Multi-order broadband metal film acoustic metamaterial sound insulation module and sound insulation structure

Abstract

The invention discloses a multi-order broadband metal film acoustic metamaterial sound insulation module and a sound insulation structure, and belongs to the technical field of acoustic metamaterials, the multi-order broadband metal film acoustic metamaterial sound insulation module comprises a central mass block arranged in the center; the number of the mass rings is m, m is a natural number larger than 1, the m mass rings are sequentially arranged from the center to the outside, and the mass rings are arranged on the periphery of the center mass block in a surrounding mode and are arranged in a closed mode to form a ring shape. The number of the thin films is m, the m thin films are sequentially arranged from the center to the outside, and the thin films are made of metal or metal alloy. Wherein the nth mass ring is internally provided with the nth thin film, n is any natural number larger than or equal to 1 and smaller than or equal to m, and an area surrounded by the nth mass ring forms an nth-order acoustic metamaterial; according to the acoustic metamaterial, the acoustic response of the acoustic metamaterial under different frequencies can be accurately controlled, and the stability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of acoustic metamaterials, and in particular to a multi-order broadband metal film acoustic metamaterial sound insulation module and a sound insulation structure. Background Art

[0002] In recent years, acoustic metamaterials have attracted widespread attention due to their excellent low-frequency sound insulation performance. Through special microstructure design, this type of material can effectively absorb and isolate sound energy within a specific frequency range, thus showing great application potential in the fields of noise control and building sound insulation. However, existing acoustic metamaterials still face many challenges in practical applications, especially in terms of sound insulation bandwidth and weather resistance.

[0003] The existing technology mainly stacks units with different resonance peaks in the thickness direction. Although this method can widen the sound insulation band to a certain extent, it will cause the overall structure to become too thick and heavy, which is not conducive to practical application. In addition, most of the current acoustic metamaterials use non-metallic films, which have poor weather resistance and service life and are difficult to meet the long-term use requirements in some harsh environments. In short, the main problem with the existing technology is that the method of simply relying on increasing the number of layers or extending the length of the unit cell cannot take into account the requirements of thinness and broadband sound insulation. On the other hand, the weather resistance of non-metallic films is insufficient, which affects their reliability and life in certain application scenarios. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical problems and provide a multi-order broadband metal film acoustic metamaterial sound insulation module and a sound insulation structure.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A multi-order broadband metal film acoustic metamaterial sound insulation module, comprising: a central mass block, arranged at the center. m mass rings, arranged in sequence from the center to the outside, the mass rings are arranged around the periphery of the central mass block and are closed in a ring shape. m films are arranged in sequence from the center to the outside, and the film is made of metal or metal alloy; wherein the nth film is arranged in the nth mass ring, n is any natural number greater than or equal to 1 and less than or equal to m, and the area surrounded by the nth mass ring forms an nth-order acoustic metamaterial; the central mass block is fixed on the first film.

[0007] A preferred technical solution of the present invention is that the mass rings are symmetrically arranged on both sides of the membrane, and the central mass block is arranged on one side of the first membrane.

[0008] A preferred technical solution of the present invention is that the thicknesses and / or materials of the n films are different.

[0009] A preferred technical solution of the present invention is that the height of the mass ring gradually increases from the center to the outside.

[0010] The preferred technical solution of the present invention is that the height of the central mass block is h mass、 The mass is M mass ; The height of the nth mass ring is h n , mass is M frame,n , where the height of the mass ring is the distance from the top to the bottom of the mass ring; the stiffness of the nth film is K n ; The natural frequency of the nth order acoustic metamaterial is f n , where the calculation formula of the natural frequency of the first-order acoustic metamaterial is as follows, The calculation formula for the natural frequency of the nth-order acoustic metamaterial is: Where Mn is the equivalent mass of the nth film at the center, M e,n-1 is the equivalent mass of the n-1th order acoustic metamaterial.

[0011] The preferred technical solution of the present invention is that the Young's modulus of the n-th film is E, the thickness is d, the Poisson's ratio is μ, and the thickness of the film is calculated according to the stiffness of the film, which conforms to the following formula:

[0012] The preferred technical solution of the present invention is that the height of the nth mass ring (3) is h n， , the height of the mass ring (3) is the distance from the top to the film (1), and the height difference between adjacent mass rings (3) is Δh, ω=2πf n , where C 0 is the speed of sound in air, ω is the angular frequency, when the film is square, a is the side length; when the film is circular, a is the diameter; when the film is other shapes, a is the equivalent diameter of the film, at this time the equivalent diameter a=4A / L, A is the area of ​​the film, and L is the circumference of the film.

[0013] The preferred technical solution of the present invention is that the material of the mass ring is steel or aluminum alloy or carbon fiber or engineering ABS plastic; the material of the film is stainless steel or aluminum alloy; the material of the central mass block is stainless steel; the thickness of the film is ≤0.2mm; the mass ring is square or circular or regular hexagonal or triangular.

[0014] A preferred technical solution of the present invention is that three mass rings are provided and four films are provided.

[0015] A multi-order broadband metal film acoustic metamaterial sound insulation structure is composed of any one of the multi-order broadband metal film acoustic metamaterial sound insulation module arrays described above.

[0016] The beneficial effects of the present invention are:

[0017] (1) The film is made of metal or metal alloy, which can enhance its weather resistance and service life. It not only enhances the mechanical strength and stability of the material, but also greatly improves its weather resistance and service life, so that it can still maintain good performance in harsh environments.

[0018] (2) A thin film is set inside each mass ring, and a total of n thin films are set. By adjusting the thickness or material of the thin film, the acoustic response of the acoustic metamaterial at different frequencies can be precisely controlled to achieve effective absorption or isolation of sound within a specific frequency range.

[0019] (3) By arranging mass rings on both sides of the film and distributing these mass rings symmetrically around the center, a multi-order resonance structure is formed, so that each order of resonance mode can produce a resonance effect within a different frequency range, thereby effectively broadening the sound insulation frequency band.

[0020] (4) By setting the mass ring to diffuse outward in a stepped manner, the coupling effect between the mass step rings at different heights and positions and the film achieves more effective energy absorption and transfer, thereby improving the overall sound insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. For those of ordinary skill in the art, other drawings can be obtained from these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of a multi-order broadband metal film acoustic metamaterial sound insulation module provided in a specific embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of a multi-order broadband metal film acoustic metamaterial sound insulation module provided in a specific embodiment of the present invention;

[0024] Figure 3 It is a front view of the overall structure of a multi-order broadband metal film acoustic metamaterial sound insulation module provided in a specific embodiment of the present invention;

[0025] Figure 4 yes Figure 3Schematic cross-section of the middle BB;

[0026] Figure 5 1 is a schematic diagram of the overall structure of Example 2 of a multi-order broadband metal film acoustic metamaterial sound insulation module provided in a specific embodiment of the present invention;

[0027] Figure 6 1 is a schematic diagram of the overall structure of Example 3 of a multi-order broadband metal film acoustic metamaterial sound insulation module provided in a specific embodiment of the present invention;

[0028] Figure 7 1 is a schematic diagram of the overall structure of Example 4 of a multi-order broadband metal film acoustic metamaterial sound insulation module provided in a specific embodiment of the present invention;

[0029] In the figure:

[0030] 1. Film; 11. First film; 12. Second film; 13. Third film; 14. Fourth film; 15. Fifth film; 2. Central mass block; 3. Mass ring; 31. First mass ring; 32. Second mass ring; 33. Third mass ring; 34. Fourth mass ring; 35. Fifth mass ring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0032] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0033] Example 1

[0034] like Figure 1-4 As shown, the present invention provides a multi-order broadband metal film acoustic metamaterial sound insulation module, a central mass block 2, arranged at the center; m mass rings 3, arranged in sequence from the center to the outside, and the mass rings 3 are arranged around the periphery of the central mass block 2 and are closed in a ring-shaped manner. There are m films 1, arranged in sequence from the center to the outside. The material of the film 1 is metal or metal alloy, wherein the first mass ring 3 (such as Figure 3 5) is set as the first film 1 (as shown in Figure 36), a central mass block 2 is fixed on the first film 1 to form a first-order acoustic metamaterial. An nth film 1 is arranged between the nth mass ring and the n-1th mass ring, where n is any natural number greater than or equal to 1 and less than or equal to m. The area surrounded by the nth mass ring 3 forms an nth-order acoustic metamaterial, which effectively covers a wider frequency range and has excellent sound insulation performance. At the same time, due to the annular arrangement of the mass ring 3, a frame-like effect is formed on the sound insulation module, which increases the strength and stability of the sound insulation module.

[0035] like Figure 1-3 As shown, in this embodiment, three mass rings are provided, that is, m=3, and the number of the films is also m=3; then n=1 or 2 or 3.

[0036] like Figure 3 As shown in the figure, the interior of the first mass ring 31 is arranged as the first membrane 11, and the central mass block 2 is fixed on the first membrane 11 to form a first-order acoustic metamaterial.

[0037] A second film 12 is disposed between the second mass ring 32 and the first mass ring 31, and the area surrounded by the second mass ring 32 forms a second-order acoustic metamaterial. Here, the area surrounded by the second mass ring 32 is composed of the second mass ring 32, the second film 12, and all components of the first-order acoustic metamaterial.

[0038] A third film 13 is disposed between the third mass ring 33 and the second mass ring 32, and the area surrounded by the third mass ring 33 forms a third-order acoustic metamaterial. Here, the area surrounded by the third mass ring 33 is composed of the third mass ring 33, the third film 13, and all components of the second-order acoustic metamaterial.

[0039] The material of the film 1 of each stage can be different or the same.

[0040] The first film 1 is fixed with a central mass block 2 to form a first-order acoustic metamaterial. Next, the area surrounded by the nth mass ring forms an nth-order acoustic metamaterial. This multi-level structural design enables each level to effectively control and attenuate sound waves within a specific frequency range, thereby achieving a broadband sound insulation effect.

[0041] The main function of the film 1 is to absorb and isolate sound energy during resonance. The use of metal or metal alloy materials can enhance its weather resistance and service life. The film 1 is a key component connecting various mass rings. It not only plays a supporting role, but also effectively transmits and attenuates sound wave energy. The thickness of the film 1 is different, which can be calculated by the following formula. The thickness of the film 1 is ≤0.2mm. Such a thinness can reduce the dead weight while ensuring strength, and improve the lightweight level of the overall structure.

[0042] The mass rings 3 are symmetrically arranged on both sides of the film 1, and the central mass block 2 is arranged on one side of the first film 1. The symmetrical layout helps to balance the mechanical loads of each part and avoid additional vibration energy loss caused by asymmetry. The mass ring 3 gradually increases in height from the center to the outside, which better adapts to the energy distribution of sound waves of different frequencies and improves the overall sound insulation efficiency. The thickness of the film 1 will affect the impedance of the acoustic system and thus change the resonant frequency of the system. Films 1 of different thicknesses will have different vibration forms at the resonant frequency, thereby changing the energy dissipation ratio and the peak height of the absorption coefficient.

[0043] The central mass block 2 is made of stainless steel and has a height of h. mass , mass is M mass The central mass block 2 is mainly used to adjust the resonance frequency and enhance the sound insulation effect. The central mass block 2 can be fixed to the middle of one side of the film 1 by welding or bonding.

[0044] The material of the mass ring 3 is selected from materials with high specific stiffness, such as steel, aluminum alloy, carbon fiber or engineering ABS plastic. The shape of the mass ring 3 can be adjusted according to actual needs, and the common shapes are square, circle, regular hexagon or triangle to ensure the coordination and aesthetics of the structure.

[0045] When the sound waves reach the sound insulation module, part of the sound waves will be reflected back by the film 1, and the other part of the sound waves will be absorbed or continue to penetrate the sound insulation module, but the intensity will be attenuated to a certain extent. Through the vibration of the protrusion 201 on the film 1 and the mass ring 3, the propagation and interference effects of the sound waves can be minimized, thereby achieving the purpose of sound insulation.

[0046] By arranging a film 1, a central mass block 2 and a mass ring 3 inside the sound insulation module, and at the same time, using a metal film 1 to improve its weather resistance and service life, it not only solves the problem of narrow sound insulation band of traditional acoustic metamaterials, but also improves its reliability and applicability in various environments.

[0047] The mass ring 3 spreads outward in a stepped manner, and the specific height difference is as follows. The height and width of the mass ring 3 are designed to comply with a specific mathematical formula to ensure that the height difference and distance between each mass ring 3 are moderate, so that the resonant frequency distribution of each order of acoustic metamaterials is more reasonable, avoiding the overlap or loss of resonance peaks, thereby achieving a wider sound insulation frequency band.

[0048] Definition: The height of the central mass block 2 is h mass , mass is M mass ; The height of the nth mass ring 3 is h n , mass is M frame,n , where the height of mass ring 3 is the distance from the top to the membrane, and the stiffness of the nth membrane is Kn.

[0049] The natural frequency f1 of the first-order metamaterial structure 5 can be expressed by the formula Calculated, where K 1 is the stiffness of the film 1 of the first-order metamaterial structure 5, M 1 is the equivalent mass of the first film 1 at the center, M mass is the mass of the central mass block 2.

[0050] From the 2nd order onwards, the formula for calculating the natural frequency of the nth-order acoustic metamaterial is: Where Mn is the equivalent mass of the nth film at the center, M e,n-1 is the equivalent mass of the n-1th order acoustic metamaterial.

[0051] That is: the natural frequency f of the second-order acoustic metamaterial 2 The formula can be Calculated, where M e,1 =M 1 +M mass +M frame,1 , M frame,1 is the mass of the first mass ring.

[0052] The natural frequency of the third-order acoustic metamaterial:

[0053] Calculated, where M e,2 =M e,1 +M frame,2 , M frame,2 is the mass of the second mass ring.

[0054] For higher order metamaterial structures, the natural frequency f n The formula can be Calculated, where M e,n-1 =M e,n-2 +M frame,n The recursive relationship makes the natural frequency distribution of each level of metamaterial structure more uniform, avoiding excessive concentration in a single frequency band, thus achieving efficient sound insulation in a wide frequency band. The precise design of the central mass block 2 and each order of metamaterial structure ensures that each metamaterial structure has a different natural frequency, thus achieving effective sound insulation in multiple frequency bands.

[0055] The stiffness Kn of the nth film can be obtained through the natural frequencies of each order of metamaterial structures.

[0056] Definition: The Young's modulus of the nth film 1 is E, the thickness is d, the Poisson's ratio is μ, and the formula for the stiffness and thickness of the film is The thickness of the nth film can be calculated.

[0057] By precisely controlling the stiffness and thickness of each order of film 1, the natural frequency of each order can be distributed as required, thereby ensuring the sound insulation effect.

[0058] The height of the mass ring 3 of the first-order metamaterial structure 5 is h 1 The heights of the remaining mass rings from the center to the outside are h 2 、h 3 ...h n , and h mass <h 1 <h 2 <… <h n The height of the mass ring 3 decreases in a step-like manner from the top to the bottom, ensuring that each mass ring 3 and the central mass block 2 can vibrate independently without interfering with each other when subjected to external excitation, thereby avoiding the change of the resonance frequency caused by the height difference and improving the stability and sound insulation effect of each order of metamaterial structure.

[0059] The height of the nth mass ring 3 is h n , the height difference between adjacent mass rings 3 is Δh, which conforms to the following formula:

[0060] ω=2πf n

[0061] Among them C 0 is the speed of sound in air, and ω is the angular frequency.

[0062] When the film is square, a is the side length. When the film is circular, a is the diameter. When the film is other shapes, a is the equivalent diameter of the film, and the equivalent diameter a=4A / L, A is the area of ​​the film, and L is the perimeter of the film.

[0063] For example, the height difference between the first mass ring and the central mass block is: Δh 1 =h 1 -h mass The height difference between the second mass ring and the first mass ring is: Δh 2 =h 2 -h 1 The height difference between the third mass ring and the second mass ring is: Δh 3 =h 3 -h 2 .

[0064] By setting the mass ring 3 and the central mass block 2 structure on the metal film 1, the resonance effect in different frequency ranges is achieved, thereby forming a broadband sound insulation characteristic. At the same time, the metal film 1 is used to improve the weather resistance and service life of the product, and solves the problem that the traditional non-metallic film 1 is easily damaged in harsh environments. This design not only improves the sound insulation effect, but also extends the service life of the product, and is suitable for various indoor and outdoor environments.

[0065] Example 2

[0066] The difference between this embodiment and the embodiment is that in this embodiment, five mass rings are arranged, that is, m=5, and the number of the films is also m=5; then n=1, 2, 3, 4, 5.

[0067] like Figure 5 As shown in the figure, the interior of the first mass ring 31 is provided with a first film 11, and a central mass block 2 is fixed on the first film 11 to form a first-order acoustic metamaterial;

[0068] A second film 12 is disposed between the second mass ring 32 and the first mass ring 31, and the area surrounded by the second mass ring 32 forms a second-order acoustic metamaterial. Here, the area surrounded by the second mass ring 32 is composed of the second mass ring 32, the second film 12, and all components of the first-order acoustic metamaterial.

[0069] A third film 13 is disposed between the third mass ring 33 and the second mass ring 32, and the area surrounded by the third mass ring 33 forms a third-order acoustic metamaterial. Here, the area surrounded by the third mass ring 33 is composed of the third mass ring 33, the third film 13, and all components of the second-order acoustic metamaterial.

[0070] A fourth film 14 is disposed between the fourth mass ring 34 and the third mass ring 33, and the area surrounded by the fourth mass ring 34 forms a fourth-order acoustic metamaterial. Here, the area surrounded by the fourth mass ring 34 is composed of the fourth mass ring 34, the fourth film 14, and all components of the third-order acoustic metamaterial.

[0071] A fifth film 15 is disposed between the fifth mass ring 35 and the fourth mass ring 34, and the area surrounded by the fifth mass ring 35 forms a fifth-order acoustic metamaterial. Here, the area surrounded by the fifth mass ring 35 is composed of the fifth mass ring 35, the fifth film 15, and all components of the fourth-order acoustic metamaterial.

[0072] Example 3

[0073] like Figure 6 As shown, the difference between this embodiment and embodiment 1 is that the shape of the mass ring 3 is set to a regular hexagon. The regular hexagonal design can provide more resonance paths, thereby further expanding the sound insulation band. The regular hexagonal design can also improve the rigidity and stability of the structure, reduce deformation and vibration, and can provide more degrees of freedom, so that different frequency components can propagate on different paths, thereby achieving a wider range of sound insulation effects. The regular hexagonal design also helps to improve the rigidity and stability of the structure, reduce deformation and vibration, and is particularly suitable for application in high-frequency vibration environments.

[0074] Example 4

[0075] This embodiment discloses a multi-order broadband metal film acoustic metamaterial sound insulation structure, which is composed of the multi-order broadband metal film acoustic metamaterial sound insulation module arrays in Embodiments 1 to 3.

[0076] like Figure 7 As shown, when the multi-order broadband metal film acoustic metamaterial sound insulation module in Example 1 is used, it is arrayed in two directions along the x direction and the y direction, and each module is fixed by a suitable connector to form an integral sound insulation structure. Such a design can significantly improve the sound insulation effect of a large area space and is suitable for fields such as building sound insulation and industrial noise control.

[0077] The size and shape of each module can be customized according to the actual application requirements. For example, when used in building walls, the modules can be made into standard-sized rectangular panels for easy installation and maintenance. When used in vehicle noise reduction systems, the modules can be made into curved surfaces to adapt to the curves of the vehicle body. In order to improve the sealing and stability between modules, elastic gaskets or other sealing materials can be added to the module joints. This not only prevents sound leakage, but also reduces the additional noise caused by vibration between modules.

[0078] By combining multiple multi-order broadband metal film acoustic metamaterial sound insulation module arrays into an integrated sound insulation structure, the sound insulation effect of a large area can be greatly improved. This design is not only suitable for a single application scenario, but can also be flexibly adjusted according to different needs. It is widely used in many fields such as building sound insulation and industrial noise control. By personalizing the size and shape of the module and adding sealing materials at the joints, the overall performance and reliability of the system are further improved.

[0079] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A multi-order broadband metal film acoustic metamaterial sound insulation module, characterized in that ,include: A central mass block (2) is arranged at the center; The mass rings (3) are provided in m numbers, where m is a natural number greater than 1, and the m mass rings (3) are arranged in sequence from the center to the outside, and the mass rings (3) are arranged around the periphery of the central mass block (2) and are closed in a ring shape; The film (1) is provided with m pieces, and the m pieces of the film (1) are arranged in sequence from the center to the outside, and the material of the film (1) is metal or metal alloy; wherein: An nth film (1) is arranged in the nth mass ring (3), where n is any natural number greater than or equal to 1 and less than or equal to m, and the area surrounded by the nth mass ring (3) forms an nth-order acoustic metamaterial; the central mass block (2) is fixed on the first film (1).

2. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 1, characterized in that: The mass rings (3) are symmetrically arranged on both sides of the membrane (1), and the central mass block (2) is arranged on one side of the first membrane (1).

3. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 1, characterized in that: The thickness and / or material of the n films (1) are different.

4. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 2, characterized in that: The mass ring (3) gradually increases in height from the center to the outside.

5. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 4, characterized in that: The height of the central mass block (2) is h mass、 The mass is M mass ; The stiffness of the nth film is K n ; The natural frequency of the nth-order acoustic metamaterial is f n , where the calculation formula of the natural frequency of the first-order acoustic metamaterial is as follows, The calculation formula for the natural frequency of the nth-order acoustic metamaterial is: Where Mn is the equivalent mass of the nth film at the center, M e,n-1 is the equivalent mass of the n-1th order acoustic metamaterial.

6. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 5, characterized in that: The Young's modulus of the nth film (1) is E, the thickness is d, and the Poisson's ratio is μ. The thickness of the film is calculated based on the stiffness of the film, which conforms to the following formula:

7. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 6, characterized in that: The height of the nth mass ring (3) is h n ,, the height of the mass ring (3) is the distance between the top end and the film (1), and the height difference between adjacent mass rings (3) is Δh, ω=2πf n , where C0 is the speed of sound in air, ω is the angular frequency, when the film is square, a is the side length; when the film is circular, a is the diameter; when the film is other shapes, a is the equivalent diameter of the film, at this time the equivalent diameter a = 4A / L, A is the area of ​​the film, and L is the circumference of the film.

8. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 1, characterized in that: The material of the mass ring (3) is steel, aluminum alloy, carbon fiber, or engineering ABS plastic; The film (1) is made of stainless steel or aluminum alloy; The material of the central mass block (2) is stainless steel; The thickness of the film (1) is ≤0.2 mm; the mass ring (3) is square, circular, regular hexagonal or triangular.

9. The multi-order broadband metal film acoustic metamaterial sound insulation module according to claim 1, characterized in that: The number of mass rings (3) is three, and the number of membranes (1) is four.

10. A multi-order broadband metal film acoustic metamaterial sound insulation structure, characterized in that: It is composed of the multi-order broadband metal film acoustic metamaterial sound insulation module array described in any one of claims 1 to 9.

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