CN112818539B - Sound insulation design method and sound insulation design system for windows - Google Patents

Abstract

The invention discloses a sound insulation design method and a sound insulation design system for a window, wherein the window includes an inner glass and an outer glass arranged at intervals, and an air layer exists between the inner glass and the outer glass , the sound insulation design method includes: step S1, obtaining the sound insulation performance parameters of the inner glass, the outer glass, and the air layer; step S2, calculating the sound insulation performance parameters of the window according to the sound insulation performance parameters Theoretical sound insulation; step S3, judge whether the theoretical sound insulation reaches the target sound insulation, if not, perform the following step S4; step S4, adjust the sound insulation performance parameters, and repeatedly execute the steps S1 to the steps S3. Using the above-mentioned sound insulation design method, the design of window sound insulation is mainly carried out through simulation calculation, the design cycle is short, and timely feedback can be made to different design schemes, which is also convenient for scheme adjustment, and has high timeliness. Effectively reduce design costs.

Description

Sound insulation design method and sound insulation design system for windows

technical field

The invention relates to the technical field of sound insulation design, in particular to a sound insulation design method and a sound insulation design system for windows.

Background technique

With the rapid development of rail vehicle technology, the running speed of rail vehicles has been greatly increased, resulting in a significant increase in noise sources outside the vehicle, which seriously affects the comfort of passengers and poses a more severe challenge to the noise control of the vehicle.

Research experience shows that when a rail vehicle is running at high speed, the contribution of the side wall area to the interior noise is obvious, second only to the floor area, and when the rail vehicle is running in a tunnel, the contribution of the side wall area is equivalent to that of the floor area, so , strengthening the sound insulation optimization design of the side wall area is of great significance to improve the noise inside the car, while the window area, which accounts for only about 20% of the total area of the side wall (excluding the door), plays a significant role in the sound insulation of the side wall area. important role.

Contents of the invention

The purpose of the present invention is to provide a sound insulation design method and sound insulation design system for windows, wherein the sound insulation design method can design the sound insulation of windows, and the design cycle is short and has high timeliness.

In order to solve the above technical problems, the present invention provides a sound insulation design method for a window, the window includes an inner glass and an outer glass arranged at intervals, an air layer exists between the inner glass and the outer glass, The sound insulation design method includes: step S1, obtaining the sound insulation performance parameters of the inner glass, the outer glass, and the air layer; step S2, calculating the theoretical window theory according to the sound insulation performance parameters Sound insulation: step S3, judge whether the theoretical sound insulation reaches the target sound insulation, if not, execute the following step S4; step S4, adjust the sound insulation performance parameters, and repeatedly execute the steps S1 to S3 .

Using the above-mentioned sound insulation design method, the design of window sound insulation is mainly carried out through simulation calculation, the design cycle is short, and timely feedback can be made to different design schemes, which is also convenient for scheme adjustment, and has high timeliness. Effectively reduce design costs.

Optionally, the sound insulation performance parameters include density, elastic modulus, shear modulus and structural damping.

Optionally, at least one of the inner glass and the outer glass is a multilayer structure, the sound insulation performance parameter of the multilayer structure is an equivalent parameter, and the multilayer structure includes n layers , in the step S1, the equivalent parameters are obtained by the following formula:

Formula 1: ρ ₁ ×H ₁ +ρ ₂ ×H ₂ +…+ρ _n ×H _n =ρ _equivalent ×H _equivalent ;

Formula 2: E ₁ ×I ₁ +E ₂ ×I ₂ +…+E _n ×I _n =E _equivalent ×I _equivalent ;

Formula three:

Among them, ρ ₁ , ρ ₂ ... ρ _n are the densities of each layer in the multilayer structure respectively, and ρ _{is equivalent} to the equivalent density; H ₁ , H ₂ ... H _n are the densities of each layer in the multilayer structure respectively. Thickness, H _{is equivalent} to the equivalent thickness, which is the sum of the thicknesses of the layers in the multilayer structure; E ₁ , E ₂ ... E _n are the elastic modulus of each layer in the multilayer structure, E _{, etc. I 1 , I 2 .} ν is the Poisson's ratio of the glass.

计算所述结构阻尼，其中，η_i为1/3倍f_i对应的所述结构阻尼。Optionally, the structural damping of the inner glass and the outer glass is obtained through actual measurement, and in the step S1, the structural damping of the inner glass and the outer glass is obtained The steps are as follows: step S11, install the sample to be tested on the test window, and set a vibration sensor on the surface of the sample to be tested, the sample to be tested is the inner glass and the outer glass; step S12, applying vibration excitation to the sample to be tested; step S13, obtaining the time T _setting corresponding to the vibration signal attenuation set value measured by the vibration sensor; step S14, according to

Calculate the structural damping, wherein η _i is the structural damping corresponding to 1/3 times f _i .

Optionally, the step S12 is specifically to apply a vibration signal to the sample to be tested through a hammer; and/or, the set value in the step S13 is 55dB-65dB.

Optionally, the step S2 is specifically calculating the theoretical sound insulation of the window by using a double wall structure model.

Optionally, before the step S3, the method further includes: step S0, acquiring the target sound insulation.

Optionally, in the step S3, if the theoretical sound insulation reaches the target sound insulation, perform the following step S5; step S5, make a window sample, and test the measured sound insulation of the window sample ; Step S6, judging whether the measured sound insulation reaches the target sound insulation, if not, execute the step S4.

The present invention also provides a sound insulation design system for windows, the window includes an inner glass and an outer glass arranged at intervals, an air layer exists between the inner glass and the outer glass, and the sound insulation design The system includes: an acquisition module, used to acquire the sound insulation performance parameters of the inner glass, the outer glass, and the air layer; a calculation module, connected with the signal of the acquisition module, and used to receive the parameters obtained by the acquisition module The sound insulation performance parameters of the window are used to calculate the theoretical sound insulation of the window according to the sound insulation performance parameters; the judgment module is connected to the calculation module with a signal, and is used to receive the theoretical sound insulation obtained by the calculation module. sound volume, and is used to judge whether the theoretical sound insulation has reached the target sound insulation; the adjustment module is signal-connected with the acquisition module and the judgment module, and is used for judging in the judgment module that the theoretical sound insulation has not reached the Adjust the sound insulation performance parameters when the target sound insulation amount is used.

Since the above sound insulation design method already has the above technical effect, then the sound insulation design system corresponding to the sound insulation design method should also have a similar technical effect, so it will not be repeated here.

Optionally, the sound insulation performance parameters include density, elastic modulus, shear modulus and structural damping.

Optionally, the acquisition module includes a first acquisition unit, a second acquisition unit, and a third acquisition unit, at least one of the inner glass and the outer glass is a multilayer structure, and the multilayer structure The sound insulation performance parameter is an equivalent parameter, the multi-layer structure includes n layers, the first acquisition unit is used to obtain the equivalent density according to the following formula one, and the second acquisition unit is used to obtain the equivalent density according to the following formula Formula 2 obtains the equivalent elastic modulus, and the third obtaining unit is used to obtain the equivalent shear modulus according to the following formula 3;

Formula 1: ρ ₁ ×H ₁ +ρ ₂ ×H ₂ +…+ρ _n ×H _n =ρ _equivalent ×H _equivalent ;

Formula 2: E ₁ ×I ₁ +E ₂ ×I ₂ +…+E _n ×I _n =E _equivalent ×I _equivalent ;

Formula three:

Among them, ρ ₁ , ρ ₂ ... ρ _n are the densities of each layer in the multilayer structure respectively, and ρ _{is equivalent} to the equivalent density; H ₁ , H ₂ ... H _n are the densities of each layer in the multilayer structure respectively. Thickness, H _{is equivalent} to the equivalent thickness, which is the sum of the thicknesses of the layers in the multilayer structure; E ₁ , E ₂ ... E _n are the elastic modulus of each layer in the multilayer structure, E _{, etc. I 1 , I 2 .} ν is the Poisson's ratio of the glass.

计算所述结构阻尼，η_i为1/3倍f_i对应的所述结构阻尼；所述获取模块与所述计算单元信号连接，所述获取模块用于获取所述计算单元得到的所述结构阻尼。Optionally, a first test module is also included, and the first test module includes: a test window for installing a sample to be tested, the sample to be tested is the inner glass and the outer glass; vibration The application unit is used to apply vibration excitation to the sample to be tested; the vibration sensor is installed on the sample to be tested to detect the vibration signal; the fourth acquisition unit is connected to the vibration sensor signal and used to obtain The vibration signal measured by the vibration sensor; the fifth acquisition unit, which is connected to the fourth acquisition unit, is used to acquire the time T _setting corresponding to the vibration signal attenuation set value; the calculation unit is used to set according to

Calculate the structural damping, η _i is the structural damping corresponding to 1/3 times f _i ; the acquisition module is connected to the calculation unit signal, and the acquisition module is used to acquire the structure obtained by the calculation unit damping.

Optionally, a second test module is also included, and the second test module includes: a test unit for testing the measured sound insulation of the finished window sample; a judging unit that is compatible with the test unit and the adjustment module. signal connection, for receiving the measured sound insulation and judging whether the measured sound insulation has reached the target sound insulation, and the adjustment module is also used for judging that the measured sound insulation has not reached the target in the judging unit When adjusting the sound insulation performance parameters, adjust the sound insulation performance parameters.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the sound insulation design method of window provided by the present invention;

Figure 2 is a schematic diagram of the structure of the outer glass before and after equivalent;

Fig. 3 is a structural schematic diagram of a specific embodiment of the sound insulation design system for windows provided by the present invention.

The reference numerals in Fig. 3 are explained as follows:

1 acquisition module, 11 first acquisition unit, 12 second acquisition unit, 13 third acquisition unit, 2 calculation module, 3 judgment module, 4 adjustment module, 5 first test module, 51 test window, 52 vibration application unit, 53 Vibration sensor, 54 fourth acquisition unit, 55 fifth acquisition unit, 56 calculation unit, 6 second test module, 61 test unit, 62 judgment unit.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Words such as "first" and "second" mentioned in this article are only for the convenience of describing two or more structures or components with the same or similar structure and/or function, and do not represent any order and/or importance. some special limit.

Please refer to Fig. 1-Fig. 3, Fig. 1 is a structural schematic diagram of a specific embodiment of the sound insulation design method for windows provided by the present invention, Fig. 2 is a structural schematic diagram of the outer glass before and after equivalent, and Fig. 3 is a structural schematic diagram of the present invention A structural schematic diagram of a specific embodiment of a sound insulation design system for windows is provided.

Embodiment one

In the traditional scheme, for the design of window sound insulation, it is generally used to design different window samples and organize experimental tests to verify the optimization effect and the final structure, which requires a lot of manpower and material resources, and design and The test period is long, not time-sensitive, and unable to respond quickly to changes in the plan.

Therefore, the present invention provides a sound insulation design method for a window, the window includes an inner glass and an outer glass arranged at intervals, and there is an air layer between the inner glass and the outer glass, that is to say, the embodiment of the present invention The sound insulation design method presented is mainly for windows with double glazing.

Specifically, the sound insulation design method includes: step S1, obtaining the sound insulation performance parameters of the inner glass, outer glass, and air layer; step S2, calculating the theoretical sound insulation of the window according to the sound insulation performance parameters; step S3, judging Whether the theoretical sound insulation reaches the target sound insulation, if not, perform the following step S4; step S4, adjust the sound insulation performance parameters, and repeatedly perform steps S1 to S3.

Using the above-mentioned sound insulation design method, the design of window sound insulation is mainly carried out through simulation calculation, the design cycle is short, and timely feedback can be made to different design schemes, which is also convenient for scheme adjustment, and has high timeliness. Effectively reduce design costs.

Here, the embodiment of the present invention does not limit which parameters are specifically included in the above-mentioned sound insulation performance parameters, and those skilled in the art can select according to the specific needs of the constructed calculation model in actual application. Generally speaking, the above-mentioned sound insulation performance parameters can include density, elastic modulus, shear modulus, and structural damping; in addition, it can also include structural dimensions such as the width, height, and thickness of inner glass and outer glass parameter.

In practice, both the inner glass and the outer glass can be made of single-layer glass. At this time, the aforementioned sound insulation performance parameters such as density, elastic modulus, shear modulus, and structural damping can be directly obtained by looking up the table. The structural size parameters of the inner glass and the outer glass can be obtained according to the installation conditions (window frame size).

In practice, in order to meet the requirements of structural strength and sound insulation performance, at least one of the inner glass and the outer glass will adopt a multi-layer structure. Generally speaking, it is mainly the outer glass. This multi-layer structure can be glass +The structure of the film can also be multi-layer laminated glass, that is, there are multiple glass layers spaced apart, and an adhesive layer is filled between two adjacent glass layers.

In this case, as shown in Figure 2, the sound insulation design method provided by the embodiment of the present invention can be equivalent to a single-layer structure with uniform structural dimensions (width L, thickness H, and height) to simplify The model design of the whole window, correspondingly, the sound insulation performance parameter of this multi-layer structure can be equivalent parameter, assume that this multi-layer structure has n layers, in step S1, equivalent parameter can be obtained by following formula:

Formula 1: ρ ₁ ×H ₁ +ρ ₂ ×H ₂ +…+ρ _n ×H _n =ρ _equivalent ×H _equivalent ;

Formula 2: E ₁ ×I ₁ +E ₂ ×I ₂ +…+E _n ×I _n =E _equivalent ×I _equivalent ;

Formula three:

Among them, ρ ₁ , ρ ₂ ... ρ _n are the densities of each layer in the multilayer structure, and ρ _{is equivalent} to the equivalent density; H ₁ , H ₂ ... H _n are the thicknesses of each layer in the multilayer structure, H _{, etc. Efficiency} is the equivalent thickness, which is the sum of the thicknesses of each layer in the multilayer structure, that is, H _equivalent =H ₁ +H ₂ +...+H _n ; E ₁ , E ₂ ...E _n are the thicknesses of each layer in the multilayer structure The elastic modulus of the layer, E _{is equivalent} to the equivalent elastic modulus; I ₁ , I ₂ ... I _n are the section moments of inertia of each layer in the multi-layer structure, and I _{is equivalent} to the equivalent section inertia moment, because the window structure Each layer in the window is relatively flat, and the window structure is roughly rectangular. Therefore, each section moment of inertia can be calculated according to the calculation formula of rectangular section moment of inertia; G _{is equivalent} to the equivalent shear modulus, and ν is the Poisson's ratio of glass , is a constant.

Structural damping is mainly related to the structural size parameters and materials of the corresponding layers. Under the condition that the material is determined, it is mainly related to the structural size parameters of the corresponding layers. In the embodiment of the present invention, the structural damping of the inner glass and the outer glass can be obtained through actual measurement, so as to improve the accuracy of the obtained structural damping.

计算结构阻尼，其中，η_i为1/3倍f_i对应的结构阻尼。In detail, in step S1, the acquisition steps of the structural damping of the inner layer glass and the outer layer glass are as follows: step S11, the sample to be tested is installed on the test window 51, and the vibration sensor 53 is arranged on the surface of the sample to be tested , the samples to be tested are inner glass and outer glass; step S12, applying vibration excitation to the sample to be tested; step S13, obtaining the time T _setting corresponding to the vibration signal attenuation set value measured by the vibration sensor 53; Step S14, according to

Calculate the structural damping, where η _i is the structural damping corresponding to 1/3 times f _i .

The number and installation positions of the vibration sensors 53 can be adjusted according to actual needs, as long as the usage requirements can be met. Generally speaking, the number of vibration sensors 53 can be more than three. The vibration excitation can be provided by the vibration applying unit 52, and the structure of the vibration applying unit 52 can be various, as long as it can meet the requirements of use. Generally speaking, the vibration applying unit 52 can be a hammer. The above set value can be set according to needs, and in a specific embodiment, the set value can be 55dB-65dB, such as 60dB.

The above f _i is a frequency band. The specific frequency range can refer to the frequency range of the noise source that the window needs to face in the actual application scene. Taking the application of the rail vehicle as an example, it is necessary to refer to the frequency range of the noise such as the wheel rail outside the vehicle .

Through the above method, the structural damping used in the embodiment of the present invention is a characteristic curve that varies with frequency, which can have higher calculation accuracy than the traditional calculation method that only uses a single value; moreover, the above-mentioned structural damping The acquisition method is through the method of test + simulation calculation. In the test stage, only the samples prepared by a separate inner glass and outer glass are needed, and there is no need to assemble the inner glass and outer glass into a complete window, which can reduce the number of tests. The production time and cost of the sample can improve the efficiency of the test, and then cooperate with the simulation calculation to quickly and accurately obtain the structural damping parameters.

Different from parameters such as density, elastic modulus, and shear modulus, the parameters of structural damping are mainly related to the structural dimensions of the inner glass and outer glass. In window design, limited by the shape of the window frame and the total thickness H, the actual In fact, the changes in the structural dimensions of the inner glass, the air layer, and the outer glass are not very obvious, and their influence on the structural damping is also small. Therefore, when adjusting the sound insulation performance parameters in step S4, in fact, it is mainly For the adjustment of parameters such as density, elastic modulus, and shear modulus, of course, if the thickness of a certain layer (such as the outer layer of glass) changes greatly, the above steps S11 to S14 can also be performed again to obtain new structural damping parameters, and substitute the new structural damping parameters into step S2 for calculation.

The calculation of the theoretical sound insulation in step S2 can specifically be calculated through a double-layer wall structure model. The double-layer wall structure model is an existing model in the prior art, and its specific calculation method will not be described in detail here. . In addition to the double wall structure model, other structural models can also be used, as long as the sound insulation can be calculated.

Before step S3, it may also include: step S0, acquiring the target sound insulation. The target sound insulation is a known value, which can be directly given by those skilled in the art based on experience; or, it can also be obtained through simulation design in combination with the actual use environment of the window. Taking the application to rail vehicles as an example, in practice, it can be based on The running speed of the rail vehicle determines the intensity of the wheel-rail noise outside the car, and then takes the noise control index inside the car as the analysis target, and uses the vehicle simulation analysis model to determine the sound insulation design index of each part, which can specifically include the floor area, side wall area, and car door structure , window structure, etc., so that the target sound insulation can be obtained.

Further, in step S3, if the theoretical sound insulation reaches the target sound insulation, perform the following step S5; step S5, make a window sample, and test the measured sound insulation of the window sample; step S6, judge whether the measured sound insulation is The target sound insulation is reached, if not, execute the aforementioned step S4.

In step S1 to step S3, it is mainly the theoretical calculation and judgment stage of the window sound insulation. When the theoretical calculation meets the requirements, the embodiment of the present invention can also be further tested and verified. The window sample can be based on satisfying the theoretical calculation. The parameters of the conditions are designed. In step S5, the test method for the measured sound insulation of the window sample is relatively mature in the prior art. It can be directly tested in the corresponding laboratory according to the corresponding standard, and will not be described in detail here. instruction of.

In this way, through the combination of simulation analysis and experiments, the embodiment of the present invention can quickly and accurately optimize the design of the sound insulation of the window, which can better meet the requirements of use.

It should be emphasized that although the sound insulation design method of windows provided by the present invention is born out of the sound insulation optimization design of rail vehicle windows, it is obvious that its application scope is not limited to the field of rail vehicles, but in the field of automobiles and even the field of house construction Fields that require the use of windows are actually applicable, that is to say, the field of application cannot be used as a limitation on the scope of implementation of the sound insulation design method for windows provided by the present invention.

Embodiment two

The present invention also provides a sound insulation design system for windows. The sound insulation design system corresponds to the sound insulation design method involved in Embodiment 1, and the repeated parts will not be described in detail in this embodiment.

The window that the sound insulation design system provided in this embodiment also includes an inner glass and an outer glass arranged at intervals, and there is an air layer between the inner glass and the outer glass. The sound insulation design system may specifically include: an acquisition module 1 , used to obtain the sound insulation performance parameters of the inner glass, outer glass, and air layer; the calculation module 2, connected to the signal acquisition module 1, is used to receive the sound insulation performance parameters obtained by the acquisition module 1, and is used to obtain the sound insulation performance parameters according to the sound insulation performance The theoretical sound insulation of the window is calculated by parameters; the judgment module 3 is connected with the signal of the calculation module 2, and is used to receive the theoretical sound insulation obtained by the calculation module 2, and is used to judge whether the theoretical sound insulation reaches the target sound insulation; the adjustment module 4 is connected with the acquisition module 1 and the judging module 3 are signal-connected, and are used to adjust the sound insulation performance parameters when the judging module 3 judges that the theoretical sound insulation has not reached the target sound insulation.

Since the sound insulation design method in Embodiment 1 already has the above technical effects, the sound insulation design system corresponding to the sound insulation design method should also have similar technical effects, so details are not repeated here.

The above-mentioned sound insulation performance parameters may include density, elastic modulus, shear modulus, structural damping, and the like.

Similar to Embodiment 1, the material of the inner glass and the outer glass can be a single layer, or at least one of them can be a multi-layer structure. The following embodiment mainly focuses on the solution with a multi-layer structure.

The acquisition module 1 may include a first acquisition unit 11, a second acquisition unit 12, and a third acquisition unit 13. The sound insulation performance parameter of the multi-layer structure is an equivalent parameter, and the first acquisition unit 11 is used to obtain Equivalent density, the second obtaining unit 12 is used to obtain the equivalent elastic modulus according to the following formula two, and the third obtaining unit 13 is used to obtain the equivalent shear modulus according to the following formula three;

Formula 1: ρ ₁ ×H ₁ +ρ ₂ ×H ₂ +…+ρ _n ×H _n =ρ _equivalent ×H _equivalent ;

Formula 2: E ₁ ×I ₁ +E ₂ ×I ₂ +…+E _n ×I _n =E _equivalent ×I _equivalent ;

Formula three:

Among them, ρ ₁ , ρ ₂ ... ρ _n are the densities of each layer in the multilayer structure, and ρ _{is equivalent} to the equivalent density; H ₁ , H ₂ ... H _n are the thicknesses of each layer in the multilayer structure, H _{, etc. Efficiency} is the equivalent thickness, which is the sum of the thicknesses of each layer in the multilayer structure, that is, H _equivalent =H ₁ +H ₂ +...+H _n ; E ₁ , E ₂ ...E _n are the thicknesses of each layer in the multilayer structure The elastic modulus of the layer, E _{is equivalent} to the equivalent elastic modulus; I ₁ , I ₂ ... I _n are the section moments of inertia of each layer in the multi-layer structure, and I _{is equivalent} to the equivalent section inertia moment, because the window structure Each layer in the window is relatively flat, and the window structure is similar to a rectangle. Therefore, each section moment of inertia can be calculated according to the calculation formula of the section moment of inertia of a rectangle; G _{is equivalent} to the equivalent shear modulus, and ν is the Poisson's ratio of the glass , is a constant.

计算结构阻尼，η_i为1/3倍f_i对应的结构阻尼。Further, the first test module 5 may also be included, and the first test module 5 may include: a test window 51 for installing a sample to be tested, the sample to be tested is an inner glass and an outer glass; a vibration applying unit 52, Used to apply vibration excitation to the sample to be tested, specifically components such as a hammer; the vibration sensor 53 is arranged on the surface of the sample to be tested, and specifically can be fixed by bonding to detect vibration signals; the fourth acquisition unit 54, for signal connection with the vibration sensor 53, to obtain the vibration signal measured by the vibration sensor 53; the fifth acquisition unit 55, for signal connection with the fourth acquisition unit 54, for obtaining the time corresponding to the vibration signal attenuation set value T _setting ; calculation unit 56, for according to

To calculate the structural damping, η _i is the structural damping corresponding to 1/3 times f _i .

The acquisition module 1 can be connected to the calculation unit 56 in signal, and the acquisition module 1 is used to acquire the structural damping obtained by the calculation unit 56 . In a specific practice, the aforementioned fourth acquisition unit 54 , fifth acquisition unit 55 , and calculation unit 56 can be integrated together to form an independent device, such as a vibration signal analysis device and the like.

Further, the second test module 6 can also be included, and the second test module 6 can include: a test unit 61, which is used to test the measured sound insulation of the window sample that is made; a judgment unit 62, which can be connected with the test unit 61 and the adjustment module 4 average signal connection, used to receive the measured sound insulation and judge whether the measured sound insulation reaches the target sound insulation, and the adjustment module 4 is also used to adjust the sound insulation performance parameters when the judgment unit 62 judges that the measured sound insulation has not reached the target sound insulation.

In this way, the reliability of the window sound insulation design results can be more effectively guaranteed by means of test verification.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered as Be the protection scope of the present invention.

Claims (7)

1. A method for sound insulation design of a window, said window comprising inner glass and outer glass arranged at intervals, there is an air layer between said inner glass and said outer glass, it is characterized in that said insulating Sound design methods include: Step S1, obtaining the sound insulation performance parameters of the inner glass, the outer glass, and the air layer; Step S2, calculating the theoretical sound insulation of the window according to the sound insulation performance parameters; Step S3, judging whether the theoretical sound insulation reaches the target sound insulation, if not, execute the following step S4; Step S4, adjusting the sound insulation performance parameters, and repeatedly executing the steps S1 to S3; The sound insulation performance parameters include density, elastic modulus, shear modulus and structural damping; At least one of the inner glass and the outer glass is a multi-layer structure, the sound insulation performance parameter of the multi-layer structure is an equivalent parameter, the multi-layer structure includes n layers, and in the In step S1, the equivalent parameters are obtained by the following formula: Formula 1: ρ ₁ ×H ₁ +ρ ₂ ×H ₂ +…+ρ _n ×H _n =ρ _equivalent ×H _equivalent ; Formula 2: E ₁ ×I ₁ +E ₂ ×I ₂ +…+E _n ×I _n =E _equivalent ×I _equivalent ; Formula three:

Among them, ρ ₁ , ρ ₂ ... ρ _n are the densities of each layer in the multilayer structure respectively, and ρ _{is equivalent} to the equivalent density; H ₁ , H ₂ ... H _n are the densities of each layer in the multilayer structure respectively. Thickness, H _{is equivalent} to the equivalent thickness, which is the sum of the thicknesses of the layers in the multilayer structure; E ₁ , E ₂ ... E _n are the elastic modulus of each layer in the multilayer structure, E _{, etc. I 1 , I 2 .} amount, v is the Poisson's ratio of the glass; The structural damping of the inner glass and the outer glass is obtained through actual measurement. In the step S1, the steps for obtaining the structural damping of the inner glass and the outer glass are as follows: Step S11, install the sample to be tested on the test window (51), and set a vibration sensor (53) on the surface of the sample to be tested, the sample to be tested is the inner glass and the outer layer Glass; Step S12, applying vibration excitation to the sample to be tested; Step S13, obtaining the time T _setting corresponding to the vibration signal attenuation set value measured by the vibration sensor (53); Step S14, according to

Calculating the structural damping, wherein η _i is the structural damping corresponding to 1/3 times fi _, and fi is the frequency range of the noise source that the sample to be tested needs to face _. 2. The sound insulation design method of the window according to claim 1, characterized in that, the step S12 is specifically to apply a vibration signal to the sample to be tested through a hammer; and/or, The set value in the step S13 is 55dB-65dB. 3. The sound insulation design method of the window according to claim 1 or 2, characterized in that the step S2 is specifically calculating the theoretical sound insulation of the window by using a double wall structure model. 4. The sound insulation design method for windows according to claim 1 or 2, characterized in that before the step S3, it further comprises: step S0, obtaining the target sound insulation amount. 5. The sound insulation design method for windows according to claim 1 or 2, characterized in that, in the step S3, if the theoretical sound insulation reaches the target sound insulation, the following step S5 is performed; Step S5, making a window sample, and testing the measured sound insulation of the window sample; Step S6, judging whether the measured sound insulation reaches the target sound insulation, if not, execute the step S4. 6. A sound insulation design system for a window, the window includes an inner glass and an outer glass arranged at intervals, an air layer exists between the inner glass and the outer glass, it is characterized in that the insulating The sound design system includes: An acquisition module (1), configured to acquire sound insulation performance parameters of the inner glass, the outer glass, and the air layer; A calculation module (2), signal-connected to the acquisition module (1), used to receive the sound insulation performance parameters obtained by the acquisition module (1), and to calculate the sound insulation performance parameters of the window according to the sound insulation performance parameters Theoretical sound insulation; A judging module (3), connected to the calculation module (2) with a signal, for receiving the theoretical sound insulation obtained by the calculation module (2), and for judging whether the theoretical sound insulation reaches the target sound insulation; An adjustment module (4), connected to both the acquisition module (1) and the judgment module (3) in signal connection, for when the judgment module (3) judges that the theoretical sound insulation has not reached the target sound insulation Adjusting the sound insulation performance parameters; The sound insulation performance parameters include density, elastic modulus, shear modulus and structural damping; The acquisition module (1) includes a first acquisition unit (11), a second acquisition unit (12) and a third acquisition unit (13), at least one of the inner glass and the outer glass is multiple Layer structure, the sound insulation performance parameter of the multilayer structure is an equivalent parameter, the multilayer structure includes n layers, and the first acquisition unit (11) is used to acquire equivalent density according to the following formula one, The second obtaining unit (12) is used to obtain the equivalent elastic modulus according to the following formula two, and the third obtaining unit (13) is used to obtain the equivalent shear modulus according to the following formula three; Formula 1: ρ ₁ ×H ₁ +ρ ₂ ×H ₂ +…+ρ _n ×H _n =ρ _equivalent ×H _equivalent ; Formula 2: E ₁ ×I ₁ +E ₂ ×I ₂ +…+E _n ×I _n =E _equivalent ×I _equivalent ; Formula three:

Among them, ρ ₁ , ρ ₂ ... ρ _n are the densities of each layer in the multilayer structure respectively, and ρ _{is equivalent} to the equivalent density; H ₁ , H ₂ ... H _n are the densities of each layer in the multilayer structure respectively. Thickness, H _{is equivalent} to the equivalent thickness, which is the sum of the thicknesses of the layers in the multilayer structure; E ₁ , E ₂ ... E _n are the elastic modulus of each layer in the multilayer structure, E _{, etc. I 1 , I 2 .} ν is the Poisson's ratio of the glass; It also includes a first test module (5), and the first test module (5) includes: The test window (51) is used to install the sample to be tested, and the sample to be tested is the inner glass and the outer glass; a vibration applying unit (52), configured to apply vibration excitation to the sample to be tested; A vibration sensor (53), installed on the sample to be tested, is used to detect vibration signals; A fourth acquisition unit (54), connected to the vibration sensor (53) for signal acquisition, for acquiring the vibration signal measured by the vibration sensor (53); A fifth acquisition unit (55), signal-connected to the fourth acquisition unit (54), configured to acquire the time T _setting corresponding to the vibration signal attenuation set value; Calculation unit (56), for according to

Calculate the structural damping, η _i is the structural damping corresponding to 1/3 times f _i , and f _i is the frequency range of the noise source that the sample to be tested needs to face; The acquisition module (1) is signal-connected to the calculation unit (56), and the acquisition module (1) is used to acquire the structural damping obtained by the calculation unit (56). 7. The sound insulation design system of the window according to claim 6, characterized in that, it also includes a second test module (6), and the second test module (6) includes: The test unit (61) is used to test the measured sound insulation of the finished window sample; a judging unit (62), connected to the test unit (61) and the adjustment module (4) with signals, for receiving the measured sound insulation and judging whether the measured sound insulation reaches the target sound insulation, The adjustment module (4) is further configured to adjust the sound insulation performance parameter when the judging unit (62) judges that the measured sound insulation has not reached the target sound insulation.

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