CN114898731A - Double-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration - Google Patents
Double-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration Download PDFInfo
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- 238000000926 separation method Methods 0.000 claims abstract description 45
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- G—PHYSICS
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Abstract
The invention discloses a double-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration. The surface layer is a uniform solid covering plate; the separation layer is adjacent to the surface layer and the resonance layer and is formed into a grid by alternating cubes and cuboids; the resonance layer is formed by arranging spiral holes consisting of a plurality of concentric Archimedes spiral lines on the thin plate to form a local resonance unit, and the resonance frequency of the first resonance layer is different from that of the second resonance layer; the connecting layer is connected with the first resonance layer and the second resonance layer, and squares are formed by alternating cubes and cuboids. According to the invention, the double-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration can be quickly constructed according to the size and shape requirements of a specific space, vibration reduction and heat insulation of different degrees can be realized according to the requirements, the operation is convenient and easy to realize, and the engineering practicability is strong.
Description
Technical Field
The invention relates to the field of metamaterial design. In particular to a double-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration.
Background
The tail nozzle of the hypersonic aircraft is an important part of the hypersonic aircraft integration, is an important part for embodying the coupling of a pneumatic/propulsion system, and is an important pneumatic profile, and the flight quality of the whole aircraft is influenced by the performance of the tail nozzle. Jet noise of scramjet engine comprises mixed jet noise and shock wave broadband noise, and sound pressure level can reach 150-160 dB, jet flow noise can cause annular acoustic liner cracking, acoustic vibration fatigue damage and the like of the exhaust duct, so that how to reduce vibration and noise of the tail nozzle is important. For a hypersonic aircraft, the speed can reach more than 5 Mach number, and the structural performance of the material is greatly reduced in a high-temperature environment along with the generation of high heat flow. The jet of the scramjet engine can generate 10 degrees of jet at the tail nozzle 6 W/m 2 The high heat flow, the temperature can even reach more than 3000K, the high temperature environment greatly reduces the structural performance of the material, and the material and the structural performance of the aircraft are greatly influenced. Therefore, how to achieve thermal control at the jet nozzle is of great importance.
The mechanical metamaterial is a new branch in the research field of artificial metamaterial, is made of traditional materials, and can realize novel unconventional mechanical/mechanical properties. Research shows that the metamaterial composed of periodically distributed unit cells with special microstructures is a typical dispersive medium, the frequency range of the energy band diagram without an eigen wave dispersion curve is called a band gap, and elastic waves or sound waves in the band gap cannot be transmitted in the medium, so that the metamaterial can be used for efficient vibration and noise isolation. The position and width of the band gap and the wave propagation inhibition capability of the band gap can be adjusted and controlled by adjusting the geometric/material parameters of the artificial periodic structure.
At present, many patents of acoustic metamaterials are applied to vibration control, but the resonance frequency band for vibration reduction and noise reduction of the acoustic metamaterials is often greatly related to the density or modulus of materials and the application temperature range, and the acoustic metamaterials cannot be generally applied to high-temperature environments. However, the physical field of the hypersonic aircraft tail nozzle is very complex, and due to the light weight and the limitation of installation space, the metamaterial is often required to be capable of reducing vibration and noise and insulating heat at the same time, and meanwhile, the metamaterial is not too large in size and light in weight.
Comprehensive analysis shows that in the aspect of realizing vibration reduction and heat insulation integration in a limited space, the vibration reduction and noise reduction characteristics of the conventional acoustic metamaterial in a high-temperature environment are greatly influenced, and in addition, the high-temperature environment has great threat to the safety and performance of the structure. Therefore, the design of the dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration is particularly important. In addition, with the development of an additive manufacturing technology, the manufacturing of the vibration-damping and heat-insulating integrated double-resonance layered metamaterial can be realized.
Disclosure of Invention
In order to solve the technical problems, the invention provides a dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration. In order to ensure the stability and effectiveness of the structure in the vibration reduction and heat insulation process, each layer of the invention is carefully designed to obtain a topological structure which meets the integration requirement;
the technical means adopted by the invention are as follows:
the utility model provides a can realize thermal-insulated integrated two resonance layering metamaterials of damping, includes first top layer, first separation layer, first resonance layer, articulamentum, second resonance layer, second separation layer, second top layer. To achieve the damping and insulating effect, each set of layers has its specific material properties, thickness and unit cell design/topology.
The first surface layer, the first separation layer, the first resonance layer, the connection layer, the second resonance layer, the second separation layer and the second surface layer are sequentially connected.
The first surface layer and the second surface layer are uniform solid covering plates, and high-temperature-resistant materials are adopted for supporting the stacking of all the layers and protecting the structure.
The first separation layer and the second separation layer are formed into grids by a plurality of cubes and cuboids alternately.
The first resonance layer and the second resonance layer are arranged on the thin plate by a plurality of spiral holes formed by concentric Archimedes spiral lines to form a local resonance unit;
the connecting layer connect first resonance layer and second resonance layer, alternate constitution square by a plurality of cubes and cuboid, the cube is located the centre on square limit.
The height that highly is greater than the cuboid of the square in first separation layer, the second separation layer for realize thermal separation and for the resonance layer provides sufficient vibration space, the load that the top layer received transmits the resonance layer through the square.
The cube in the separation layer is located four summits in the rectangle region, and the cuboid is located between two cubes.
The first resonance layer and the second resonance layer are different in configuration design, so that waves with different resonance frequencies are filtered, the stress level of a surface layer structure is reduced, and acoustic fatigue is prevented.
The first resonance layer and the second resonance layer are holes formed by four concentric Archimedes spiral holes arranged on a thin plate.
The four concentric spiral holes mutually form a 90-degree rotation angle.
The expression mode of the polar coordinates of the Archimedes spiral is as follows:
wherein R is the inner diameter, R is the outer diameter, n is the number of turns, and s is (0, 1).
The difference in resonant frequencies of the first resonant layer and the second resonant layer is controlled by R, and n.
The connecting layer must be stacked between the first resonance layer and the second resonance layer, and the existence of the connecting layer in the dual-resonance layered metamaterial is the key for realizing the coupling resonance effect of the two resonance layers.
The connecting layer is made of softer materials such as linear elastic materials, elastic plastic materials or super elastic materials.
The first separation layer, the second separation layer and the connection layer are consistent in forming unit, but the distribution positions of the cubes are different, and the cubes of the first separation layer and the second separation layer are respectively located at the top point and the middle point of the edge of the square, so that the staggered transmission of heat in the vertical direction is realized.
The gaps between the layers are not limited to filling with damping material or not.
The metamaterial for the local resonance units with different resonance layers and different sizes can be quickly constructed according to the size and shape requirements of a specific vibration-damping heat-insulating space, the metamaterial is convenient to operate and easy to manufacture, and is flexible and adjustable in the thickness direction of each layer, and the engineering practicability is high.
The vibration reduction and heat insulation integration of the invention is as follows: by installing the double-resonance metamaterial at a position needing to bear high-temperature and high-sound-pressure, when the surface layer of the metamaterial is excited at the same time by high temperature and high noise, the separation layer and the connecting layer isolate heat, and simultaneously drive the resonance layer to vibrate, so that the absorption and capture of noise are realized, and the integration of vibration attenuation and heat insulation is realized;
due to the adoption of the technical scheme, the invention has the following advantages:
1) the invention can realize vibration isolation under the condition of smaller overall thickness;
2) the invention can realize heat insulation under the condition of smaller overall thickness;
3) the structure of each layer is simple, the resonance layer is a plane perforated plate and can adopt various cutting manufacturing processes, the separation layer and the connecting layer can be milled and easily manufactured in large batch by mature technology, and the development of the additive manufacturing technology enables each layer to be easily manufactured. Based on the reasons, the invention can be widely popularized in the fields of metamaterial design and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a square unit cell of a dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration in an embodiment of the invention.
Fig. 2 is a schematic surface layer diagram of a dual-resonance layered metamaterial capable of achieving vibration reduction and heat insulation integration in an embodiment of the invention.
Fig. 3 is a schematic diagram of a separation layer of a dual-resonance layered metamaterial capable of achieving vibration reduction and heat insulation integration in an embodiment of the invention.
FIG. 4 is a schematic diagram of a first resonant layer of a dual-resonant layered metamaterial capable of achieving vibration reduction and heat insulation integration according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a connection layer of a dual-resonance layered metamaterial capable of achieving vibration reduction and heat insulation integration in an embodiment of the invention.
FIG. 6 is a schematic diagram of a second resonant layer of a dual-resonant layered metamaterial capable of achieving vibration reduction and heat insulation integration according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of a square unit cell array of a dual-resonant layered metamaterial capable of achieving vibration damping and heat insulation integration according to an embodiment of the present invention.
Fig. 8 is a comparison result of the sound insulation effect of the design model according to the embodiment of the present invention and a solid square plate with the same volume.
FIG. 9 shows the comparison of the thermal insulation effect of the design model with the solid square plate of the same volume in the embodiment of the present invention.
In the figure: 1 a first skin layer; 2 a first separation layer; 3 a first resonance layer; 4 a tie layer; 5 a second resonance layer; 6 a second separation layer; 7 a second skin layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
As shown in FIG. 1, the double-resonance layered metamaterial capable of achieving vibration reduction and heat insulation integration comprises surface layers 1 and 7, separation layers 2 and 6, a first resonance layer 3, a connecting layer 4 and a second resonance layer 5.
As shown in fig. 2, the surface layer is a uniform plate, and should be made of high temperature resistant material.
As shown in fig. 3, the separation layer is formed by alternating cubes and cuboids into squares, the separation layer is in contact with the surface layer and the resonance layer through the cubes, the side length of each square is L, the side length of each cube is w, the thickness of each cube is h1, and the separation layer is located at 4 vertexes of each square; the width of the cuboid is b, the length of the cuboid is L-2w, the thickness of the cuboid is h2(h2 is less than h1), and the cuboid is positioned in the middle of 2 cubes; the cubes forming the grids are flush with the central line of the cuboid;
the sizes of the side length w, the thickness h1, the width b and the thickness h1 of the square are flexibly adjusted according to the target.
The separating layer is made of a high-temperature-resistant and relatively hard material;
as shown in fig. 4 and fig. 6, the first resonance layer and the second resonance layer are formed by applying a group of hole topologies consisting of four concentric archimedes spiral holes to each substrate plate, the four concentric spiral holes are mutually at a 90 ° rotation angle, and the resonance units of each adjacent group of spiral holes are arranged in an array manner, so as to construct the spiral local resonance acoustic metamaterial; the expression mode of the polar coordinates of the Archimedes spiral is as follows:
wherein R is the inner diameter, R is the outer diameter, n is the number of turns, s is epsilon (0,1), and the difference of the resonant frequencies is controlled by R, R and n.
As shown in fig. 5, the connection layer is formed by alternating cubes and cuboids to form a grid, and the first resonance layer and the second resonance layer are in contact through the cubes; the side length of the square is L, the side length of the cube is w, the thickness of the cube is h1, and the cube is located in the middle of each side of the square; the width of the cuboid is b, the length of the cuboid is (L-w)/2, the thickness of the cuboid is h2(h2 is more than h1), and the cuboid is positioned on two sides of the cuboid; the cubes forming the grids are flush with the central line of the cuboid;
the sizes of the side length w, the thickness h1, the width b and the thickness h1 of the square are flexibly adjusted according to the target.
The connecting layer is made of softer materials such as linear elastic materials, elastic plastic materials or super elastic materials.
The unit cell sizes L of the layers are required to be consistent.
The thickness of each layer is flexibly adjusted according to a target;
the gaps between the layers are not limited to filling with damping material or not.
Fig. 8 shows the result of comparing the sound insulation effect of the design model with that of a solid rectangular plate with the same volume in the embodiment of the invention. The material of both is high temperature resistant ceramic material (zirconia). The thickness of each layer of the design model is as follows: 1mm of surface layer, separation layer 2mm, first resonance layer 1mm, tie layer 2mm, second resonance layer 1mm, separation layer 2mm, 1mm of surface layer, gross thickness 10 mm. The unit cell size L of each layer is 40mm, w is 2mm, h2 is 0.5 h1 is 1 mm. The archimedes spiral R of the first resonance layer is 10mm, R is 20mm, n is 0.5, w 1 ＝0.9mm，w 0 3.9 mm. The Archimedes spiral R of the second resonance layer is 5mm, R is 20mm, n is 1, w 1 ＝0.9mm，w 0 2.6 mm. The incident sound pressure for both models was 1 Pa. The comparison result shows that: the peak value of the sound insulation quantity of the designed model is 25dB at 460Hz, the peak value of the sound insulation quantity of the designed model is 24dB at 950Hz, and the whole sound insulation quantity of the solid square plate model is lower than that of the designed model, so that the designed model has excellent sound insulation effect.
FIG. 9 shows the result of comparing the thermal insulation effect of the design model with that of a solid rectangular plate of the same volume in the embodiment of the present invention. The material of both is high temperature resistant ceramic material (zirconia). The outer surface temperature of both models was 1200 degrees celsius. The comparison result shows that: the peak temperature of the inner surface of the designed model is 180.10 ℃ at 1000 seconds, and the inner surface of the solid square plate model breaks through 800 ℃ at about 7 seconds, so that the designed model has excellent heat insulation effect.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a can realize thermal-insulated integrated two resonance layering metamaterials of damping which characterized in that: comprises a first surface layer (1), a first separation layer (2), a first resonance layer (3), a connecting layer (4), a second resonance layer (5), a second separation layer (6) and a second surface layer (7);
the first surface layer (1), the first separation layer (2), the first resonance layer (3), the connecting layer (4), the second resonance layer (5), the second separation layer (6) and the second surface layer (7) are sequentially connected;
the first surface layer (1) and the second surface layer (7) are uniform solid covering plates, and high-temperature-resistant materials are adopted for supporting the stacking of all groups of layers and protecting the structure;
the first separation layer (2) and the second separation layer (6) are formed into grids by a plurality of cubes and cuboids at intervals;
the first resonance layer (3) and the second resonance layer (5) are formed by arranging spiral holes consisting of a plurality of concentric Archimedes spiral lines on a thin plate to form a local resonance unit;
the connecting layer (4) is connected with the first resonance layer (3) and the second resonance layer (5), and a square is formed by a plurality of cubes and cuboids at intervals, and the cubes are positioned in the middle of the edges of the square;
the height that highly is greater than the cuboid of the square in first separation layer (2), the second separation layer (6) for realize thermal separation and for the resonance layer provides sufficient vibration space, the load that the top layer received transmits the resonance layer through the square.
2. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1, wherein: the cube in first separation layer (2) and second separation layer (6) be located four summits in the rectangle region, the cuboid is located between two cubes.
3. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1 or 2, wherein: the first resonance layer (3) and the second resonance layer (5) are different in configuration design, so that waves with different resonance frequencies can be filtered, the stress level of a surface layer structure is reduced, acoustic fatigue is prevented, and the resonance frequencies are controlled through R, R and n.
4. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1 or 2, wherein: the first resonance layer (3) and the second resonance layer (5) are holes formed by four concentric Archimedes spiral holes arranged on a thin plate.
5. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 4, wherein: the four concentric Archimedes spiral holes mutually form a 90-degree rotation angle.
6. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1 or 2, wherein: the expression mode of the polar coordinates of the Archimedes spiral is as follows:
wherein R is the inner diameter, R is the outer diameter, n is the number of turns, and s is (0, 1).
7. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1 or 2, wherein: the connecting layer (4) is formed by alternating cubes and cuboids into a square, and the cubes are positioned in the middle of the edges of the square.
8. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1 or 2, wherein: the components of the first separation layer (2), the second separation layer (6) and the connecting layer (4) are consistent, but the distribution positions of the cubes are different, and the cubes of the first separation layer (2) and the second separation layer (6) are respectively located at the top points of the squares and the middle points of the edges of the squares, so that the staggered transmission of heat in the vertical direction is realized.
9. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 6, wherein: the components of the first separation layer (2), the second separation layer (6) and the connecting layer (4) are consistent, but the distribution positions of the cubes are different, and the cubes of the first separation layer (2) and the second separation layer (6) are respectively located at the top points of the squares and the middle points of the edges of the squares, so that the staggered transmission of heat in the vertical direction is realized.
10. The dual-resonance layered metamaterial capable of realizing vibration reduction and heat insulation integration according to claim 1 or 2, wherein: and damping materials are filled in gaps among the layers of the double-resonance layered metamaterial.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106899A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院声学研究所 | Multi-functional layered composite materials for high-speed train |
| CN108847211A (en) * | 2018-05-18 | 2018-11-20 | 上海超颖声学科技有限公司 | A kind of acoustic construction and its design method |
| CN108885863A (en) * | 2016-02-05 | 2018-11-23 | 勃艮第大学 | For absorbing or radiating the small thickness perforation multilayer fabric acoustic resonator of low-down frequency of sound wave |
| CN209433855U (en) * | 2018-10-24 | 2019-09-24 | 上海超颖声学科技有限公司 | Acoustic construction and sound system |
| CN212979455U (en) * | 2020-05-29 | 2021-04-16 | 武平县方成幕墙装饰有限公司 | Effectual plastic-aluminum board keeps warm |
| CN112992113A (en) * | 2021-03-05 | 2021-06-18 | 西北工业大学 | Light and thin composite sound insulation structure based on acoustic super-surface and sound insulation method |
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- 2022-04-13 CN CN202210384642.0A patent/CN114898731A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106899A (en) * | 2011-11-11 | 2013-05-15 | 中国科学院声学研究所 | Multi-functional layered composite materials for high-speed train |
| CN108885863A (en) * | 2016-02-05 | 2018-11-23 | 勃艮第大学 | For absorbing or radiating the small thickness perforation multilayer fabric acoustic resonator of low-down frequency of sound wave |
| CN108847211A (en) * | 2018-05-18 | 2018-11-20 | 上海超颖声学科技有限公司 | A kind of acoustic construction and its design method |
| CN209433855U (en) * | 2018-10-24 | 2019-09-24 | 上海超颖声学科技有限公司 | Acoustic construction and sound system |
| CN212979455U (en) * | 2020-05-29 | 2021-04-16 | 武平县方成幕墙装饰有限公司 | Effectual plastic-aluminum board keeps warm |
| CN112992113A (en) * | 2021-03-05 | 2021-06-18 | 西北工业大学 | Light and thin composite sound insulation structure based on acoustic super-surface and sound insulation method |
Non-Patent Citations (1)
| Title |
|---|
| XIANGYU TIAN, WENJIONG CHEN, RENJING GAO: "Merging Bragg and Local Resonance Bandgaps in Perforated Elastic Metamaterials with Embedded Spiral Holes", JOURNAL OF SOUND AND VIBRATION, vol. 500, no. 1, 31 December 2021 (2021-12-31), pages 1 - 10 * |
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