooling for loading a preset directional force from the preset direction side of the instrument panel beam at a preset loading speed until a preset directional force threshold is reached, and after maintaining the preset time, the preset directional force is unloaded at a preset unloading speed, and a 6-degree-of-freedom constraint is performed on the connection point on the non-preset direction side of the instrument panel beam.

5. The instrument panel cross beam design method according to claim 4, characterized in that: There is a 25% offset collision between the rigid contour tooling and the instrument panel cross beam.

6. The instrument panel cross beam design method according to claim 4, characterized in that: Before determining the target area to be strengthened under the action of the preset directional force according to the regional strain, the instrument panel cross beam design method further includes: Obtaining a first area displacement of each area of ​​the instrument panel cross beam under the action of a preset directional force; According to the first regional displacement, the connection point of the dashboard cross beam on the non-preset direction side is verified by 6-DOF constraint, and if the verification passes, the target area to be strengthened under the preset directional force is determined according to the regional strain.

7. The instrument panel cross beam design method according to claim 6, characterized in that: After the target area to be strengthened is strengthened, the instrument panel cross beam design method further includes: Obtaining a second area displacement of each area of ​​the instrument panel cross beam under the action of a preset directional force; According to the first region displacement and the second region displacement, an enhanced processing effect is obtained.

8. The instrument panel cross beam design method according to claim 1, characterized in that: The instrument panel cross beam is a steel-plastic combined instrument panel cross beam, and the regional strain is the strain of the plastic part in the steel-plastic combined instrument panel cross beam.

9. A device for designing a crossbeam of an instrument panel, characterized in that: The instrument panel cross beam design device comprises: An acquisition module is configured to acquire a regional strain of each region in the instrument panel cross beam under a preset directional force; A region determination module is configured to determine a target region to be strengthened under a preset directional force according to the regional strain; The enhancement processing module is configured to perform enhancement processing on the target area to be enhanced.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the instrument panel cross beam design method described in any one of claims 1 to 8 are implemented.

11. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the steps of the instrument panel cross beam design method according to any one of claims 1 to 8.

12. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the instrument panel cross beam design method described in any one of claims 1 to 8 are implemented.

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