Vibration reduction analysis method and device of hydraulic bushing, storage medium and computer equipment

Abstract

The embodiment of the invention provides a vibration reduction analysis method and device of a hydraulic bushing, a storage medium and computer equipment. The method comprises the steps that mathematical modeling is conducted on the hydraulic bushing, and a mathematical model is generated; acquiring modeling data of the mathematical model; the modeling data are calculated according to the mathematical model, characteristic values of the hydraulic bushing are generated, and the characteristic values comprise storage rigidity and loss rigidity; and carrying out vibration reduction analysis on the hydraulic bushing according to the storage rigidity and the loss rigidity. In the technical scheme provided by the embodiment of the invention, the damping analysis is performed on the hydraulic bushing through mathematical modeling, so that the accuracy of the damping analysis of the hydraulic bushing is improved, and the damping effect is relatively good.

Description

Technical Field

[0001] The invention relates to the technical field of automobile bushings, and in particular to a vibration reduction analysis method, a device, a storage medium and a computer device for hydraulic bushings. Background Art

[0002] The main functions of automobile bushings are shock absorption, noise reduction and component protection. They protect the comfort of passengers in the car by absorbing and reducing vibrations, while extending the service life of components. In the related art, automobile bushings are made of high elastic rubber, composite materials, etc. to achieve vibration reduction effects. General rubber bushings can reduce lateral stiffness by reducing the stiffness of the main rubber, but will have a bad effect on suspension design factors (SDF) such as wheelbase difference (toe) and wheel camber (camber), making the vibration reduction effect of automobile bushings poor. Summary of the invention

[0003] In view of this, embodiments of the present invention provide a vibration reduction analysis method, apparatus, storage medium and computer equipment for a hydraulic bushing, so as to improve the accuracy of the vibration reduction analysis of the hydraulic bushing and the vibration reduction effect.

[0004] On the one hand, an embodiment of the present invention provides a vibration reduction analysis method for a hydraulic bushing, comprising:

[0005] Mathematically model the hydraulic bushing and generate a mathematical model;

[0006] Acquiring modeling data of the mathematical model;

[0007] Calculating the modeling data according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, wherein the characteristic values ​​include storage stiffness and loss stiffness;

[0008] A vibration reduction analysis is performed on the hydraulic bushing according to the storage stiffness and the loss stiffness.

[0009] Optionally, the modeling data includes: main rubber stiffness, attenuation coefficient, first liquid chamber volumetric stiffness, second liquid chamber volumetric stiffness, first liquid chamber pressure, second liquid chamber pressure, first liquid chamber cross-sectional area, second liquid chamber cross-sectional area, inertial passage cross-sectional area, inertial passage fluid mass, inertial passage fluid attenuation force, inertial passage tension, outer cylinder displacement, inertial passage fluid displacement, first liquid chamber fluid inlet and outlet displacement and second liquid chamber fluid inlet and outlet displacement.

[0010] Optionally, calculating the modeling data according to the mathematical model to generate a characteristic value of the hydraulic bushing includes:

[0011] When the outer sleeve of the hydraulic bushing is displaced, a first pressure difference between the first liquid chamber and a second pressure difference between the second liquid chamber are calculated according to the mathematical model;

[0012] Generate the total pressure equation based on the obtained spring force, damper force and pressure;

[0013] Establishing a fluid motion equation in the intertidal zone according to the cross-sectional area of ​​the inertial passage, the first pressure difference of the first liquid chamber, and the second pressure difference of the second liquid chamber;

[0014] If the motions of the displacement of the outer cylinder and the displacement of the fluid in the inertial passage are coordinated, then the motion equations of the displacement of the outer cylinder, the displacement of the fluid in the inertial passage and the total pressure displacement are established;

[0015] The motion equations of the outer cylinder displacement, the fluid displacement in the inertial passage, and the total pressure displacement are substituted into the total pressure equation and the motion equation of the fluid in the intertidal zone to generate characteristic values ​​of the hydraulic bushing.

[0016] Optionally, calculating the first pressure difference of the first liquid chamber and the second pressure difference of the second liquid chamber according to the mathematical model includes:

[0017] generating a total volume change value of the first liquid chamber according to the displacement and the cross-sectional area of ​​the first liquid chamber;

[0018] generating an amount of liquid discharged from the second liquid chamber according to a cross-sectional area of ​​the inertia passage and a displacement of the fluid in the inertia passage;

[0019] generating a first pressure difference of the first liquid chamber according to the volume stiffness of the first liquid chamber, the total volume change value of the first liquid chamber, and the amount of liquid discharged from the second liquid chamber;

[0020] A second pressure difference of the second liquid chamber is generated according to the volumetric rigidity of the second liquid chamber, the displacement, the cross-sectional area of ​​the second liquid chamber, the cross-sectional area of ​​the inertia passage, and the displacement of the fluid in the inertia passage.

[0021] Optionally, before generating the total pressure equation according to the acquired spring force, damper force and pressure, the method includes:

[0022] generating the spring force according to the primary rubber stiffness and the displacement;

[0023] generating the damper force based on the damping coefficient and the displacement;

[0024] The pressure is generated based on the first liquid chamber cross-sectional area, the first pressure difference of the first liquid chamber, the second liquid chamber cross-sectional area, and the second pressure difference of the second liquid chamber.

[0025] Optionally, the characteristic values ​​also include dynamic stiffness, loss coefficient and loss angle.

[0026] Optionally, performing vibration reduction analysis on the hydraulic bushing according to the storage stiffness and the loss stiffness includes:

[0027] When the loss stiffness increases, the vibration reduction force increases and the resonance displacement decreases;

[0028] When the storage stiffness is reduced, the transmission force is reduced and the vibration insulation is improved;

[0029] Shift the resonant frequency toward the area where the hydraulic bushing is not used.

[0030] On the other hand, an embodiment of the present invention provides a vibration reduction analysis device for a hydraulic bushing, comprising:

[0031] A modeling module is used for mathematical modeling of the hydraulic bushing and generating a mathematical model;

[0032] An acquisition module, used for acquiring modeling data of the mathematical model;

[0033] A calculation module, used for calculating the modeling data according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, wherein the characteristic values ​​include storage stiffness and loss stiffness;

[0034] An analysis module is used to perform vibration reduction analysis on the hydraulic bushing according to the storage stiffness and the loss stiffness.

[0035] On the other hand, an embodiment of the present invention provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the above-mentioned vibration reduction analysis method of the hydraulic bushing.

[0036] On the other hand, an embodiment of the present invention provides a computer device, including a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, wherein the program instructions, when loaded and executed by the processor, implement the steps of the above-mentioned vibration reduction analysis method of the hydraulic bushing.

[0037] In the technical solution provided by the embodiment of the present invention, mathematical modeling is performed on the hydraulic bushing to generate a mathematical model; modeling data of the mathematical model is obtained; the modeling data is calculated according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, and the characteristic values ​​include storage stiffness and loss stiffness; vibration reduction analysis is performed on the hydraulic bushing according to the storage stiffness and loss stiffness. In the technical solution provided by the embodiment of the present invention, vibration reduction analysis is performed on the hydraulic bushing through mathematical modeling, which improves the accuracy of vibration reduction analysis of the hydraulic bushing and has a good vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A flow chart of a vibration reduction analysis method for a hydraulic bushing provided in one embodiment of the present invention;

[0040] Figure 2 A schematic diagram of a mathematical model provided for an embodiment of the present invention;

[0041] Figure 3 A flow chart for calculating modeling data according to a mathematical model to generate characteristic values ​​of a hydraulic bushing provided in one embodiment of the present invention;

[0042] Figure 4 A schematic structural diagram of a vibration reduction analysis device for a hydraulic bushing provided in one embodiment of the present invention;

[0043] Figure 5 A schematic diagram of a computer device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0047] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] An embodiment of the present invention provides a vibration reduction analysis method for a hydraulic bushing. Figure 1A flow chart of a vibration reduction analysis method for a hydraulic bushing provided in one embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0049] Step 102: mathematically model the hydraulic bushing to generate a mathematical model.

[0050] Figure 2 A schematic diagram of a mathematical model provided by an embodiment of the present invention, such as Figure 2 As shown, the mathematical model includes a double load bearing chamber (Double Load Bearing Chamber, referred to as DLBC), wherein the mathematical model includes an outer sleeve, a first liquid chamber, an inner sleeve, an inertia passage and a second liquid chamber. The outer sleeve is connected to the first liquid chamber and the second liquid chamber respectively, the first liquid chamber and the second liquid chamber are connected through an inertia passage, and the inner sleeve is arranged in the middle of the outer sleeve.

[0051] Step 104: Obtain modeling data of the mathematical model.

[0052] In the embodiment of the present invention, the modeling data includes: main rubber stiffness Kr, damping coefficient Cr, first liquid chamber volumetric stiffness K1, second liquid chamber volumetric stiffness K2, first liquid chamber pressure P1, second liquid chamber pressure P2, first liquid chamber cross-sectional area S1, second liquid chamber cross-sectional area S2, inertia track cross-sectional area SI, inertia track fluid mass mI, inertia track fluid damping force CI, inertia track length L, outer sleeve displacement x(t), inertia track fluid displacement yI(t), first liquid chamber fluid inlet and outlet displacement y1(t) and second liquid chamber fluid inlet and outlet displacement y2(t).

[0053] Step 106: Calculate the modeling data according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, where the characteristic values ​​include storage stiffness and loss stiffness.

[0054] Figure 3 A flowchart of calculating modeling data according to a mathematical model to generate characteristic values ​​of a hydraulic bushing is provided in an embodiment of the present invention, such as Figure 3 As shown, step 106 includes:

[0055] Step 1062: Generate a total volume change value of the first liquid chamber according to the displacement and the cross-sectional area of ​​the first liquid chamber.

[0056] In the embodiment of the present invention, when the outer sleeve of the hydraulic bushing is displaced, a total volume change value of the first liquid chamber is generated according to the displacement and the cross-sectional area of ​​the first liquid chamber.

[0057] Specifically, the displacement and the cross-sectional area of ​​the first liquid chamber are calculated by the formula ΔVc1=+S1x to generate the total volume change value of the first liquid chamber, wherein ΔVc1 is the total volume change value of the first liquid chamber, S1 is the cross-sectional area of ​​the first liquid chamber, and x is the displacement.

[0058] Step 1064: Generate the amount of liquid discharged from the second liquid chamber according to the cross-sectional area of ​​the inertial passage and the displacement of the fluid in the inertial passage.

[0059] Specifically, the amount of liquid discharged from the second liquid chamber is generated by the cross-sectional area of ​​the inertial passage and the displacement of the fluid in the inertial passage through the formula ΔVI=+SIyI, wherein ΔVI is the amount of liquid discharged from the second liquid chamber, SI is the cross-sectional area of ​​the inertial passage, and yI is the displacement of the fluid in the inertial passage.

[0060] Step 1066: Generate a first pressure difference of the first liquid chamber according to the volume stiffness of the first liquid chamber, the total volume change value of the first liquid chamber, and the amount of liquid discharged from the second liquid chamber.

[0061] Specifically, the volumetric stiffness of the first liquid chamber, the total volume change value of the first liquid chamber and the amount of liquid discharged from the second liquid chamber are calculated by the formula ΔP1=K1(ΔVc1-ΔVI)=K1(S1x-SI yI) to generate the first pressure difference of the first liquid chamber, wherein ΔP1 is the first pressure difference of the first liquid chamber, K1 is the volumetric stiffness of the first liquid chamber, ΔVI is the amount of liquid discharged from the second liquid chamber, and ΔVc1 is the total volume change value of the first liquid chamber.

[0062] Step 1068: Generate a second pressure difference of the second liquid chamber according to the volume stiffness of the second liquid chamber, the displacement, the cross-sectional area of ​​the second liquid chamber, the cross-sectional area of ​​the inertial passage, and the displacement of the fluid in the inertial passage.

[0063] Specifically, the second liquid chamber volumetric stiffness, displacement, second liquid chamber cross-sectional area, inertial passage cross-sectional area and fluid displacement in the inertial passage are calculated through the formula ΔP2=K2(-S2x+SI yI) to generate the second pressure difference of the second liquid chamber, wherein ΔP2 is the second pressure difference of the second liquid chamber, K2 is the volumetric stiffness of the second liquid chamber, S2 is the cross-sectional area of ​​the second liquid chamber, x is the displacement, SI is the cross-sectional area of ​​the inertial passage, and yI is the fluid displacement in the inertial passage.

[0064] Step 1070: Generate spring force according to the main rubber stiffness and displacement.

[0065] Specifically, the spring force is generated by calculating the main rubber stiffness and displacement through the formula fs=Krx, where Kr is the main rubber stiffness, x is the displacement, and fs is the spring force.

[0066] Step 1072: Generate a damper force according to the damping coefficient and the displacement.

[0067] Specifically, the damping coefficient and the displacement are calculated to generate the damper force by the formula fd=Crx, wherein Cr is the damping coefficient, x is the displacement, and fd is the damper force.

[0068] Step 1074: Generate pressure according to the cross-sectional area of ​​the first liquid chamber, the first pressure difference of the first liquid chamber, the cross-sectional area of ​​the second liquid chamber, and the second pressure difference of the second liquid chamber.

[0069] Specifically, the cross-sectional area of ​​the first liquid chamber, the first pressure difference of the first liquid chamber, the cross-sectional area of ​​the second liquid chamber and the second pressure difference of the second liquid chamber are calculated to generate pressure through the formula fp=(S1ΔP1-S2ΔP2)=S1K1(S1x-SI yI)-S2K2(-S2x+SI yI), wherein fp is the pressure, S1 is the cross-sectional area of ​​the first liquid chamber, ΔP1 is the first pressure difference of the first liquid chamber, S2 is the cross-sectional area of ​​the second liquid chamber, and ΔP2 is the second pressure difference of the second liquid chamber.

[0070] Step 1076: Generate a total pressure equation based on the obtained spring force, damper force and pressure.

[0071] In the embodiment of the present invention, the total pressure equation is:

[0072] Step 1078: Establish a fluid motion equation in the intertidal zone according to the cross-sectional area of ​​the inertial passage, the first pressure difference of the first liquid chamber, and the second pressure difference of the second liquid chamber.

[0073] In the embodiment of the present invention, the equation of motion of the fluid in the intertidal zone is:

[0074] in,

[0075] mI is the mass of the inertial path fluid, and CI is the attenuation force of the inertial path fluid.

[0076] Step 1080: If the movement of the outer cylinder displacement and the fluid displacement in the inertial passage is coordinated, then establish the motion equations of the outer cylinder displacement, the fluid displacement in the inertial passage and the total pressure displacement.

[0077] In the embodiment of the present invention, the motion equation of the outer cylinder displacement is: The motion equation for the displacement of the fluid in the inertial path is: The equation of motion for the total pressure displacement is Where e is the base of the natural logarithm, j is the imaginary unit, ω is the angular frequency, t is the time variable, ψ is the hysteresis angle, and θ is the loss angle.

[0078]

[0079] Step 1082: Substitute the motion equations of the outer cylinder displacement, the fluid displacement in the inertial passage, and the total pressure displacement into the total pressure equation and the fluid motion equation in the intertidal zone to generate characteristic values ​​of the hydraulic bushing.

[0080] In the embodiment of the present invention, the characteristic values ​​of the hydraulic bushing include storage stiffness and loss stiffness.

[0081] In the embodiment of the present invention, the motion equations of the outer cylinder displacement, the fluid displacement in the inertial passage, and the total pressure displacement are substituted into the total pressure equation and the fluid motion equation in the intertidal zone and mathematically transformed to obtain:

[0082]

[0083] Where K' is the storage stiffness and K" is the loss stiffness.

[0084] In the embodiment of the present invention, the characteristic values ​​further include dynamic stiffness, loss coefficient and loss angle.

[0085] In the embodiment of the present invention, the above formula for calculating K' and K" is further modified to obtain:

[0086]

[0087] Where K' is the storage stiffness, K" is the loss stiffness, tanθ is the loss coefficient, θ is the loss angle, is the dynamic stiffness.

[0088] Step 108: Perform vibration reduction analysis on the hydraulic bushing according to the storage stiffness and the loss stiffness.

[0089] In the embodiment of the present invention, when the loss stiffness increases, the damping force increases and the resonance displacement decreases; when the storage stiffness decreases, the transmission force decreases and the vibration insulation increases; the resonance frequency can also be moved to the area where the hydraulic bushing is not used.

[0090] In the embodiment of the present invention, the vibration reduction analysis results of the hydraulic bushing are shown in Table 1 below.

[0091] Table 1

[0092]

[0093]

[0094]

[0095]

[0096]

[0097] In the embodiment of the present invention, the influence of the vibration amplitude: the difference between storage stiffness and loss stiffness will be generated according to the size of the vibration amplitude X near the resonance frequency (26.15 Hz) → nonlinearity, but the overall trend is consistent.

[0098] In the technical solution provided by the embodiment of the present invention, mathematical modeling is performed on the hydraulic bushing to generate a mathematical model; modeling data of the mathematical model is obtained; the modeling data is calculated according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, and the characteristic values ​​include storage stiffness and loss stiffness; vibration reduction analysis is performed on the hydraulic bushing according to the storage stiffness and loss stiffness. In the technical solution provided by the embodiment of the present invention, vibration reduction analysis is performed on the hydraulic bushing through mathematical modeling, which improves the accuracy of vibration reduction analysis of the hydraulic bushing and has a good vibration reduction effect.

[0099] The embodiment of the present invention provides a vibration reduction analysis device for a hydraulic bushing. Figure 4 A structural schematic diagram of a vibration reduction analysis device for a hydraulic bushing provided in one embodiment of the present invention is shown in FIG. Figure 4 As shown, the device includes: a modeling module 11, an acquisition module 12, a calculation module 13 and an analysis module 14.

[0100] The modeling module 11 is used to perform mathematical modeling on the hydraulic bushing and generate a mathematical model.

[0101] The acquisition module 12 is used to acquire modeling data of the mathematical model.

[0102] The calculation module 13 is used to calculate the modeling data according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, and the characteristic values ​​include storage stiffness and loss stiffness.

[0103] The analysis module 14 is used to perform vibration reduction analysis on the hydraulic bushing according to the storage stiffness and the loss stiffness.

[0104] In an embodiment of the present invention, the modeling data includes: main rubber stiffness, damping coefficient, first liquid chamber volume stiffness, second liquid chamber volume stiffness, first liquid chamber pressure, second liquid chamber pressure, first liquid chamber cross-sectional area, second liquid chamber cross-sectional area, inertial passage cross-sectional area, inertial passage fluid mass, inertial passage fluid damping force, inertial passage tension, outer cylinder displacement, inertial passage fluid displacement, first liquid chamber fluid inlet and outlet displacement and second liquid chamber fluid inlet and outlet displacement.

[0105] In the embodiment of the present invention, the calculation module 13 is specifically used for:

[0106] When the outer sleeve of the hydraulic bushing is displaced, a first pressure difference between the first liquid chamber and a second pressure difference between the second liquid chamber are calculated according to a mathematical model;

[0107] Generate the total pressure equation based on the obtained spring force, damper force and pressure;

[0108] The fluid motion equation in the intertidal zone is established according to the cross-sectional area of ​​the inertial passage, the first pressure difference of the first liquid chamber and the second pressure difference of the second liquid chamber;

[0109] If the motion of the displacement of the outer cylinder and the displacement of the fluid in the inertial passage is harmonious, then the motion equations of the displacement of the outer cylinder, the displacement of the fluid in the inertial passage and the total pressure displacement are established;

[0110] The motion equations of the outer cylinder displacement, the fluid displacement in the inertial passage and the total pressure displacement are substituted into the total pressure equation and the motion equation of the fluid in the intertidal zone to generate characteristic values ​​of the hydraulic bushing.

[0111] In the embodiment of the present invention, the calculation module 13 is specifically used for:

[0112] Generate a total volume change value of the first liquid chamber according to the displacement and the cross-sectional area of ​​the first liquid chamber;

[0113] The amount of liquid discharged from the second liquid chamber is generated according to the cross-sectional area of ​​the inertial passage and the displacement of the fluid in the inertial passage;

[0114] generating a first pressure difference of the first liquid chamber according to the volume stiffness of the first liquid chamber, the total volume change value of the first liquid chamber, and the amount of liquid discharged from the second liquid chamber;

[0115] A second pressure difference in the second liquid chamber is generated according to the volumetric stiffness of the second liquid chamber, the displacement, the cross-sectional area of ​​the second liquid chamber, the cross-sectional area of ​​the inertial passage, and the displacement of the fluid in the inertial passage.

[0116] In the embodiment of the present invention, the calculation module 13 is specifically used for:

[0117] Generate spring force based on primary rubber stiffness and displacement;

[0118] generating a damper force based on the damping coefficient and the displacement;

[0119] The pressure is generated according to the first liquid chamber cross-sectional area, the first pressure difference of the first liquid chamber, the second liquid chamber cross-sectional area, and the second pressure difference of the second liquid chamber.

[0120] In the embodiment of the present invention, the characteristic values ​​further include dynamic stiffness, loss coefficient and loss angle.

[0121] In the embodiment of the present invention, the analysis module 14 is specifically used for:

[0122] When the loss stiffness increases, the vibration reduction force increases and the resonance displacement decreases;

[0123] When storage stiffness decreases, the transmission force decreases and vibration insulation increases;

[0124] Shift the resonant frequency toward the area where the hydraulic bushing is not used.

[0125] In the technical solution provided by the embodiment of the present invention, mathematical modeling is performed on the hydraulic bushing to generate a mathematical model; modeling data of the mathematical model is obtained; the modeling data is calculated according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, and the characteristic values ​​include storage stiffness and loss stiffness; vibration reduction analysis is performed on the hydraulic bushing according to the storage stiffness and loss stiffness. In the technical solution provided by the embodiment of the present invention, vibration reduction analysis is performed on the hydraulic bushing through mathematical modeling, which improves the accuracy of vibration reduction analysis of the hydraulic bushing and has a good vibration reduction effect.

[0126] The vibration reduction analysis device of the hydraulic bushing provided in the embodiment of the present invention can be used to achieve the above Figure 1 The vibration reduction analysis method of the hydraulic bushing in the embodiment of the vibration reduction analysis method of the hydraulic bushing can be described in detail, and will not be repeated here.

[0127] An embodiment of the present invention provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the embodiment of the above-mentioned vibration reduction analysis method for the hydraulic bushing. For a specific description, please refer to the embodiment of the above-mentioned vibration reduction analysis method for the hydraulic bushing.

[0128] An embodiment of the present invention provides a computer device, including a memory and a processor, the memory is used to store information including program instructions, the processor is used to control the execution of the program instructions, and the program instructions, when loaded and executed by the processor, implement the steps of the embodiment of the above-mentioned vibration reduction analysis method of the hydraulic bushing. For a specific description, please refer to the embodiment of the above-mentioned vibration reduction analysis method of the hydraulic bushing.

[0129] Figure 5 A schematic diagram of a computer device provided by an embodiment of the present invention. Figure 5 As shown, the computer device 20 of this embodiment includes: a processor 21, a memory 22, and a computer program 23 stored in the memory 22 and executable on the processor 21. When the computer program 23 is executed by the processor 21, the vibration reduction analysis method applied to the hydraulic bushing in the embodiment is implemented. To avoid repetition, it is not described one by one here. Alternatively, when the computer program is executed by the processor 21, the functions of each model / unit in the vibration reduction analysis device applied to the hydraulic bushing in the embodiment are implemented. To avoid repetition, it is not described one by one here.

[0130] The computer device 20 includes, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will appreciate that Figure 5 It is only an example of the computer device 20 and does not constitute a limitation of the computer device 20. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the computer device may also include input and output devices, network access devices, buses, etc.

[0131] The processor 21 may be a central processing unit (CPU), or 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. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0132] The memory 22 may be an internal storage unit of the computer device 20, such as a hard disk or memory of the computer device 20. The memory 22 may also be an external storage device of the computer device 20, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the computer device 20. Further, the memory 22 may also include both an internal storage unit of the computer device 20 and an external storage device. The memory 22 is used to store computer programs and other programs and data required by the computer device. The memory 22 may also be used to temporarily store data that has been output or is to be output.

[0133] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0134] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0135] 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 of this embodiment.

[0136] In addition, each functional unit in each embodiment of the present invention 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 hardware plus software functional units.

[0137] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (Processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0138] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vibration reduction analysis method for a hydraulic bushing, characterized in that: include: Mathematically model the hydraulic bushing and generate a mathematical model; Acquiring modeling data of the mathematical model; Calculating the modeling data according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, wherein the characteristic values ​​include storage stiffness and loss stiffness; A vibration reduction analysis is performed on the hydraulic bushing according to the storage stiffness and the loss stiffness.

2. The method according to claim 1, characterized in that The modeling data includes: main rubber stiffness, damping coefficient, first liquid chamber volume stiffness, second liquid chamber volume stiffness, first liquid chamber pressure, second liquid chamber pressure, first liquid chamber cross-sectional area, second liquid chamber cross-sectional area, inertial passage cross-sectional area, inertial passage fluid mass, inertial passage fluid damping force, inertial passage tension, outer cylinder displacement, inertial passage fluid displacement, first liquid chamber fluid inlet and outlet displacement and second liquid chamber fluid inlet and outlet displacement.

3. The method according to claim 2, characterized in that The step of calculating the modeling data according to the mathematical model to generate a characteristic value of the hydraulic bushing includes: When the outer sleeve of the hydraulic bushing is displaced, a first pressure difference between the first liquid chamber and a second pressure difference between the second liquid chamber are calculated according to the mathematical model; Generate the total pressure equation based on the obtained spring force, damper force and pressure; Establishing a fluid motion equation in the intertidal zone according to the cross-sectional area of ​​the inertial passage, the first pressure difference of the first liquid chamber, and the second pressure difference of the second liquid chamber; If the motions of the displacement of the outer cylinder and the displacement of the fluid in the inertial passage are coordinated, then the motion equations of the displacement of the outer cylinder, the displacement of the fluid in the inertial passage and the total pressure displacement are established; The motion equations of the outer cylinder displacement, the fluid displacement in the inertial passage, and the total pressure displacement are substituted into the total pressure equation and the motion equation of the fluid in the intertidal zone to generate characteristic values ​​of the hydraulic bushing.

4. The method according to claim 3, characterized in that Calculating the first pressure difference of the first liquid chamber and the second pressure difference of the second liquid chamber according to the mathematical model includes: generating a total volume change value of the first liquid chamber according to the displacement and the cross-sectional area of ​​the first liquid chamber; generating an amount of liquid discharged from the second liquid chamber according to a cross-sectional area of ​​the inertia passage and a displacement of the fluid in the inertia passage; generating a first pressure difference of the first liquid chamber according to the volume stiffness of the first liquid chamber, the total volume change value of the first liquid chamber, and the amount of liquid discharged from the second liquid chamber; A second pressure difference of the second liquid chamber is generated according to the volumetric rigidity of the second liquid chamber, the displacement, the cross-sectional area of ​​the second liquid chamber, the cross-sectional area of ​​the inertia passage, and the displacement of the fluid in the inertia passage.

5. The method according to claim 3, characterized in that: The step of generating the total pressure equation according to the obtained spring force, damper force and pressure includes: generating the spring force according to the primary rubber stiffness and the displacement; generating the damper force based on the damping coefficient and the displacement; The pressure is generated based on the first liquid chamber cross-sectional area, the first pressure difference of the first liquid chamber, the second liquid chamber cross-sectional area, and the second pressure difference of the second liquid chamber.

6. The method according to claim 1, characterized in that The characteristic values ​​also include dynamic stiffness, loss coefficient and loss angle.

7. The method according to claim 1, characterized in that The performing vibration reduction analysis on the hydraulic bushing according to the storage stiffness and the loss stiffness comprises: When the loss stiffness increases, the vibration reduction force increases and the resonance displacement decreases; When the storage stiffness is reduced, the transmission force is reduced and the vibration insulation is improved; Shift the resonant frequency toward the area where the hydraulic bushing is not used.

8. A vibration reduction analysis device for a hydraulic bushing, characterized in that: include: A modeling module is used for mathematical modeling of the hydraulic bushing and generating a mathematical model; An acquisition module, used for acquiring modeling data of the mathematical model; A calculation module, used for calculating the modeling data according to the mathematical model to generate characteristic values ​​of the hydraulic bushing, wherein the characteristic values ​​include storage stiffness and loss stiffness; An analysis module is used to perform vibration reduction analysis on the hydraulic bushing according to the storage stiffness and the loss stiffness.

9. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the vibration reduction analysis method of the hydraulic bushing according to any one of claims 1 to 7.

10. A computer device comprising a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, characterized in that: When the program instructions are loaded and executed by the processor, the steps of the vibration reduction analysis method of the hydraulic bushing described in any one of claims 1 to 7 are implemented.

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