Cylinder block reinforcement plate optimization method, device, electronic device and storage medium

Abstract

The present invention discloses a cylinder block reinforcement plate optimization method, device, electronic device and storage medium, wherein the method comprises: obtaining initial performance indicators of an initial cylinder block, the initial performance indicators comprising modal parameters, vibration parameters and noise parameters; determining indicators to be optimized based on the initial performance indicators and expected targets, the indicators to be optimized comprising modal parameter correction values, vibration parameter correction values ​​and noise parameter correction values; determining structural design variables of the reinforcement plate using the indicators to be optimized; optimizing the structural design variables using optimization analysis based on mass constraints of the reinforcement plate and the indicators to be optimized, and obtaining manufacturing parameters of the reinforcement plate, which can be used in the vibration reduction and noise reduction design process of the cylinder block reinforcement plate of all diesel engines to meet lightweight and NVH performance.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a cylinder block reinforcement plate optimization method, device, electronic equipment and storage medium. Background Art

[0002] With the emission upgrade, the design explosion pressure continues to increase. If the rigidity of the cylinder block as a whole or in a specific area is insufficient, abnormal vibration and noise of the whole machine will occur, resulting in customer complaints or failure to meet the NVH design indicators. Due to the contradiction with the whole machine lightweight indicator, whether the gantry cylinder block should have a cylinder block reinforcement plate and how to design it to ensure excellent whole machine vibration and noise has become a problem.

[0003] Therefore, how to optimize the cylinder block reinforcement plate to reduce vibration and noise has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve the technical problem of how to optimize the cylinder block reinforcement plate to reduce vibration and noise as described in the above background technology, the present invention provides a cylinder block reinforcement plate optimization method, device, electronic device and storage medium.

[0005] According to the first aspect, an embodiment of the present application provides a method for optimizing a cylinder block reinforcement plate, which obtains initial performance indicators of an initial cylinder block, wherein the initial performance indicators include modal parameters, vibration parameters, and noise parameters; determines indicators to be optimized based on the initial performance indicators and expected goals, wherein the indicators to be optimized include modal parameter correction values, vibration parameter correction values, and noise parameter correction values; determines structural design variables of the reinforcement plate using the indicators to be optimized; optimizes the structural design variables using optimization analysis based on mass constraints of the reinforcement plate and the indicators to be optimized, and obtains manufacturing parameters of the reinforcement plate.

[0006] Optionally, the structural design variables are optimized by using optimization analysis based on the quality constraint of the reinforcement plate and the index to be optimized to obtain the manufacturing parameters of the reinforcement plate, including: constructing a plurality of sub-objective functions based on the index to be optimized and the structural design variables, the sub-objective functions being functions with the index to be optimized as the target and the structural design variables as the variable; constructing a multi-objective weighted function with the plurality of sub-objective functions; interpreting the multi-objective weighted function by using topology optimization analysis to obtain intermediate structural parameters and intermediate process parameters of the reinforcement plate; and locally optimizing the intermediate structural parameters and intermediate process parameters based on the quality constraint and process constraint of the reinforcement plate to obtain the manufacturing parameters.

[0007] Optionally, constructing a multi-objective weighted function using the multiple sub-objective functions includes: determining the weighting coefficient of each indicator to be optimized in the multi-objective weighted function based on the distribution of each indicator to be optimized in the initial performance indicator; and constructing the multi-objective weighted function based on the weighting coefficient.

[0008] Optionally, the use of topology optimization analysis to interpret the multi-objective weighted function to obtain intermediate structural parameters and intermediate process parameters of the reinforcement plate includes: performing topology optimization analysis on a given design area of ​​the reinforcement plate based on the quality constraint conditions using the multi-objective weighted function to obtain layout results of the structural parameters of the reinforcement plate; and constructing a first model of the reinforcement plate based on the layout results, the first model including the intermediate structural parameters and intermediate process parameters of the reinforcement plate.

[0009] Optionally, the intermediate structural parameters and intermediate process parameters are locally optimized based on the quality constraints and process constraints of the reinforcement plate to obtain the manufacturing parameters, including: setting optimization factors and optimization factor limits based on the quality constraints and the reinforcement plate manufacturing process; constructing a gradient optimization model based on the optimization factors and optimization factor limits; and locally optimizing the first model according to the gradient optimization model to obtain the second model.

[0010] Optionally, determining the indicator to be optimized based on the initial performance indicator and the expected target includes: judging whether the initial performance indicator meets the expected target; when the initial performance indicator does not meet the expected target, identifying the key parameters of the indicator to be optimized; the key parameters include: key frequencies and vibration shapes in modal vibrations; vibration order information exceeding a preset vibration order, abnormal vibration frequency band exceeding a preset vibration frequency band, and noise order information exceeding a preset noise order, abnormal noise frequency band exceeding a preset frequency band; determining the indicator to be optimized based on the key parameters and the expected target.

[0011] Optionally, the obtaining of initial performance indicators of the initial cylinder block includes: performing modal analysis, vibration analysis and noise analysis on the initial cylinder block using a finite element model to obtain the initial performance indicators; the determining of the structural design variables of the reinforcement plate using the indicators to be optimized includes: determining the corresponding finite elements of the indicators to be optimized; determining the structural factors that generate the indicators to be optimized based on the corresponding finite elements of the indicators to be optimized; and determining the structural design variables based on the structural factors.

[0012] According to a second aspect, an embodiment of the present application provides a cylinder block reinforcement plate optimization device, comprising: an acquisition module, for acquiring initial performance indicators of an initial cylinder block, wherein the initial performance indicators include modal parameters, vibration parameters, and noise parameters;

[0013] The first determination module is used to determine the indicators to be optimized based on the initial performance indicators and the expected goals, and the indicators to be optimized include modal parameter correction values, vibration parameter correction values ​​and noise parameter correction values; the second determination module is used to determine the structural design variables of the reinforcement plate using the indicators to be optimized; the optimization module is used to optimize the structural design variables using optimization analysis based on the mass constraints of the reinforcement plate and the indicators to be optimized, so as to obtain the manufacturing parameters of the reinforcement plate.

[0014] According to the third aspect, an embodiment of the present application provides an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the cylinder block reinforcement plate optimization method as described in any one of the first aspects.

[0015] According to a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the cylinder block reinforcement plate optimization method described in any one of the first aspects above is implemented.

[0016] The present application obtains initial performance indicators of an initial cylinder block, wherein the initial performance indicators include modal parameters, vibration parameters and noise parameters; determines indicators to be optimized based on the initial performance indicators and expected goals, wherein the indicators to be optimized include modal parameter correction values, vibration parameter correction values ​​and noise parameter correction values; determines the structural design variables of the reinforcement plate using the indicators to be optimized; optimizes the structural design variables using optimization analysis based on the mass constraint conditions of the reinforcement plate and the indicators to be optimized, and obtains the manufacturing parameters of the reinforcement plate, which can be used in the vibration and noise reduction design process of the cylinder reinforcement plate of all diesel engines to meet the lightweight and NVH performance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a schematic diagram of a hardware environment of an optional cylinder block reinforcement plate optimization method according to an embodiment of the present invention;

[0019] Figure 2 is a schematic flow chart of an optional cylinder block reinforcement plate optimization method according to an embodiment of the present application;

[0020] Figure 3is a schematic flow chart of another optional cylinder block reinforcement plate optimization method according to an embodiment of the present application;

[0021] Figure 4 is a structural block diagram of an optional cylinder block reinforcement plate optimization device according to an embodiment of the present application;

[0022] Figure 5 It is a structural block diagram of an optional electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals represent components with the same structure or similar structures but the same functions.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] The cylinder block reinforcement plate optimization method of the present application can be applied to Figure 1 In the hardware environment shown in the figure. Figure 1 As shown:

[0026] The server 104 is connected to the terminal 102 through a network, and can be used to provide services for the terminal or the client installed on the terminal. A database can be set on the server or independently of the server to provide data storage services for the server 104, and can also be used to process cloud services. The above network includes but is not limited to: wide area network, metropolitan area network or local area network, and the terminal 102 is not limited to PC, mobile phone, tablet computer, etc. The cylinder block reinforcement plate optimization method of the embodiment of the present application can be executed by the server 104, or by the terminal 102, or by the server 104 and the terminal 102. Among them, the cylinder block reinforcement plate optimization method of the embodiment of the present application can also be executed by the client installed on the terminal 102.

[0027] Taking the cylinder block reinforcement plate optimization method in this embodiment executed by the terminal 102 and / or the server 104 as an example, Figure 2 is a flow chart of a cylinder block reinforcement plate optimization method according to an embodiment of the present application, such as Figure 2 As shown, the process of the method may include the following steps:

[0028] S201. Obtain the initial performance indicators of the initial cylinder block, the initial performance indicators including modal parameters, vibration parameters and noise parameters. As an exemplary embodiment, the initial model of the cylinder block, that is, the cylinder block without the reinforcement plate, is used as the initial model to perform modal analysis, multi-body dynamics analysis and noise analysis of the whole machine, and the modal parameters, vibration parameters and noise parameters of the initial cylinder block state are respectively obtained. In this embodiment, the vibration mode and frequency in the modal parameters can be obtained; the vibration spectrum in the vibration parameters, for example, vibration order information, vibration frequency band and other information; the noise spectrum in the noise parameters, for example, noise order information, noise frequency band and other information. Exemplarily, a finite element model can be used for analysis, the cylinder block or the whole machine can be discretized into finite elements, and modal analysis, vibration analysis and noise analysis can be performed on each unit.

[0029] S202. Determine the index to be optimized based on the initial performance index and the expected target, and the index to be optimized includes the modal parameter correction value, the vibration parameter correction value and the noise parameter correction value. As an exemplary embodiment, after obtaining the initial performance index, the initial performance index can be compared with the expected target to obtain an abnormal index, that is, to obtain a key abnormal parameter whose corresponding parameter is no longer within the preset range, for example, the frequency or vibration type in the modal parameter exceeds the preset range, the abnormal vibration order, abnormal vibration frequency or abnormal vibration period in the vibration parameter exceeds the preset range, and the abnormal vibration frequency band and the period of the abnormal vibration frequency band are determined by combining the abnormal vibration frequency; the abnormal noise order, abnormal noise frequency or abnormal noise period in the noise parameter exceeds the preset range, and the abnormal noise frequency band and the period of the abnormal noise frequency band are determined by combining the abnormal noise frequency. Exemplarily, the energy of the cylinder block vibration noise is mainly distributed in the resonance frequency band or in the engine's ignition order and harmonic orders (such as the ignition and harmonic order components of a four-cylinder four-stroke engine are 2nd, 4th, 6th... orders, and the ignition and harmonic order components of a six-cylinder four-stroke engine are 3rd, 6th, 9th... orders), and as the engine speed changes, the frequencies corresponding to the ignition order and harmonic orders will change accordingly.

[0030] After the abnormal parameters are obtained, the index to be optimized is calculated based on the expected target. For example, after the abnormal vibration order is obtained, the value of the order information to be optimized can be calculated based on the expected target vibration order; for another example, after the abnormal vibration frequency is obtained, the difference of the vibration frequency to be optimized is calculated based on the target vibration frequency. In this embodiment, the index to be optimized may include: modal parameter correction values, vibration parameter correction values ​​and noise parameter correction values, such as the key frequency and vibration mode of the cylinder body; order information in the vibration spectrum, the bandwidth or period corresponding to the abnormal vibration; order information in the noise spectrum, the bandwidth corresponding to the abnormal noise vibration or other sound quality parameters correction values.

[0031] S203. Determine the structural design variables of the reinforcing plate using the index to be optimized. As an exemplary embodiment, the abnormality of the initial performance index is caused by the cylinder block or the structural parameters of the whole machine. Therefore, the structural factors that cause the abnormality can be analyzed based on the index to be optimized, and the structure that needs to be strengthened can be determined based on the structural factors, thereby obtaining the structural design variables of the reinforcing plate, exemplarily, the number of cylinders covered by the reinforcing plate, the distribution of the reinforcing ribs, and the number of reinforcing ribs in each area. As an optional embodiment, it can also include the amount of material of the reinforcing plate in each area.

[0032] S204. Based on the mass constraint of the reinforcement plate and the index to be optimized, the structural design variables are optimized by using optimization analysis to obtain the manufacturing parameters of the reinforcement plate. As an exemplary embodiment, after determining the index to be optimized and the structural design variables, the structural design variables are solved with the mass constraint, i.e., the lightweight design requirement, to obtain the manufacturing parameters of the reinforcement plate, which may include the structural parameters of the reinforcement plate, such as the number of cylinders covered by the reinforcement plate, the detailed layout of the reinforcement ribs, etc.; the amount of materials used, such as the thickness of the reinforcement plate corresponding to each cylinder block, the overall thickness of the reinforcement plate; and the manufacturing process of the reinforcement plate, including stamping, forging and other process methods. In this embodiment, when optimizing the cylinder block, the mass constraint condition and the structural design variables of the index to be optimized are optimized, and then the structural design variables corresponding to the modal parameters of the cylinder block can be designed in a targeted manner to avoid the engine excitation frequency; the corresponding structural design variables are designed in a targeted manner to control the energy distribution of the cylinder block vibration in the medium and low frequencies, and the energy distribution of each order component mainly distributed in the medium and low frequency bands; the corresponding structural design variables are designed in a targeted manner to control the energy distribution of each order component of the cylinder block noise in the medium and high frequency bands, and the energy distribution of each order component distributed in the medium and high frequency bands. This ensures that the engine reaches the expected NVH level.

[0033] As an optional embodiment, when optimizing the structural design variables based on the mass constraint condition of the reinforcement plate and the index to be optimized by using optimization analysis, it can be referred to Figure 3 Steps shown:

[0034] S301. Construct multiple sub-objective functions based on the index to be optimized and the structural design variables, wherein the sub-objective functions are functions with the index to be optimized as the target and the structural design variables as the variables. As an exemplary embodiment, in the process of modal calculation of the initial model of the cylinder block, vibration response calculation of the whole machine and the cylinder block, and noise calculation of the whole machine and the cylinder block, it is identified whether the NVH performance index of the initial model of the cylinder block can meet the expected NVH target value without the reinforcement plate. If not, it is necessary to identify the key parameters corresponding to each sub-objective function; the parameters include the key frequency and vibration mode of the cylinder block; the order information in the vibration spectrum, the bandwidth or period corresponding to the abnormal vibration; the order information in the noise spectrum, the bandwidth or other sound quality parameters corresponding to the abnormal noise vibration. After determining the key parameters with abnormalities, the sub-objective function corresponding to each abnormal key parameter can be constructed with the gap between the abnormal key parameter and the expected target value as the target, the reinforcement plate design variable corresponding to the abnormal key parameter as the variable, and the preset constraint condition as the constraint.

[0035] S302. Construct a multi-objective weighted function with the multiple sub-objective functions. As an exemplary embodiment, a multi-objective weighted function of multiple sub-objective functions is constructed based on a weighted method. In this embodiment, the target of the multi-objective weighted function is the NVH expected target, and the variables are the targets of multiple sub-functions. Exemplarily, the weighted target OPT(rp) of the cylinder block reinforcement plate design can be quantitatively described as follows:

[0036] OPT(rp)=α×modal+β×Order+δ×Bandwidth+γ×SQ+τ

[0037] In the formula, α, β, λ, γ, τ are coefficient terms; Modal represents the modal frequency and vibration type of the cylinder block; Order represents the main order component of abnormal vibration or noise; Bandwidth represents the bandwidth of abnormal vibration or noise; SQ represents other uncomfortable sound qualities, such as linearity, loudness, etc. As an optional embodiment, for constructing a multi-objective weighted function, the weight coefficient of each of the indicators to be optimized in the multi-objective weighted function can be determined based on the distribution of each of the indicators to be optimized in the initial performance indicators; and the multi-objective weighted function is constructed based on the weight coefficients.

[0038] As an illustrative example, the cylinder block modal parameters are designed for the optimization of the reinforcement plate to avoid the engine excitation frequency; the energy distribution of the cylinder block vibration in the medium and low frequencies, and the energy distribution of the various order components mainly distributed in the medium and low frequency bands; the energy distribution of the cylinder block noise in the medium and high frequency bands, and the energy distribution distributed in the medium and high frequency bands. Therefore, the distribution of abnormal parameters in the initial performance index and the attribute information of each parameter determine the weighting coefficient of each sub-objective function. For example, if the abnormal parameters in the initial performance index are distributed in a large proportion in high frequencies, the weighting coefficient of the noise objective function can be appropriately increased, and if the abnormal parameters in the initial performance index are distributed in a large proportion in low frequencies, the weighting coefficient of the vibration objective function can be appropriately increased.

[0039] As an optional embodiment, the weighting coefficient can also be determined based on the contribution of each sub-objective function to the weighted target of the cylinder block reinforcement plate design. For example, the contribution can be determined by solving the optimal structural design parameters corresponding to each sub-objective function and verifying the weighted target improvement quality based on the optimal structural design parameters.

[0040] S303. Use topology optimization analysis to interpret the multi-objective weighted function to obtain the intermediate structural parameters and intermediate process parameters of the reinforcement plate. As an exemplary embodiment, the given design area of ​​the reinforcement plate can be subjected to topology optimization analysis based on the quality constraint conditions and the multi-objective weighted function to obtain the layout results of the structural parameters of the reinforcement plate; based on the layout results, a first model of the reinforcement plate is constructed, and the first model includes the intermediate structural parameters and intermediate process parameters of the reinforcement plate. Set the maximum initial design space of the body reinforcement plate, and perform topology optimization analysis. The goal is to obtain the optimal solution that satisfies the multi-objective weighted function, optimize the number of cylinders covered by the reinforcement plate, the detailed layout results of the reinforcement ribs, and construct a three-dimensional design intermediate model of the cylinder block and the reinforcement plate based on the results.

[0041] As an exemplary embodiment, according to the above formula, the essence of the cylinder block reinforcement plate design is to design the cylinder block modal parameters in a targeted manner to avoid the engine excitation frequency; control the energy distribution of the cylinder block vibration in the medium and low frequencies, and the energy distribution of each order component mainly distributed in the medium and low frequency bands; control the energy distribution of the cylinder block noise in the medium and high frequency bands, and the energy distribution distributed in the medium and high frequency bands. Then determine the structural design parameters and process manufacturing parameters of the reinforcement plate that can achieve the above design goals or control goals.

[0042] S304. Based on the quality constraint and process constraint of the reinforcement plate, the intermediate structural parameters and intermediate process parameters are locally optimized to obtain the manufacturing parameters. The upper and lower limits of the local optimization factor are set, and the local optimization is performed according to the gradient optimization algorithm. The NVH simulation verification is re-performed according to the optimization result, and the three-dimensional model of the cylinder volume reinforcement plate is finally finalized, thereby completing the design process of the cylinder body reinforcement plate.

[0043] As an exemplary embodiment, the optimization factors and optimization factor limits are set based on the quality constraints and the reinforcement plate manufacturing process; a gradient optimization model is constructed based on the optimization factors and optimization factor limits; and the first model is locally optimized according to the gradient optimization model to obtain the second model.

[0044] For example, when performing gradient optimization, the gradient optimization mathematical model is determined after comprehensively considering NVH performance, lightweight goals, and manufacturing work processes:

[0045] Minf(X)orMin(Max(f(X)))

[0046] f(X) = f(x 1 ,x 2 ,…x n )

[0047] Constraint function:

[0048]

[0049] Where, X) = (x 1 ,x 2 ,…x n ) is the design variable, f(X) is the design objective function; g j (X) and l k (X) are constraint functions, n is the number of design variable components, for example, it can be the thickness of the reinforcement plate, the height of the rib plate, the density, the number of mounting bolts, etc., L is the lower limit of the parameter; U is the upper limit of the parameter.

[0050] In this embodiment, the constraint function corresponding to the mass constraint condition can be that the difference between the design mass of the reinforcement plate and the lightweight target should be less than or equal to 0, and the difference between the manufacturing process and the feasibility of the manufacturing process should be equal to 0. In this way, the first model is partially improved to meet the lightweight target and manufacturability requirements while meeting the NVH requirements.

[0051] In this embodiment, firstly, it is identified whether there is abnormal engine vibration, noise frequency band and its correlation with cylinder block structural parameters, and a multi-objective weighted function is extracted. The topology optimization method is used to meet the optimal solution of the multi-objective weighted function, and a three-dimensional design intermediate model of the cylinder block and reinforcement plate is constructed. Then, local optimization is performed according to the local gradient optimization algorithm, and finally the three-dimensional model of the cylinder volume reinforcement plate is finalized to ensure that the engine reaches the expected NVH level.

[0052] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0053] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), a disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0054] According to another aspect of an embodiment of the present application, a cylinder block reinforcement plate optimization device for implementing the above-mentioned cylinder block reinforcement plate optimization method is also provided. Figure 4 is a schematic diagram of an optional cylinder block reinforcement plate optimization device according to an embodiment of the present application, such as Figure 4 As shown, the device may include:

[0055] An acquisition module 401 is used to acquire initial performance indicators of an initial cylinder body, wherein the initial performance indicators include modal parameters, vibration parameters and noise parameters;

[0056] A first determination module 402 is used to determine an indicator to be optimized based on the initial performance indicator and the expected target, wherein the indicator to be optimized includes a modal parameter correction value, a vibration parameter correction value, and a noise parameter correction value;

[0057] A second determination module 403 is used to determine the structural design variables of the reinforcement plate using the index to be optimized;

[0058] The optimization module 404 is used to optimize the structural design variables by using optimization analysis based on the mass constraint conditions of the reinforcement plate and the index to be optimized, so as to obtain the manufacturing parameters of the reinforcement plate.

[0059] It should be noted that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the contents disclosed in the above embodiments. It should be noted that the above modules as part of the device can be run in Figure 1 In the hardware environment shown, it can be implemented by software or by hardware, wherein the hardware environment includes a network environment.

[0060] According to another aspect of an embodiment of the present application, there is also provided an electronic device for implementing the above-mentioned cylinder block reinforcement plate optimization method. The electronic device may be a server, a terminal, or a combination thereof.

[0061] Figure 5 is a structural block diagram of an optional electronic device according to an embodiment of the present application, such as Figure 5 As shown, it includes a processor 502, a communication interface 504, a memory 506 and a communication bus 508, wherein the processor 502, the communication interface 504 and the memory 506 communicate with each other through the communication bus 508, wherein,

[0062] Memory 506, used for storing computer programs;

[0063] The processor 502 is used to execute the computer program stored in the memory 506 to implement the following steps:

[0064] Acquiring initial performance indicators of an initial cylinder body, wherein the initial performance indicators include modal parameters, vibration parameters, and noise parameters;

[0065] Determining an index to be optimized based on the initial performance index and the expected target, the index to be optimized comprising a modal parameter correction value, a vibration parameter correction value and a noise parameter correction value;

[0066] Determining the structural design variables of the reinforcement plate using the index to be optimized;

[0067] The structural design variables are optimized using optimization analysis based on the mass constraint conditions of the reinforcement plate and the index to be optimized to obtain the manufacturing parameters of the reinforcement plate.

[0068] Optionally, in this embodiment, the communication bus may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0069] The communication interface is used for communication between the above electronic device and other devices.

[0070] The memory may include RAM, or may include non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0071] As an example, Figure 5 As shown, the memory 502 may include, but is not limited to, the acquisition module 401, the first determination module 402, the second determination module 403, and the optimization module 404 in the cylinder block reinforcement plate optimization device. In addition, it may also include, but is not limited to, other module units in the engine combustion condition detection device, which will not be repeated in this example.

[0072] The above-mentioned processor can be a general-purpose processor, which can include but not be limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; it can also be DSP (Digital Signal Processing), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or other programmable logic devices, separate gates or transistor logic devices, separate hardware components.

[0073] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0074] It can be understood by those skilled in the art that Figure 5The structure shown is for illustration only. The device for implementing the above-mentioned cylinder block reinforcement plate optimization method may be a terminal device, which may be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a PDA, a mobile Internet device (Mobile Internet Devices, MID), a PAD, and other terminal devices. Figure 5 It does not limit the structure of the above electronic device. For example, the terminal device may also include Figure 5 More or fewer components (such as network interfaces, display devices, etc.) shown in, or having Figure 5 Different configurations shown.

[0075] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the hardware related to the terminal device through a program, and the program can be stored in a computer-readable storage medium, which can include: a flash drive, ROM, RAM, a magnetic disk or an optical disk, etc.

[0076] According to another aspect of the embodiment of the present application, a storage medium is also provided. Optionally, in this embodiment, the storage medium can be used to execute the program code of the cylinder block reinforcement plate optimization method.

[0077] Optionally, in this embodiment, the storage medium may be located on at least one network device among a plurality of network devices in the network shown in the above embodiment.

[0078] Optionally, in this embodiment, the storage medium is configured to store program codes for executing the following steps:

[0079] Acquiring initial performance indicators of an initial cylinder body, wherein the initial performance indicators include modal parameters, vibration parameters, and noise parameters;

[0080] Determining an index to be optimized based on the initial performance index and the expected target, the index to be optimized comprising a modal parameter correction value, a vibration parameter correction value and a noise parameter correction value;

[0081] Determining the structural design variables of the reinforcement plate using the index to be optimized;

[0082] The structural design variables are optimized using optimization analysis based on the mass constraint conditions of the reinforcement plate and the index to be optimized to obtain the manufacturing parameters of the reinforcement plate.

[0083] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, which will not be described in detail in this embodiment.

[0084] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media that can store program codes, such as a USB flash drive, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk.

[0085] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0086] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

[0087] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0088] In the several embodiments provided in the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0089] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.

[0090] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0091] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for optimizing a cylinder block reinforcement plate, characterized in that: include: Acquiring initial performance indicators of an initial cylinder body, wherein the initial performance indicators include modal parameters, vibration parameters, and noise parameters; Determining an index to be optimized based on the initial performance index and the expected target, the index to be optimized comprising a modal parameter correction value, a vibration parameter correction value and a noise parameter correction value; Determining the structural design variables of the reinforcement plate using the index to be optimized; Based on the mass constraint condition of the reinforcement plate and the index to be optimized, the structural design variables are optimized by using optimization analysis to obtain the manufacturing parameters of the reinforcement plate; The method of optimizing the structural design variables by using optimization analysis based on the mass constraint conditions of the reinforcement plate and the index to be optimized to obtain the manufacturing parameters of the reinforcement plate includes: Constructing a plurality of sub-objective functions based on the index to be optimized and the structural design variables, wherein the sub-objective functions are functions with the index to be optimized as the target and the structural design variables as the variables; Constructing a multi-objective weighted function with the multiple sub-objective functions; The multi-objective weighted function is interpreted by topology optimization analysis to obtain intermediate structural parameters and intermediate process parameters of the reinforced plate; Performing local optimization on the intermediate structural parameters and intermediate process parameters based on the quality constraint conditions and process constraint conditions of the reinforcement plate to obtain the manufacturing parameters; The constructing a multi-objective weighted function with the multiple sub-objective functions comprises: Determining a weighting coefficient of each of the indicators to be optimized in the multi-objective weighting function based on the distribution of each of the indicators to be optimized in the initial performance indicators; Constructing the multi-objective weighted function based on the weighted coefficients; The multi-objective weighted function is interpreted by topology optimization analysis to obtain intermediate structural parameters and intermediate process parameters of the reinforcement plate, including: Based on the mass constraint condition, a topology optimization analysis is performed on a given design area of ​​the reinforcement plate using the multi-objective weighted function to obtain a layout result of the reinforcement plate structural parameters; A first model of the reinforcement plate is constructed based on the layout result, wherein the first model includes intermediate structural parameters and intermediate process parameters of the reinforcement plate.

2. The cylinder block reinforcement plate optimization method according to claim 1, characterized in that: Based on the quality constraint and process constraint of the reinforcement plate, the intermediate structural parameters and intermediate process parameters are locally optimized to obtain the manufacturing parameters including: Setting the optimization factor and the optimization factor limit according to the quality constraint condition and the reinforcement plate manufacturing process; Constructing a gradient optimization model based on the optimization factors and the optimization factor limits; The first model is locally optimized according to the gradient optimization model to obtain a second model, wherein the second model includes the production parameters.

3. The cylinder block reinforcement plate optimization method according to claim 1, characterized in that: Determining the indicator to be optimized based on the initial performance indicator and the expected target includes: Determining whether the initial performance indicators meet the expected goals; When the initial performance index does not meet the expected target, identify the key parameters of the index to be optimized; the key parameters include: key frequencies and vibration shapes in modal vibration; vibration order information exceeding the preset vibration order, abnormal vibration frequency band exceeding the preset vibration frequency band, and noise order information exceeding the preset noise order, abnormal noise frequency band exceeding the preset frequency band; The indicator to be optimized is determined based on the key parameters and the expected target.

4. The cylinder block reinforcement plate optimization method according to claim 1, characterized in that: The obtaining of the initial performance index of the initial cylinder block comprises: Performing modal analysis, vibration analysis and noise analysis on the initial cylinder block using a finite element model to obtain the initial performance index; Determining the structural design variables of the reinforcement plate by using the index to be optimized includes: Determine the finite element corresponding to the index to be optimized; Determine the structural factors that generate the index to be optimized based on the finite element corresponding to the index to be optimized; The structural design variables are determined based on the structural factors.

5. A cylinder block reinforcement plate optimization device, characterized in that: include: An acquisition module, used for acquiring initial performance indicators of an initial cylinder body, wherein the initial performance indicators include modal parameters, vibration parameters and noise parameters; A first determination module is used to determine an indicator to be optimized based on the initial performance indicator and the expected target, wherein the indicator to be optimized includes a modal parameter correction value, a vibration parameter correction value, and a noise parameter correction value; A second determination module is used to determine the structural design variables of the reinforcement plate using the index to be optimized; An optimization module, used to optimize the structural design variables by using optimization analysis based on the mass constraint conditions of the reinforcement plate and the index to be optimized, so as to obtain the manufacturing parameters of the reinforcement plate; The optimization module is further used to construct a plurality of sub-objective functions based on the index to be optimized and the structural design variables, wherein the sub-objective functions are functions with the index to be optimized as the target and the structural design variables as the variables; Constructing a multi-objective weighted function with the multiple sub-objective functions; The multi-objective weighted function is interpreted by topology optimization analysis to obtain intermediate structural parameters and intermediate process parameters of the reinforcement plate; the intermediate structural parameters and intermediate process parameters are locally optimized based on the quality constraints and process constraints of the reinforcement plate to obtain the manufacturing parameters; The optimization module is further used to determine the weighting coefficient of each of the indicators to be optimized in the multi-objective weighted function based on the distribution of each of the indicators to be optimized in the initial performance indicators; and construct the multi-objective weighted function based on the weighting coefficients; The optimization module is further used to perform topology optimization analysis on a given design area of ​​the reinforcement plate based on the mass constraint condition and the multi-objective weighted function to obtain a layout result of the reinforcement plate structural parameters; A first model of the reinforcement plate is constructed based on the layout result, wherein the first model includes intermediate structural parameters and intermediate process parameters of the reinforcement plate.

6. An electronic device, characterized in that: The electronic device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the cylinder block reinforcement plate optimization method according to any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the cylinder block reinforcement plate optimization method according to any one of claims 1 to 4 is implemented.

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