Modal frequency avoidance method, device and storage medium based on mass discretization model

Abstract

The present application discloses a modal frequency avoidance method, a computer device and a computer-readable storage medium based on a mass discretization model. The method comprises: dividing a modifiable region of a structural member into blocks based on a mass discretization model to obtain a plurality of modifiable blocks; obtaining modal frequency values ​​of each modifiable block according to setting the thickness of each modifiable block; determining the optimal thickness of the modifiable block for frequency avoidance according to the modal frequency values ​​of each modifiable block, thereby achieving frequency avoidance by designing with the optimal thickness of the modifiable block.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a modal frequency avoidance method based on a mass discretization model, a computer device, and a computer-readable storage medium. Background Art

[0002] With the popularity of high-end cars, consumers have higher and higher requirements for various performance indicators of cars, hoping to have a more comfortable and stable riding experience and a quieter riding environment. In this context, the NVH performance of cars is increasingly valued by manufacturers. The NVH performance indicators (modal frequency indicators) of vehicles are usually gradually decomposed from the vehicle level to the system level and component level.

[0003] It can be seen from the vibration equation that vibration is only related to mass, stiffness and damping. In the modal frequency design of chassis structural parts, the common practice is to rely on the simulated modal formation and modal strain energy distribution, combined with design experience to give a variety of optimization schemes to change the mass and isotropic stiffness, but it is impossible to find the optimal frequency avoidance method. Summary of the invention

[0004] The main purpose of this application is to provide a modal frequency avoidance method, computer equipment and computer-readable storage medium based on a mass discretization model, aiming to solve the technical problem that the existing modal formation and modal strain energy distribution after simulation are used to provide a variety of optimization schemes combined with design experience to change the mass and isotropic stiffness, but the optimal frequency avoidance method cannot be found.

[0005] In a first aspect, the present application provides a modal frequency avoidance method based on a mass discretization model, the method comprising the following steps:

[0006] The modifiable region of the structural component is divided into blocks based on the mass discretization model to obtain multiple modifiable blocks;

[0007] According to setting the thickness of each of the modifiable blocks, the modal frequency values ​​of each order of each of the modifiable blocks are obtained;

[0008] According to the modal frequency values ​​of each order of the modifiable blocks, the optimal thickness of the modifiable blocks is determined to avoid the frequency.

[0009] Preferably, the step of setting the thickness of each of the modifiable blocks to obtain the modal frequency values ​​of each of the modifiable blocks comprises:

[0010] Setting the thickness of each of the modifiable blocks, and selecting a quantitative thickness of each of the modifiable blocks;

[0011] Based on DOE analysis, the quantitative thickness of each modifiable block is determined, and the modal frequencies of each modifiable block are obtained.

[0012] Preferably, the multiple methods of determining the optimal thickness of the modifiable block and performing frequency avoidance according to the modal frequency values ​​of each order of the modifiable block include:

[0013] Determining target modal frequency values ​​of each order of the modifiable block based on the modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance interval;

[0014] According to the target modal frequency values ​​of each order, the optimal thickness of the modifiable block is determined and frequency avoidance is performed.

[0015] Preferably, determining the target modal frequency values ​​of each order of the modifiable block based on the modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance interval includes:

[0016] Respectively comparing the modal frequency values ​​of each modifiable block with the preset modal frequency avoidance interval to determine whether the modal frequency values ​​of each modifiable block are within the preset modal frequency avoidance interval;

[0017] The modal frequency values ​​of each order of the modifiable block that are not in the preset modal frequency avoidance interval are used as the target modal frequency values ​​of each order of the modifiable block.

[0018] Preferably, the determining the optimal thickness of the modifiable block for frequency avoidance according to the target modal frequency values ​​of each order comprises:

[0019] Determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition;

[0020] If it is determined that the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, then the target modal frequency values ​​of each order of the structural component that meet the condition are determined to be the optimal modal frequency values;

[0021] An optimal thickness of the modifiable block corresponding to the optimal modal frequency value is determined to perform frequency avoidance.

[0022] Preferably, after determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, the method further comprises:

[0023] If it is determined that the target modal frequency values ​​of each order of the modifiable block do not meet the optimal condition, then reselecting the thickness of the modifiable block to obtain the optimal modal frequency value;

[0024] An optimal thickness of the modifiable block corresponding to the optimal modal frequency value is determined to perform frequency avoidance.

[0025] Preferably, after determining whether the modal frequency values ​​of each modifiable block are within the preset modal frequency avoidance interval, the method further includes:

[0026] If it is determined that the modal frequency values ​​of each modifiable block are all within the preset modal frequency avoidance interval, the thickness of the modifiable block is reselected to obtain the modal frequency values ​​of each modifiable block.

[0027] Preferably, the optimal conditions include minimum weight and / or maximum load-bearing capacity.

[0028] In a second aspect, the present application also provides a computer device, comprising a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the modal frequency avoidance method based on the mass discretization model as described above are implemented.

[0029] In a third aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the modal frequency avoidance method based on the mass discretization model as described above are implemented.

[0030] The present application provides a modal frequency avoidance method, a computer device and a computer-readable storage medium based on a mass discretization model. The modifiable area of ​​a structural member is divided into blocks based on a mass discretization model to obtain a plurality of modifiable blocks; the thickness of each modifiable block is set to obtain the modal frequency values ​​of each modifiable block; and the optimal thickness of the modifiable block is determined for frequency avoidance based on the modal frequency values ​​of the plurality of modifiable blocks, thereby achieving frequency avoidance through designing the optimal thickness of the modifiable block. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A flow chart of a modal frequency avoidance method based on a mass discretization model provided in an embodiment of the present application;

[0033] Figure 2 for Figure 1 Schematic diagram of the sub-step flow of the modal frequency avoidance method based on the mass discretization model in FIG.

[0034] Figure 3 The present invention is a block diagram showing the structure of a computer device according to an embodiment of the present application.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0038] The embodiment of the present application provides a modal frequency avoidance method based on a mass discretization model, a computer device, and a computer-readable storage medium. The modal frequency avoidance method based on a mass discretization model can be applied to a computer device, which can be an electronic device such as a laptop computer or a desktop computer.

[0039] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Please refer to Figure 1 , Figure 1 A flow chart of a modal frequency avoidance method based on a mass discretization model provided in an embodiment of the present application.

[0041] like Figure 1 As shown, the method includes steps S101 to S103.

[0042] Step S101 : dividing the modifiable region of a structural component into blocks based on a mass discretization model to obtain a plurality of modifiable blocks.

[0043] Exemplarily, the modifiable and non-modifiable areas of the structural member are identified. For example, avoidance areas such as the mounting points of the structural member and other areas are identified, and the avoidance areas are treated as non-modifiable areas, and other areas are treated as modifiable areas. For example, when the structural member is a suspension swing arm, the three mounting points with the bracket and the ball pin and the avoidance holes are treated as non-modifiable areas, and other areas are treated as modifiable areas. The modifiable area of ​​the structural member is divided into blocks through the mass discretization model. For example, the modifiable area is divided into six blocks of 50 mm by equally dividing the mass discretization model based on the size of the structural member and the finite element mesh size.

[0044] Step S102: setting the thickness of each of the modifiable blocks to obtain the modal frequency values ​​of each of the modifiable blocks.

[0045] Exemplarily, the thickness of the modifiable block is set, and the thickness of the modifiable block is used as a variable. For example, the thickness of the six modifiable blocks is set to 3.5 mm, or the thickness of the modifiable blocks is set in the range of 3.3 mm-3.7 mm, wherein multiple thicknesses are set for each modifiable block. By setting the thickness of each modifiable block, the modal frequency values ​​of each modifiable block are obtained.

[0046] In one embodiment, specifically, referring to Figure 2 , step S102 includes: sub-step S1021 to sub-step S1022.

[0047] Sub-step S1021, setting the thickness of each of the modifiable blocks, and selecting a quantitative thickness of each of the modifiable blocks.

[0048] Exemplarily, the thickness of the modifiable block is set, and the thickness of the modifiable block is used as a variable. For example, the thickness of 6 modifiable blocks is set to 3.5mm, or the thickness of the modifiable block is set in the range of 3.3mm-3.7mm, wherein a plurality of thicknesses are set for each modifiable block. By setting the thickness of each modifiable block, the thickness of a certain number of modifiable blocks is obtained. For example, a preset sampling method is used to select the thickness of a preset number of modifiable blocks from the thickness of the set modifiable blocks, such as using the Hammersley sampling method to sample in the interval of 3.3mm-3.7mm of each block thickness, and the number of samples is 50.

[0049] Sub-step S1022: based on the thickness of the modifiable blocks selected by DOE analysis, obtaining the modal frequencies of each modifiable block.

[0050] Exemplarily, the thickness of the modifiable block selected by DOE analysis, for example, the thickness of 50 modifiable blocks in the thickness range of 3.3mm-3.7mm is selected by DOE analysis. The modal frequencies of each modifiable block are obtained by analyzing the thickness of the modifiable block selected by DOE, for example, by driving the DOE analysis by a model, so that the thickness of the modifiable block selected by DOE analysis is analyzed, thereby obtaining the modal frequencies of each modifiable block. Alternatively, the thickness of each modifiable block is used as the input of the DOE analysis, so that the DOE analysis responds to the thickness of each modifiable block, thereby obtaining the first-order modal frequency value and the second-order modal frequency value corresponding to the thickness of each modifiable block output by the DOE analysis.

[0051] Step S103: determining the optimal thickness of the modifiable block for frequency avoidance according to the modal frequency values ​​of each order of the modifiable blocks.

[0052] Exemplarily, when the modal frequency values ​​of each order of multiple modifiable blocks are obtained, the modal frequency values ​​of each modifiable block are compared with the preset modal frequency values, and the modal frequency values ​​that meet the preset modal frequency values ​​are used as the target modal frequency values. The thickness of the modifiable block corresponding to the target modal frequency value is determined, and the thickness of the modifiable block corresponding to the determined target modal frequency value is used as the optimal thickness of the modifiable block. For example, the preset modal frequency value is 10HZ, and the first-order modal frequency value and the second-order modal frequency value of each modifiable block are compared with the preset modal frequency value of 10HZ, and the first-order modal frequency value and the second-order modal frequency value of each modifiable block are determined to be greater than the target modal frequency value of the preset modal frequency value of 10HZ. After the optimal thickness of each modifiable block is obtained, the modifiable block is designed based on the optimal thickness to avoid frequency.

[0053] Specifically, the multiple methods of determining the optimal thickness of the modifiable block and performing frequency avoidance according to the modal frequency values ​​of each order of the modifiable block include: determining the target modal frequency values ​​of each order of the modifiable block based on the multiple modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance intervals; and determining the optimal thickness of the modifiable block for frequency avoidance according to the target modal frequency values ​​of each order.

[0054] Exemplarily, after obtaining the modal frequency values ​​of each modifiable block and the preset modal frequency avoidance interval, the modal frequency values ​​of each modifiable block are compared with the preset modal frequency avoidance interval to determine whether the modal frequency values ​​of each modifiable block are in the preset modal frequency avoidance interval, and the modal frequency values ​​of each modifiable block that are not in the preset modal frequency avoidance interval are determined, and the modal frequency values ​​of each modifiable block that are not in the preset modal frequency avoidance interval are used as the target modal frequency values ​​of each order. The thickness of the corresponding modifiable block is determined by the target modal frequency values ​​of each order, and the thickness of the modifiable block corresponding to the target modal frequency value is used as the optimal thickness of the modifiable block. The modifiable block is designed by the optimal thickness to achieve frequency avoidance.

[0055] Specifically, the method of determining target modal frequency values ​​of each order of the modifiable block based on the modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance interval includes: comparing the modal frequency values ​​of each order of the modifiable block with the preset modal frequency avoidance interval respectively to determine whether the modal frequency values ​​of each order of the modifiable block are in the preset modal frequency avoidance interval; and using the modal frequency values ​​of each order of the modifiable block that are not in the preset modal frequency avoidance interval as the target modal frequency values ​​of each order of the modifiable block.

[0056] Exemplarily, each order modal frequency value of each modifiable block is compared with a preset modal frequency avoidance interval to determine whether each order modal frequency value of each modifiable block is within the preset modal frequency avoidance interval, and each order modal frequency value of each order modal frequency value of each modifiable block that is not within the preset modal frequency avoidance interval is determined, and each order modal frequency value that is not within the preset modal frequency avoidance interval is used as each order target modal frequency value. For example, the preset modal frequency avoidance interval is [110-130], and the modal frequency values ​​of each order of each modifiable block are compared with the preset modal frequency avoidance interval [110-130]. ​​For example, if the modal frequency value of each order of modal frequency values ​​of each modifiable block is 100, it is not in the preset modal frequency avoidance interval [110-130]; if the modal frequency value of each order of modal frequency values ​​of each modifiable block is 110, it is in the preset modal frequency avoidance interval [110-130]; if the modal frequency value of each order of modal frequency values ​​of each modifiable block is 130, it is in the preset modal frequency avoidance interval [110-130]; if the modal frequency value of each order of modal frequency values ​​of each modifiable block is 132, it is not in the preset modal frequency avoidance interval [110-130]. The modal frequency values ​​100 and 132 of each order that are not in the preset modal avoidance interval [110-130] are used as the target modal frequency values ​​of each order.

[0057] Specifically, according to the target modal frequency values ​​of each order, determining the optimal thickness of the modifiable block for frequency avoidance includes: determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition; if it is determined that the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, determining the target modal frequency values ​​of each order of the structural component that meet the optimal condition as the optimal modal frequency value; and determining the optimal thickness of the modifiable block corresponding to the optimal modal frequency value for frequency avoidance.

[0058] Exemplarily, it is determined whether the obtained target modal frequency values ​​of each order meet the optimal condition. If it is determined that the target modal frequency values ​​of each order meet the optimal condition, the thickness of the modifiable block corresponding to the target modal frequency values ​​of each order that meet the optimal condition is determined to be the optimal thickness. For example, the optimal condition is the minimum mass and / or the strongest bearing capacity. When the target modal frequency values ​​of each order are obtained, the thickness of the modifiable block corresponding to the target modal frequency values ​​of each order is determined, and the thickness of the modifiable block corresponding to the target modal frequency values ​​of each order is compared to determine the target modal frequency values ​​of each order of the modifiable block with the minimum mass and / or the strongest bearing capacity. For example, when the number of the target modal frequency values ​​of each order of the modifiable block is one, the optimal condition is not met. When the target modal frequency values ​​of each order of the modifiable block are obtained as multiple, the multiple target modal frequency values ​​of each order are compared to determine the optimal modal frequency value of the optimal condition. For example, the smallest target modal frequency value of each order in the comparison result is determined as the one that meets the minimum mass, and the smallest target modal frequency value of each order in the comparison result is determined as the one that meets the strongest bearing capacity. The thickness of the modifiable block is corresponding to the optimal modal frequency value, and the 3D design is designed through the thickness of the modifiable block to avoid frequency.

[0059] Specifically, after determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal conditions, it includes: if it is determined that the target modal frequency values ​​of each order of the modifiable block do not meet the optimal conditions, reselecting the thickness of the modifiable block to obtain the optimal modal frequency value; determining the optimal thickness of the modifiable block corresponding to the optimal modal frequency value for frequency avoidance.

[0060] Exemplarily, if it is determined that the target modal frequency values ​​of each order of the modifiable block do not meet the optimal condition, the thickness of the modifiable block is reselected. For example, when the number of the target modal frequency values ​​of each order of the modifiable block is one, the optimal condition is not met, and the thickness of the modifiable block of the preset sampling number is reselected from the thickness of the modifiable block after setting based on the preset sampling method, such as using the Hammersley sampling method to sample in the interval of 3.3mm-3.7mm of each block thickness, and the number of samples is 100. The thickness of the modifiable block selected by DOE analysis, for example, the thickness of 100 modifiable blocks in the interval of 3.3mm-3.7mm is selected by DOE analysis. The thickness of the modifiable block selected by DOE analysis is used to obtain the modal frequencies of each modifiable block, for example, by driving the DOE analysis by a model, so that the thickness of the modifiable block selected by DOE analysis is selected, thereby obtaining the modal frequencies of each modifiable block. Alternatively, the thickness of each modifiable block is used as an input of the DOE analysis so that the DOE analysis responds to the thickness of each modifiable block, thereby obtaining the first-order modal frequency value and the second-order modal frequency value corresponding to the thickness of each modifiable block output by the DOE analysis.

[0061] When the modal frequency values ​​of each order of multiple modifiable blocks are obtained, the modal frequency values ​​of each order of each modifiable block are compared with the preset modal frequency value, and the modal frequency value that meets the preset modal frequency value is used as the target modal frequency value, and the thickness of the modifiable block corresponding to the target modal frequency value is determined, and the thickness of the modifiable block corresponding to the determined target modal frequency value is used as the optimal thickness of the modifiable block. For example, the preset modal frequency value is 10HZ, and the first-order modal frequency value and the second-order modal frequency value of each modifiable block are compared with the preset modal frequency value 10HZ, and the first-order modal frequency value and the second-order modal frequency value of each modifiable block are determined to be greater than the target modal frequency value of the preset modal frequency value 10HZ. After the optimal thickness of each modifiable block is obtained, the modifiable block is designed based on the optimal thickness to avoid frequency.

[0062] Specifically, after determining whether the modal frequency values ​​of each order of the modifiable blocks are in the preset modal frequency avoidance interval, it also includes: if it is determined that the modal frequency values ​​of each order of the modifiable blocks are all in the preset modal frequency avoidance interval, reselecting the thickness of the modifiable block to obtain the modal frequency values ​​of each order of the modifiable blocks.

[0063] Exemplarily, the preset modal frequency avoidance interval is [110-130]. ​​The modal frequency values ​​of each modifiable block are compared with the preset modal frequency avoidance interval [110-130]. ​​If the modal frequency value of each modal frequency value of each modifiable block is 110, it is in the preset modal frequency avoidance interval [110-130]. ​​If the modal frequency value of each modal frequency value of each modifiable block is 130, it is in the preset modal frequency avoidance interval [110-130]. ​​The thickness of the modifiable block with a preset sampling number is re-selected from the thickness of the set modifiable block based on the preset sampling method, such as using the Hammersley sampling method to sample in the interval of 3.3mm-3.7mm of each block thickness, and the sampling number is 100.

[0064] The thickness of the modifiable blocks selected by DOE analysis, for example, the thickness of 100 modifiable blocks in the thickness range of 3.3mm-3.7mm are selected by DOE analysis. The modal frequencies of each modifiable block are obtained by analyzing the thickness of the modifiable blocks selected by DOE, for example, by driving DOE analysis through a model, so that the thickness of the modifiable blocks selected by DOE analysis is selected, thereby obtaining the modal frequencies of each modifiable block. Alternatively, the thickness of each modifiable block is used as the input of DOE analysis, so that DOE analysis responds to the thickness of each modifiable block, thereby obtaining the first-order modal frequency value and the second-order modal frequency value corresponding to the thickness of each modifiable block output by DOE analysis.

[0065] When the modal frequency values ​​of each order of multiple modifiable blocks are obtained, the modal frequency values ​​of each order of each modifiable block are compared with the preset modal frequency value, and the modal frequency value that meets the preset modal frequency value is used as the target modal frequency value, and the thickness of the modifiable block corresponding to the target modal frequency value is determined, and the thickness of the modifiable block corresponding to the determined target modal frequency value is used as the optimal thickness of the modifiable block. For example, the preset modal frequency value is 10HZ, and the first-order modal frequency value and the second-order modal frequency value of each modifiable block are compared with the preset modal frequency value 10HZ, and the first-order modal frequency value and the second-order modal frequency value of each modifiable block are determined to be greater than the target modal frequency value of the preset modal frequency value 10HZ. After the optimal thickness of each modifiable block is obtained, the modifiable block is designed based on the optimal thickness to avoid frequency.

[0066] In an embodiment of the present application, the modifiable area of ​​the structural part is divided into blocks based on the mass discretization model to obtain a plurality of modifiable blocks; the thickness of each of the modifiable blocks is set to obtain the modal frequency values ​​of each modifiable block; based on the modal frequency values ​​of the plurality of modifiable blocks, the optimal thickness of the modifiable block is determined and frequency avoidance is performed, thereby achieving frequency avoidance by designing with the optimal thickness of the modifiable block.

[0067] See also Figure 3 , Figure 3 A schematic block diagram of the structure of a computer device provided in an embodiment of the present application. The computer device may be a terminal.

[0068] like Figure 3 As shown, the computer device includes a processor, a memory, and a network interface connected via a system bus, wherein the memory may include a non-volatile storage medium and an internal memory.

[0069] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions, and when the program instructions are executed, the processor can execute any modal frequency avoidance method based on a mass discretization model.

[0070] The processor is used to provide computing and control capabilities and support the operation of the entire computer equipment.

[0071] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the processor can execute any modal frequency avoidance method based on the mass discretization model.

[0072] The network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art will appreciate that Figure 3The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0073] It should be understood that the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0074] In one embodiment, the processor is used to run a computer program stored in the memory to implement the following steps:

[0075] The modifiable region of the structural component is divided into blocks based on the mass discretization model to obtain multiple modifiable blocks;

[0076] According to setting the thickness of each of the modifiable blocks, the modal frequency values ​​of each order of each of the modifiable blocks are obtained;

[0077] According to the modal frequency values ​​of each order of the modifiable blocks, the optimal thickness of the modifiable blocks is determined and frequency avoidance is performed.

[0078] In one embodiment, when the processor is implemented to obtain the modal frequency values ​​of each modifiable block according to setting the thickness of each modifiable block, it is used to implement:

[0079] Setting the thickness of each of the modifiable blocks, and selecting a quantitative thickness of each of the modifiable blocks;

[0080] Based on the thickness of the modifiable blocks selected by DOE analysis, the modal frequencies of each modifiable block are obtained.

[0081] In one embodiment, the processor implements multiple operations for determining the optimal thickness of the modifiable block and performing frequency avoidance according to the modal frequency values ​​of each order of the modifiable block, and is used to implement:

[0082] Determining target modal frequency values ​​of each order of the modifiable block based on the modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance interval;

[0083] According to the target modal frequency values ​​of each order, the optimal thickness of the modifiable block is determined to perform frequency avoidance.

[0084] In one embodiment, when the processor determines the target modal frequency values ​​of each order of the modifiable block based on the modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance interval, it is used to implement:

[0085] Respectively comparing the modal frequency values ​​of each modifiable block with the preset modal frequency avoidance interval to determine whether the modal frequency values ​​of each modifiable block are within the preset modal frequency avoidance interval;

[0086] The modal frequency values ​​of each order of the modifiable block that are not in the preset modal frequency avoidance interval are used as the target modal frequency values ​​of each order of the modifiable block.

[0087] In one embodiment, when the processor determines the optimal thickness of the modifiable block for frequency avoidance according to the target modal frequency values ​​of each order, it is used to implement:

[0088] Determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition;

[0089] If it is determined that the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, then the target modal frequency values ​​of each order of the structural component that meet the condition are determined to be the optimal modal frequency values;

[0090] An optimal thickness of the modifiable block corresponding to the optimal modal frequency value is determined to perform frequency avoidance.

[0091] In one embodiment, after the processor implements determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, it is used to implement:

[0092] If it is determined that the target modal frequency values ​​of each order of the modifiable block do not meet the optimal condition, then reselecting the thickness of the modifiable block to obtain the optimal modal frequency value;

[0093] An optimal thickness of the modifiable block corresponding to the optimal modal frequency value is determined to perform frequency avoidance.

[0094] In one embodiment, when the processor determines whether each modal frequency value of each modifiable block is after the preset modal frequency avoidance interval, it is used to implement:

[0095] If it is determined that the modal frequency values ​​of each modifiable block are all within the preset modal frequency avoidance interval, the thickness of the modifiable block is reselected to obtain the modal frequency values ​​of each modifiable block.

[0096] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. The computer program includes program instructions. The method implemented when the program instructions are executed can refer to the various embodiments of the modal frequency avoidance method based on the mass discretization model of the present application.

[0097] The computer-readable storage medium may be an internal storage unit of the computer device described in the foregoing embodiment, such as a hard disk or memory of the computer device. The computer-readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc., equipped on the computer device.

[0098] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0099] The serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments. The above description is only a specific implementation mode of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A modal frequency avoidance method based on a mass discretization model, characterized in that: include: The modifiable region of the structural component is divided into blocks based on the mass discretization model to obtain multiple modifiable blocks; According to setting the thickness of each of the modifiable blocks, the modal frequency values ​​of each order of each of the modifiable blocks are obtained; Determining the optimal thickness of the modifiable block for frequency avoidance according to the modal frequency values ​​of each order of the modifiable blocks; The determining the optimal thickness of the modifiable block and performing frequency avoidance according to each order modal frequency value of the plurality of modifiable blocks comprises: Determining target modal frequency values ​​of each order of the modifiable block based on the modal frequency values ​​of each order of the modifiable block and the preset modal frequency avoidance interval; According to the target modal frequency values ​​of each order, determining the optimal thickness of the modifiable block and performing frequency avoidance; The step of determining the optimal thickness of the modifiable block for frequency avoidance according to the target modal frequency values ​​of each order includes: Determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition; If it is determined that the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, then the target modal frequency values ​​of each order of the structural component that meet the condition are determined to be the optimal modal frequency values; An optimal thickness of the modifiable block corresponding to the optimal modal frequency value is determined to perform frequency avoidance.

2. The modal frequency avoidance method based on mass discretization model according to claim 1, characterized in that: The step of setting the thickness of each modifiable block to obtain the modal frequency values ​​of each modifiable block includes: Setting the thickness of each of the modifiable blocks, and selecting a quantitative thickness of each of the modifiable blocks; Based on the thickness of the modifiable blocks selected by DOE analysis, the modal frequencies of each modifiable block are obtained.

3. The modal frequency avoidance method based on mass discretization model according to claim 1, characterized in that: The determining of each order target modal frequency value of the modifiable block based on each order modal frequency value of the multiple modifiable blocks and the preset modal frequency avoidance interval comprises: Respectively comparing the modal frequency values ​​of each modifiable block with the preset modal frequency avoidance interval to determine whether the modal frequency values ​​of each modifiable block are within the preset modal frequency avoidance interval; The modal frequency values ​​of each order of the modifiable block that are not in the preset modal frequency avoidance interval are used as the target modal frequency values ​​of each order of the modifiable block.

4. The modal frequency avoidance method based on mass discretization model according to claim 1, characterized in that: After determining whether the target modal frequency values ​​of each order of the modifiable block meet the optimal condition, the method further comprises: If it is determined that the target modal frequency values ​​of each order of the modifiable block do not meet the optimal condition, then reselecting the thickness of the modifiable block to obtain the optimal modal frequency value; An optimal thickness of the modifiable block corresponding to the optimal modal frequency value is determined to perform frequency avoidance.

5. The modal frequency avoidance method based on mass discretization model according to claim 3, characterized in that: After determining whether the modal frequency values ​​of each modifiable block are within the preset modal frequency avoidance interval, the method further includes: If it is determined that the modal frequency values ​​of each modifiable block are all within the preset modal frequency avoidance interval, the thickness of the modifiable block is reselected to obtain the modal frequency values ​​of each modifiable block.

6. The modal frequency avoidance method based on mass discretization model according to claim 1, characterized in that: The optimal conditions include minimum weight and / or maximum load-bearing capacity.

7. A computer device, characterized in that: The computer device includes a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the modal frequency avoidance method based on the mass discretization model as described in any one of claims 1 to 6 are implemented.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the modal frequency avoidance method based on a mass discretization model as claimed in any one of claims 1 to 6 are implemented.

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