Installation evaluation method for limit support and related equipment

Abstract

The application discloses a kind of installation evaluation method of limiting support and related equipment, belong to test technical field.Method includes: according to first candidate installation area and first candidate limiting mode, establish the first installation simulation model of limiting support;According to first candidate installation area, determine the first bolt hole structure of first bolt for fixing limiting support;First plastic material parameter corresponding to first bolt hole structure is input into first installation simulation model along with first load, and the first simulation result of first installation simulation model is obtained;In the case where first simulation result meets first evaluation standard, output first information, indicate that first candidate limiting mode is allowed in first candidate installation area, and the first bolt of first bolt type is installed limiting support.The application can improve the reliability of limiting support installation evaluation.

Description

Technical Field

[0001] This application belongs to the field of testing technology, and in particular relates to an installation evaluation method and related equipment for a limit bracket. Background Technology

[0002] Currently, for range-extended hybrid vehicles, due to their high level of integration, the limiting brackets for the air conditioning pipes are usually fixed using existing holes in components such as the compressor. Initially, the installation area of ​​the limiting brackets and the type of bolts used to fix the limiting brackets are generally determined based on experience.

[0003] However, for different vehicle models and different pipelines, the limiting effect varies due to differences in the structural layout of the components, the installation area and contact point of the limiting bracket, and thus the resulting limiting effect. Therefore, relying solely on experience to assess the reliability of the limiting bracket installation is unreliable. Summary of the Invention

[0004] This application provides a method and related equipment for evaluating the installation of a limiting bracket, which can solve the problem of low reliability in the evaluation of fiber optic bracket installation.

[0005] In a first aspect, embodiments of this application provide an installation evaluation method for a limiting bracket, the method comprising:

[0006] Obtain the first candidate installation area and the first candidate limiting method of the limiting bracket;

[0007] Based on the first candidate installation area and the first candidate limiting method, a first installation simulation model of the limiting bracket is established;

[0008] Based on the first candidate installation area, determine the first bolt hole structure for fixing the first bolt of the limiting bracket;

[0009] The first plastic material parameters corresponding to the first bolt hole structure and the first load are input into the first installation simulation model to obtain the first simulation result of the first installation simulation model. The first plastic material parameters are used to simulate the first bolt hole structure in the first installation simulation model; the first load is used to simulate the first bolt of the first bolt type installed in the first bolt hole structure; the first simulation result includes the first displacement value of the limiting bracket.

[0010] If the first simulation result meets the first evaluation criterion, first information is output, wherein the first simulation result meeting the first evaluation criterion includes: the first displacement value is less than a preset displacement threshold; the first information indicates that the first candidate limiting method is allowed to be used in the first candidate installation area, and the limiting bracket is installed with the first bolt of the first bolt type.

[0011] Secondly, embodiments of this application provide an installation evaluation device for a limiting bracket, the device comprising:

[0012] The first acquisition module is used to acquire the first candidate installation area and the first candidate limiting method of the limiting bracket;

[0013] The first establishment module is used to establish a first installation simulation model of the limiting bracket based on the first candidate installation area and the first candidate limiting method.

[0014] The first determining module is used to determine the first bolt hole structure for fixing the first bolt of the limiting bracket based on the first candidate installation area.

[0015] The simulation module is used to input the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model. The first plastic material parameters are used to simulate the first bolt hole structure in the first installation simulation model; the first load is used to simulate the first bolt of the first bolt type installed in the first bolt hole structure; the first simulation result includes the first displacement value of the limiting bracket.

[0016] The first output module is configured to output first information when the first simulation result meets the first evaluation criterion, wherein the first simulation result meeting the first evaluation criterion includes: the first displacement value being less than a preset displacement threshold; the first information indicating that the first candidate limiting method and the first bolt of the first bolt type are allowed to be used to install the limiting bracket in the first candidate installation area.

[0017] Thirdly, embodiments of this application provide an installation evaluation device for a limiting bracket, the device comprising:

[0018] The processor and the memory storing computer program instructions; the processor, when executing the computer program instructions, implements the installation evaluation method for the limit bracket as described in the first aspect.

[0019] Fourthly, embodiments of this application provide a computer storage medium storing computer program instructions, which, when executed by a processor, implement the installation evaluation method for the limit bracket as described in the first aspect.

[0020] Fifthly, embodiments of this application provide a computer program product in which instructions, when executed by a processor of an electronic device, cause the electronic device to perform the installation evaluation method for the limiting bracket as described in the first aspect.

[0021] In this embodiment, after obtaining the first candidate installation area and the first candidate limiting method of the limiting bracket, on the one hand, a first installation simulation model of the limiting bracket can be established based on the first candidate installation area and the first candidate limiting method; on the other hand, the first bolt hole structure for fixing the first bolt of the limiting bracket can be determined based on the first candidate installation area. Then, the first plastic material parameters corresponding to the first bolt hole structure and the first load can be input into the first installation simulation model. Thus, the first bolt hole structure can be simulated in the first installation simulation model using the first plastic material parameters, and the installation of the first bolt of the first bolt type in the first bolt hole structure can be simulated using the first load. At this time, the first installation simulation model can simulate the installation of the limiting bracket in the first candidate installation area using the first candidate limiting method and the first bolt type. Thus, the feasibility of the installation method can be evaluated through the first simulation results of the first installation simulation model, wherein the first simulation results include at least the first displacement value of the limiting bracket. If the first simulation results meet the first evaluation criteria, it indicates that the installation method is feasible, and first information can be output, indicating that the limiting bracket can be installed in the first candidate installation area using the first candidate limiting method and the first bolt type. As can be seen, the embodiments of this application can simulate candidate installation methods of the limit bracket by constructing an installation simulation model of the limit bracket. In this way, the feasibility of the candidate installation methods can be evaluated by the simulation results of the installation simulation model, thereby improving the reliability of the limit bracket installation evaluation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is one of the flowcharts for the installation evaluation method of the limiting bracket provided in the embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the contact method provided in the embodiments of this application;

[0025] Figure 3a This is one of the schematic diagrams illustrating the conversion of rated torque provided in the embodiments of this application;

[0026] Figure 3b This is the second schematic diagram of the rated torque conversion provided in the embodiments of this application;

[0027] Figure 4a This is a cross-sectional schematic diagram of the bolt hole structure provided in the embodiments of this application;

[0028] Figure 4b This is a schematic diagram of the simulated bolt hole structure provided in the embodiments of this application;

[0029] Figure 5a This is a schematic diagram of the displacement of the limiting bracket provided in the embodiments of this application;

[0030] Figure 5b This is a schematic diagram of the plastic deformation of a bend provided in an embodiment of this application;

[0031] Figure 5c This is a schematic diagram of the maximum principal stress of the bend provided in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the stress-strain curve of low-carbon steel provided in the embodiments of this application;

[0033] Figure 7 This is the second flowchart of the installation evaluation method for the limiting bracket provided in the embodiments of this application;

[0034] Figure 8 This is a schematic diagram of the installation evaluation device for the limiting bracket provided in the embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the installation evaluation device for the limiting bracket provided in the embodiments of this application. Detailed Implementation

[0036] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0038] The installation evaluation method of the limiting bracket provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0039] See Figure 1 , Figure 1 This is one of the flowcharts for the installation evaluation method of the limiting bracket provided in the embodiments of this application. For example... Figure 1 As shown, the installation evaluation method for the limit bracket may include the following steps:

[0040] Step 101: Obtain the first candidate installation area and the first candidate limiting method of the limiting bracket.

[0041] This application does not limit the limiting object of the limiting bracket. In some embodiments, the limiting object of the limiting bracket may be a limiting bracket for components such as air conditioning pipes in a vehicle, but it is not limited to this. It is understood that the installable area may be different for limiting brackets that limit different objects.

[0042] In practice, after determining the limiting object of the limit bracket, the user can assess the working environment of the limiting object and determine at least one candidate installation area of ​​the limit bracket based on experience. For different candidate installation areas, the counters of the limit bracket may be different, and the limit bracket and the counters share bolt hole positions.

[0043] Furthermore, for each candidate installation area, at least one candidate limiting method can be determined. The candidate limiting methods for the limiting bracket at least include the basic method of contact between the limiting bracket and the opposing component. For different candidate limiting methods, the contact method between the limiting bracket and the opposing component can be different. The contact method between the limiting bracket and the opposing component can be as follows: Figure 2 The surface-to-surface contact shown in (a) is as follows: Figure 2 Line-surface contact as shown in (b), such as Figure 2 Line-to-line contact as shown in (c) or as Figure 2 Point-to-surface contact is shown in (d).

[0044] Given a fixed structure and a constant transmitted pressure, according to the pressure theory formula: P = F / S, where the unit of pressure P can be MPa, the unit of force F can be N, and the unit of area S can be m². 2 It can be seen that the larger the area of ​​force application, the smaller the pressure, that is, the smaller the effect of pressure. Therefore, according to the principle of action and reaction forces, in the initial design stage, in order to reduce the effect of the force on the bracket and minimize its deformation, a contact method with a large area should be selected for limiting. The priority order of the contact methods between the limiting bracket and the hand component can be as follows: surface-to-surface contact > line-to-surface contact > line-to-line contact > point-to-surface contact.

[0045] The first candidate installation area can be any one of the at least one candidate installation areas, and the first candidate limiting method can be any one of the at least one candidate limiting methods corresponding to the first candidate installation area.

[0046] Step 102: Based on the first candidate installation area and the first candidate limiting method, establish the first installation simulation model of the limiting bracket.

[0047] The first installation simulation model includes a simulated limiting bracket and a first candidate installation area. The simulated first candidate installation area includes a simulated counterpart and a common bolt hole. In the first installation simulation model, the simulated limiting bracket contacts the counterpart using a contact method corresponding to the first candidate limiting method.

[0048] The embodiments of this application do not limit the model type or the method of establishing the first installation simulation model, which can be determined according to actual needs. In some embodiments, the first installation simulation model can be a three-dimensional network model. First, an assembly geometric model can be formed based on the first candidate installation area and the first candidate limiting method. In addition, finite element structure simulation is performed. Then, a three-dimensional network model can be established using the simulated finite element structure and geometric model to obtain the first installation simulation model.

[0049] Step 103: Determine the first bolt hole structure for fixing the first bolt of the limiting bracket based on the first candidate installation area.

[0050] In this embodiment, bolt tightening can be achieved using a torque method. Standard bolts have a rated torque range. In this process, the rated torque on the bolt is converted into three parts: bolt head friction torque (also known as bolt head under-friction force), axial clamping force, and thread friction torque (also known as friction force in the bolt assembly). The friction torque of the bolt head and thread is consumed, while the axial clamping force clamps the bolt. Figure 3aAs shown, approximately 90% of the rated torque of a bolt is consumed by friction, with only about 10% converted into clamping force (generally 40% friction in a threaded pair and 50% friction on the lower surface of the bolt head). These proportions may fluctuate depending on the degree of lubrication and the presence of impurities. Furthermore, these proportions are related to the bolt hole structure and bolt type. In other words, the bolt hole structure and bolt type will affect the relationship between the bolt head friction torque, thread friction torque, clamping force, and rated torque. That is, different bolt types and bolt hole structures may result in different relationships between the bolt head friction torque, thread friction torque, clamping force, and rated torque.

[0051] As can be seen from the foregoing, after determining the first candidate installation area, the counterpart of the limiting bracket can be determined, and then the common bolt hole position of the limiting bracket and the counterpart can be determined, i.e. the first bolt hole position, and then the structure of the first bolt hole position can be determined, i.e. the structure of the first bolt hole position.

[0052] The bolt hole structure is a sandwich structure, including a limiting bracket layer and a counterslip layer. The bolt hole structure may differ for different candidate installation areas, specifically in that at least one of the number of sandwich layers and the sandwich materials is different. In some embodiments, the bolt hole structure can be one of three sandwich structures: steel plate-aluminum alloy-aluminum alloy, steel plate-steel plate-aluminum alloy, or aluminum alloy-aluminum alloy-aluminum alloy, but it is not limited to these.

[0053] A bolt hole structure can be seen Figure 4a and Figure 4b , Figure 4a This is a partial sectional view of the bolt hole structure. Figure 4b This is a simulation model diagram of the bolt hole structure. Figure 4a and Figure 4b In the design, the bolt hole structure comprises three layers: a limiting bracket, a top cover for the clamping component, and a lower flange for the clamping component. For example... Figure 4a and Figure 4b As shown, the bolt head area (also known as the head region) and the threaded fastening area (also known as the threaded region) of the bolt are connected by rigid elements. The bolt uses beam elements to rigidly connect the upper and lower parts, thus... Figure 3bAs shown, a corresponding frictional torque needs to be applied to the bolt head, i.e., the bolt head frictional torque. This torque acts on the limiting bracket. The limiting bracket, the upper cover of the handpiece, and the screw portion are all through holes. Therefore, a tangential torque transmission occurs between the upper cover of the handpiece and the bracket, causing the limiting bracket to slip. In some embodiments, a bend can be machined on the limiting bracket to limit its movement and prevent rotation. However, if the bolt head frictional torque is too large, it can easily lead to an imbalance between the frictional force on the upper surface of the bracket layer (generated by the bolt head frictional torque) and the frictional force on the lower surface (generated by the clamping force), causing the limiting bracket to rotate. The torque is then transmitted to the contact area of ​​the limiting bend, leading to bend deformation. Therefore, to avoid deformation of the limiting bracket, it is necessary to determine the bolt type. Furthermore, the range of bolt head frictional torque can be determined. The range of bolt head frictional torque includes bolt head frictional torque that will not cause deformation of the limiting bracket; that is, tightening the bolt using bolt head frictional torque within this range will not cause deformation of the limiting bracket. Based on this, step 104 can be performed.

[0054] Step 104: Input the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model. The first plastic material parameters are used to simulate the first bolt hole structure in the first installation simulation model; the first load is used to simulate the first bolt of the first bolt type installed in the first bolt hole structure; the first simulation result includes the first displacement value of the limiting bracket.

[0055] The first plastic material parameters corresponding to the first bolt hole structure may include the plastic material parameters corresponding to each layer in the first bolt hole structure.

[0056] The first load can be understood as the frictional torque applied to the head of the first bolt of the first bolt type, i.e., the bolt head frictional torque. Therefore, the installation of the first bolt of the first bolt type can be simulated using the first load to simulate the hole structure of the first bolt. The first bolt type can be the type of first bolt determined by the user based on experience.

[0057] To enable the first installation simulation model to more realistically simulate the installation of the limiting bracket in the first candidate installation area, on the one hand, the first plastic material parameters corresponding to the first bolt hole structure can be input into the first installation simulation model to simulate the first bolt hole structure. On the other hand, the first load can be input into the first installation simulation model to simulate the installation of the first bolt of the first bolt type in the first bolt hole structure. In this way, the first installation simulation model can simulate the first candidate installation method, which involves installing the limiting bracket in the first candidate installation area using the first candidate limiting method and the first bolt of the first bolt type. Thus, the feasibility of the first candidate installation method can be evaluated through the first simulation results of the first installation simulation model.

[0058] As can be seen from the foregoing, tightening the bolts may cause slippage of the limiting bracket. Therefore, in this embodiment, the simulation results of the installation simulation model of the limiting bracket may at least include the displacement value of the limiting bracket, such as... Figure 5a As shown.

[0059] To evaluate the feasibility of candidate installation methods, evaluation criteria can be set in advance. The content of the evaluation criteria should match the content of the simulation results of the installation simulation model. Accordingly, the evaluation criteria can at least include a preset displacement threshold of the limit bracket. The preset displacement threshold is controlled according to a certain safety factor to allow a certain amount of displacement of the limit bracket. If the displacement value of the limit bracket is less than the preset displacement threshold, the limit bracket can be regarded as not deformed; otherwise, the limit bracket can be regarded as deformed.

[0060] After obtaining the first simulation result, the first simulation result can be compared with the first evaluation criterion to determine whether the first simulation result meets the first evaluation criterion.

[0061] If the first simulation result meets the first evaluation criterion, it indicates that the first candidate installation method is feasible, and step 105 can be executed.

[0062] If the first simulation result does not meet the first evaluation criterion, it indicates that the first candidate installation method is not feasible. In some embodiments, the bolt type of the first bolt can be adjusted, that is, the input first load can be changed, and the simulation can continue through the first installation simulation model; or, the candidate installation area or candidate limiting method of the limiting bracket can be adjusted, and then the installation simulation model can be re-established to continue the simulation until a candidate simulation method that meets the first evaluation criterion is obtained. For details, please refer to the relevant description below, which will not be repeated here.

[0063] Step 105: If the first simulation result meets the first evaluation criterion, output the first information, wherein the first simulation result meeting the first evaluation criterion includes: the first displacement value is less than a preset displacement threshold; the first information indicates that the first candidate limiting method is allowed in the first candidate installation area, and the first bolt of the first bolt type is used to install the limiting bracket.

[0064] If the first displacement value is less than the preset displacement threshold in step 105, it means that the limiting bracket under the first candidate installation method will not deform, the first candidate installation method is feasible, and it can be determined that the first simulation result meets the first evaluation standard.

[0065] In this case, it indicates that the first candidate installation method is feasible. Therefore, the first information can be output to indicate that the first candidate installation method is feasible, that is, to indicate that the first candidate limiting method and the first bolt of the first bolt type are allowed to be used to install the limiting bracket in the first candidate installation area. In this way, the user can use the first candidate installation method to install the limiting bracket, thereby improving the reliability of the limiting bracket installation.

[0066] This application does not limit the way information is output. The way information is output can be voice output or display output. The specific method can be set according to actual needs. This application does not limit this method.

[0067] The installation evaluation method for the limiting bracket in this embodiment, after obtaining the first candidate installation area and the first candidate limiting method of the limiting bracket, can, on the one hand, establish a first installation simulation model of the limiting bracket based on the first candidate installation area and the first candidate limiting method; on the other hand, it can determine the first bolt hole structure of the first bolt used to fix the limiting bracket based on the first candidate installation area. Then, the first plastic material parameters corresponding to the first bolt hole structure and the first load can be input into the first installation simulation model. Thus, the first bolt hole structure can be simulated in the first installation simulation model using the first plastic material parameters, and the installation of the first bolt of the first bolt type in the first bolt hole structure can be simulated using the first load. At this time, the first installation simulation model can simulate the installation of the limiting bracket in the first candidate installation area using the first candidate limiting method and the first bolt of the first bolt type. In this way, the feasibility of the installation method can be evaluated through the first simulation results of the first installation simulation model, wherein the first simulation results include at least the first displacement value of the limiting bracket. If the first simulation results meet the first evaluation criteria, it indicates that the installation method is feasible, and first information can be output, indicating that the limiting bracket can be installed in the first candidate installation area using the first candidate limiting method and the first bolt of the first bolt type. As can be seen, the embodiments of this application can simulate candidate installation methods of the limit bracket by constructing an installation simulation model of the limit bracket. In this way, the feasibility of the candidate installation methods can be evaluated by the simulation results of the installation simulation model, thereby improving the reliability of the limit bracket installation evaluation.

[0068] As described above, in some embodiments, a bend can be machined into the limiting bracket to limit its movement and prevent rotation. In these embodiments, the first candidate limiting method includes a first bend for limiting the limiting bracket, and the first bend is a component of the limiting bracket. In this case, such as Figure 5b and Figure 5c As shown, the first simulation result may further include the first plastic deformation (PEEQ) value and the first maximum principal stress value of the bend; the first simulation result satisfying the first evaluation criterion further includes: the first plastic deformation value being less than a preset plastic deformation threshold, and the first maximum principal stress value being less than a preset maximum principal stress threshold.

[0069] Plastic deformation is a type of deformation that cannot be recovered on its own. When engineering materials and components are subjected to loads exceeding their elastic deformation range, permanent deformation will occur. That is, after the load is removed, irreversible deformation, or residual deformation, will appear, which is plastic deformation. Supports are generally made of metal materials such as aluminum alloys and steel. These materials have varying degrees of plastic deformation capacity. Significant plastic deformation is generally not allowed in the design of engineering components; otherwise, the components will not be able to maintain their original shape and may even fracture, leading to structural failure.

[0070] Typical stress-strain curves for low-carbon steel (carbon content less than 0.3%) are as follows: Figure 6 As shown, it can be divided into the elastic stage OA, the yielding stage AC, the strengthening stage CD, and the necking stage DE.

[0071] Mises stress and PEEQ equivalent plastic strain are commonly used in simulations to assess the yield strength of materials. Therefore, based on empirical values, the stress during the design phase should be controlled below the yield point as much as possible. If the working conditions of the structural component are not harsh, a certain amount of deformation is allowed, and its PEEQ value should be controlled within a certain range.

[0072] Elastic stage OA: In this stage, the stress and strain have a linear relationship σ=Eε, where E is Young's modulus in MPa, which is the same as the stress. Point A is the elastic limit. Before point A, the specimen returns to its original shape after unloading. After point A, it enters the plastic stage, where there is irreversible deformation after unloading.

[0073] Yield stage AC: After point A, the typical characteristic of this stage is that the stress remains basically unchanged but the strain increases, that is, the tensile force remains basically unchanged but the specimen lengthens. This phenomenon is also known as flow. The stress-strain curve contains an upper yield limit A and a lower yield limit C. The upper yield limit is related to factors such as specimen shape and loading rate and is usually unstable; the lower yield limit is more stable, and the yield limit usually refers to the lower yield limit. The occurrence of yielding affects the performance of many products; therefore, the yield stress is often used to determine whether strength failure has occurred.

[0074] Based on this, on the one hand, a preset plastic deformation threshold can be set for the bend. The plastic deformation threshold is controlled according to a certain safety factor, allowing a certain amount of plastic deformation. If the plastic deformation value of the bend is less than the preset plastic deformation threshold, the bend can be considered undeformed; otherwise, the bend can be considered deformed.

[0075] On the other hand, a preset maximum principal stress threshold can be set for the bend. Generally, the maximum principal stress of the support structure should be kept below the material's yield strength. Therefore, the preset maximum principal stress threshold can be the stress corresponding to the material's yield point at the bend. If the maximum principal stress value of the bend is less than the preset maximum principal stress threshold, the bend can be considered undeformed; otherwise, it can be considered deformed.

[0076] In this embodiment, further evaluating the feasibility of candidate installation methods based on the maximum principal stress value and plastic deformation value of the bending angle can further improve the reliability of the limit bracket installation evaluation.

[0077] In some embodiments, after inputting the first plastic material parameters corresponding to the first bolt hole structure and the first bolt friction torque into the first installation simulation model to obtain the first simulation result of the first installation simulation model, the method further includes:

[0078] If the first simulation result does not meet the first evaluation criterion, second information is output, wherein the second information indicates that at least one of the candidate installation area and candidate limiting method of the limiting bracket should be adjusted.

[0079] In this embodiment, the first simulation result does not meet the first evaluation criterion, indicating that the first candidate installation method is not feasible. Therefore, the user can be prompted to adjust the candidate installation area and / or candidate limiting method by outputting the second information.

[0080] Adjustments to the candidate limiting method may include at least one of the following: adjusting the contact method between the limiting bracket and the opponent; adjusting the width, length, thickness, etc. of the bend of the limiting bracket.

[0081] In this way, after obtaining the second information, the user can adjust the candidate installation area and / or candidate limiting method of the limit bracket, that is, adjust the candidate installation method of the limit bracket, and redetermine the adjusted candidate installation area and / or candidate limiting method as the first candidate installation area and the first candidate limiting method, and repeat steps 101 to 105 until the adjusted candidate installation method of the limit bracket meets the requirements. In this way, the installation reliability of the limit bracket can be improved.

[0082] As mentioned above, the bolt hole structure and bolt type of the limiting bracket affect the relationship between the bolt head friction torque and the rated torque. For ease of description, the relationship between the bolt head friction torque and the rated torque will be referred to as the first relationship. The first relationship can include at least one rated torque and the bolt head friction torque corresponding to each rated torque. Therefore, the first relationship includes a range of bolt head friction torques. It is worth noting that the bolt head friction torque included in the first relationship will not cause deformation of the limiting bracket; that is, when the bolt head friction torque in the first relationship is applied to the bolt head, it will not cause deformation of the limiting bracket.

[0083] The following explains the primary relationship between the structure of each bolt hole and the corresponding bolt type.

[0084] In some embodiments, before inputting the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model, the method further includes:

[0085] Obtain N bolts, wherein the N bolts correspond to N bolt models, and the N bolt models include the first bolt model, where N is an integer greater than 1;

[0086] Establish M bolt hole structures, wherein at least one of the number of layers and the layer material of the M bolt hole structures is different, and the M bolt hole structures include the first bolt hole structure, where M is an integer greater than 1;

[0087] For each of the N bolts, the bolt is installed in each of the M bolt hole structures, and the first relationship between the bolt model and each bolt hole structure is tested. The first relationship is the relationship between the bolt head friction torque and the rated torque.

[0088] Generate a database, which includes the N bolt types and the first relationship between each bolt type and the structure of each bolt hole;

[0089] Obtain N first relationships corresponding to the first bolt hole structure from the database, wherein each of the N first relationships corresponds one-to-one with the N bolt models;

[0090] The bolt head friction torque in the first relationship in the database, which corresponds to both the first bolt model and the first bolt hole structure, is determined as the first load.

[0091] In this embodiment, N bolts of N bolt types can be tightened into each of the M bolt hole structures. Specifically, when tightening a bolt of a particular bolt type into a particular bolt hole structure, at least one bolt head friction torque can be applied to the bolt head. Through this experiment, the primary relationship between each bolt hole structure and each bolt type can be determined. Subsequently, the experimental data obtained can be used to generate a database, also known as a torque transfer database, to provide experimental data support for simulated loads.

[0092] Thus, after determining the first bolt type and the first bolt hole structure, the database can be searched to obtain the first relationship corresponding to the first bolt type and the first bolt hole structure. Then, a bolt head friction torque can be selected from the first relationship as the first load to simulate the installation effect of the first bolt of the first bolt type in the first bolt hole structure through the first load, thereby improving the reliability of the installation simulation model and thus improving the reliability of the limit bracket installation evaluation.

[0093] As can be seen from the foregoing, after determining feasible candidate installation methods, the frictional torque used to tighten the bolts is also crucial; an inappropriate frictional torque range can cause deformation of the limiting bracket. In some embodiments, before outputting the first information, provided that the first simulation result meets the first evaluation criterion, the method further includes:

[0094] The range of bolt head friction torque in the first relationship in the database that corresponds to both the first bolt model and the first bolt hole structure is determined as the first bolt head friction torque range of the first bolt.

[0095] The first information also indicates that the first bolt is installed using the friction torque range of the first bolt head.

[0096] In this embodiment, as can be seen from the foregoing, the bolt head friction torque included in the first relationship will not cause deformation of the limiting bracket. Therefore, the range of bolt head friction torque in the first relationship corresponding to the bolt type and bolt hole structure under the candidate installation method can be determined as the range of bolt head friction torque of the bolt under the candidate installation method. The bolt is tightened by using the range of bolt head friction torque through the first information, which can improve the reliability of the limiting bracket installation.

[0097] In some embodiments of this application, the evaluation criteria for the installation simulation model can be fixed. In other embodiments, after inputting the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model, and before outputting the first information when the first simulation result meets the first evaluation criteria, the method may further include:

[0098] Obtain the first working environment corresponding to the first candidate installation area;

[0099] The evaluation criteria corresponding to the first working environment are determined as the first evaluation criteria.

[0100] In this embodiment, considering that the safety factor is different in different working environments, different evaluation standards can be set for different working environments. After obtaining the first candidate installation area, the working environment corresponding to the first candidate installation area can be identified first. Then, the evaluation standard corresponding to the working environment is used as the first evaluation standard. In this way, the reliability of the limit bracket installation evaluation can be further improved.

[0101] It should be noted that the various optional implementation methods described in the embodiments of this application can be combined with each other or implemented individually without conflict, and the embodiments of this application do not limit this.

[0102] For ease of understanding, the following example is provided:

[0103] like Figure 7As shown, by building a simulation model and loading plastic material parameters and loads, the deformation of the limiting bracket can be simulated, and the PEEQ value of the plastic deformation of the bend, the maximum principal stress value, and the displacement value of the limiting bracket can be evaluated. If the evaluation criteria are met, the bolt type and friction torque range can be further determined; if not, the limiting method of the bracket, the width of the bend, the length of the bend, the thickness of the bend, and the installation area of ​​the limiting bracket can be optimized, and the simulation can be performed again. Simulation can greatly improve the reliability of the design and shorten the design cycle.

[0104] In the embodiments of this application, the installation form, bolt type and torque of the limit bracket can be matched in the early stage of design. Specifically, the reliability of the limit bracket design can be determined by simulation. This can reduce trial and error costs in the early stage, set a reasonable limit design scheme and bolt type and torque range, and avoid risks such as limit failure in the later stage.

[0105] A database of bolt force distribution for simulation can be established. Based on the torque transmission of bolt clamping surfaces with different materials and layers, the limiting part of the bracket can be simulated. In practice, bolt torque loading tests can be conducted by designing three sandwich structures corresponding to conventional thicknesses: steel plate-aluminum alloy-aluminum alloy, steel plate-steel plate-aluminum alloy, and aluminum alloy-aluminum alloy-aluminum alloy. The rotation angle and displacement of the limiting bracket can be observed and measured. Combined with the corresponding simulation analysis, a database of friction torque distribution of conventional bolt heads can be obtained. This database can be used as a reference for load parameters of various similar brackets for model calibration and input, which can greatly simplify modeling.

[0106] This application embodiment addresses the design of a limiting bracket for the air conditioning pipe system in a hybrid electric vehicle. Simulation methods can be used to evaluate its structure, bolt type, torque range, and installation area. Through preliminary reliability simulation, issues such as slippage and bending deformation of the limiting bracket during actual installation can be avoided, which could lead to limiting failure.

[0107] Based on the installation evaluation method for the limiting bracket provided in the above embodiments, this application also provides a specific implementation of the installation evaluation device for the limiting bracket. Please refer to the following embodiments.

[0108] See Figure 8 The installation evaluation device for the limiting bracket provided in this application embodiment may include:

[0109] The first acquisition module 801 is used to acquire the first candidate installation area and the first candidate limiting method of the limiting bracket;

[0110] The first establishment module 802 is used to establish a first installation simulation model of the limiting bracket based on the first candidate installation area and the first candidate limiting method.

[0111] The first determining module 803 is used to determine the first bolt hole structure for fixing the first bolt of the limiting bracket based on the first candidate installation area.

[0112] The simulation module 804 is used to input the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model. The first plastic material parameters are used to simulate the first bolt hole structure in the first installation simulation model; the first load is used to simulate the first bolt of the first bolt type installed in the first bolt hole structure; the first simulation result includes the first displacement value of the limiting bracket.

[0113] The first output module 805 is used to output first information when the first simulation result meets the first evaluation criterion, wherein the first simulation result meeting the first evaluation criterion includes: the first displacement value is less than a preset displacement threshold; the first information indicates that the first candidate limiting method and the first bolt of the first bolt type are allowed to be used to install the limiting bracket in the first candidate installation area.

[0114] In some embodiments, when the first candidate limiting method includes a first bend for limiting the limiting bracket, the first simulation result further includes a first plastic deformation value and a first maximum principal stress value of the bend; the first simulation result satisfying the first evaluation criterion further includes: the first plastic deformation value being less than a preset plastic deformation threshold, and the first maximum principal stress value being less than a preset maximum principal stress threshold.

[0115] In some embodiments, the apparatus further includes:

[0116] The second output module is used to output second information when the first simulation result does not meet the first evaluation criterion, wherein the second information indicates at least one of the candidate installation area and candidate limiting method of the limiting bracket.

[0117] In some embodiments, the apparatus further includes:

[0118] The second acquisition module is used to acquire N bolts, wherein the N bolts correspond to N bolt models, the N bolt models include the first bolt model, and N is an integer greater than 1;

[0119] The second module is used to establish M bolt hole structures, wherein at least one of the number of layers and the layer material of the M bolt hole structures is different, and the M bolt hole structures include the first bolt hole structure, where M is an integer greater than 1;

[0120] The testing module is used to install each of the N bolts into each of the M bolt hole structures, and test to obtain a first relationship between the bolt model corresponding to the bolt and each bolt hole structure. The first relationship is the relationship between the bolt head friction torque and the rated torque.

[0121] A generation module is used to generate a database, which includes the N bolt types and the first relationship between each bolt type and the structure of each bolt hole.

[0122] The third acquisition module is used to acquire N first relationships corresponding to the first bolt hole structure in the database, wherein the N first relationships correspond one-to-one with the N bolt models;

[0123] The second determining module is used to determine the bolt head friction torque in the first relationship in the database that corresponds to both the first bolt model and the first bolt hole structure as the first load.

[0124] In some embodiments, the apparatus further includes:

[0125] The third determining module is used to determine the bolt head friction torque range in the first relationship in the database that corresponds to both the first bolt model and the first bolt hole structure as the first bolt head friction torque range of the first bolt.

[0126] The first information also indicates that the first bolt is installed using the friction torque range of the first bolt head.

[0127] In some embodiments, the apparatus further includes:

[0128] The fourth acquisition module is used to acquire the first working environment corresponding to the first candidate installation area;

[0129] The fourth determining module is used to determine the evaluation standard corresponding to the first working environment as the first evaluation standard.

[0130] The installation evaluation device for the limiting bracket provided in this application embodiment can realize all the processes implemented by the installation evaluation device for the limiting bracket in the method embodiment. To avoid repetition, it will not be described again here.

[0131] Figure 9A schematic diagram of the hardware structure for evaluating the installation of the limiting bracket provided in an embodiment of this application is shown.

[0132] The installation evaluation device for the limit bracket may include a processor 901 and a memory 902 storing computer program instructions.

[0133] Specifically, the processor 901 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0134] Memory 902 may include mass storage for data or instructions. For example, and not limitingly, memory 902 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 902 may include removable or non-removable (or fixed) media. Where appropriate, memory 902 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 902 is non-volatile solid-state memory.

[0135] Memory may include read-only memory (ROM), random access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, and electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to one aspect of this disclosure.

[0136] The processor 901 reads and executes computer program instructions stored in the memory 902 to implement any of the installation evaluation methods for the limit bracket in the above embodiments.

[0137] In one example, the installation evaluation device for the limit bracket may also include a communication interface 909 and a bus 910. Wherein, as... Figure 9 As shown, the processor 901, memory 902, and communication interface 909 are connected through bus 910 and complete communication with each other.

[0138] The communication interface 909 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0139] Bus 910 includes hardware, software, or both, that couples components of the mounting evaluation equipment for the limit bracket together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 910 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0140] Furthermore, in conjunction with the installation evaluation method for the limiting bracket in the above embodiments, this application embodiment can provide a computer storage medium for implementation. This computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the installation evaluation methods for the limiting bracket in the above embodiments.

[0141] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0142] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0143] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0144] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0145] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for evaluating the installation of a limiting bracket, characterized in that, include: Obtain the first candidate installation area and the first candidate limiting method of the limiting bracket; Based on the first candidate installation area and the first candidate limiting method, a first installation simulation model of the limiting bracket is established; Based on the first candidate installation area, determine the first bolt hole structure for fixing the first bolt of the limiting bracket; The first plastic material parameters corresponding to the first bolt hole structure and the first load are input into the first installation simulation model to obtain the first simulation result of the first installation simulation model. The first plastic material parameters are used to simulate the first bolt hole structure in the first installation simulation model; the first load is used to simulate the first bolt of the first bolt type installed in the first bolt hole structure; the first simulation result includes the first displacement value of the limiting bracket. If the first simulation result meets the first evaluation criterion, first information is output, wherein the first simulation result meeting the first evaluation criterion includes: the first displacement value is less than a preset displacement threshold; the first information indicates that the first candidate limiting method and the first bolt of the first bolt type are allowed to be used to install the limiting bracket in the first candidate installation area; When the first candidate limiting method includes a first bend for limiting the limiting bracket, the first simulation result also includes the first plastic deformation value and the first maximum principal stress value of the bend; the first simulation result satisfying the first evaluation criterion also includes: the first plastic deformation value is less than a preset plastic deformation threshold, and the first maximum principal stress value is less than a preset maximum principal stress threshold. After inputting the first plastic material parameters corresponding to the first bolt hole structure and the first bolt friction torque into the first installation simulation model to obtain the first simulation result of the first installation simulation model, the method further includes: If the first simulation result does not meet the first evaluation criterion, second information is output, wherein the second information indicates that at least one of the candidate installation area and candidate limiting method of the limiting bracket should be adjusted.

2. The method according to claim 1, characterized in that, Before inputting the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model, the method further includes: Obtain N bolts, wherein the N bolts correspond to N bolt models, and the N bolt models include the first bolt model, where N is an integer greater than 1; Establish M bolt hole structures, wherein at least one of the number of layers and the layer material of the M bolt hole structures is different, and the M bolt hole structures include the first bolt hole structure, where M is an integer greater than 1; For each of the N bolts, the bolt is installed in each of the M bolt hole structures, and the first relationship between the bolt model and each bolt hole structure is tested. The first relationship is the relationship between the bolt head friction torque and the rated torque. Generate a database, which includes the N bolt types and the first relationship between each bolt type and the structure of each bolt hole; Obtain N first relationships corresponding to the first bolt hole structure from the database, wherein each of the N first relationships corresponds one-to-one with the N bolt models; The bolt head friction torque in the first relationship in the database, which corresponds to both the first bolt model and the first bolt hole structure, is determined as the first load.

3. The method according to claim 2, characterized in that, Before outputting the first information, provided that the first simulation result meets the first evaluation criterion, the method further includes: The range of bolt head friction torque in the first relationship in the database that corresponds to both the first bolt model and the first bolt hole structure is determined as the first bolt head friction torque range of the first bolt. The first information also indicates that the first bolt is installed using the friction torque range of the first bolt head.

4. The method according to claim 1, characterized in that, After inputting the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model, and before outputting the first information when the first simulation result meets the first evaluation criterion, the method further includes: Obtain the first working environment corresponding to the first candidate installation area; The evaluation criteria corresponding to the first working environment are determined as the first evaluation criteria.

5. An installation evaluation device for a limiting bracket, characterized in that, The device includes: The first acquisition module is used to acquire the first candidate installation area and the first candidate limiting method of the limiting bracket; The first establishment module is used to establish a first installation simulation model of the limiting bracket based on the first candidate installation area and the first candidate limiting method. The first determining module is used to determine the first bolt hole structure for fixing the first bolt of the limiting bracket based on the first candidate installation area. The simulation module is used to input the first plastic material parameters corresponding to the first bolt hole structure and the first load into the first installation simulation model to obtain the first simulation result of the first installation simulation model. The first plastic material parameters are used to simulate the first bolt hole structure in the first installation simulation model; the first load is used to simulate the first bolt of the first bolt type installed in the first bolt hole structure; the first simulation result includes the first displacement value of the limiting bracket. The first output module is configured to output first information when the first simulation result meets the first evaluation criterion, wherein the first simulation result meeting the first evaluation criterion includes: the first displacement value being less than a preset displacement threshold; the first information indicates that the first candidate limiting method and the first bolt of the first bolt type are allowed to be used to install the limiting bracket in the first candidate installation area; when the first candidate limiting method includes a first bend angle for limiting the limiting bracket, the first simulation result also includes a first plastic deformation value and a first maximum principal stress value of the bend angle; the first simulation result meeting the first evaluation criterion further includes: the first plastic deformation value being less than a preset plastic deformation threshold, and the first maximum principal stress value being less than a preset maximum principal stress threshold; and is further configured to output second information when the first simulation result does not meet the first evaluation criterion, wherein the second information indicates that at least one of the candidate installation area and the candidate limiting method of the limiting bracket should be adjusted.

6. An installation evaluation device for a limiting bracket, characterized in that, The device includes: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, it implements the installation evaluation method of the limit bracket as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the installation evaluation method for the limit bracket as described in any one of claims 1 to 4.

8. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device performs the installation evaluation method for the limit bracket as described in any one of claims 1 to 4.

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