CN105173059A - Double-layer honeycomb noise reduction structure - Google Patents
Double-layer honeycomb noise reduction structure Download PDFInfo
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- CN105173059A CN105173059A CN201510493805.9A CN201510493805A CN105173059A CN 105173059 A CN105173059 A CN 105173059A CN 201510493805 A CN201510493805 A CN 201510493805A CN 105173059 A CN105173059 A CN 105173059A
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- honeycomb core
- noise reduction
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Abstract
The invention discloses a double-layer honeycomb noise reduction structure and relates to the technology of plane noise reduction structural design. The double-layer honeycomb noise reduction structure is used for noise reduction of plane cabins. An upper honeycomb core is arranged between an upper panel and a middle panel; a lower honeycomb core is arranged between the middle panel and a lower panel. Micro pores are evenly formed in the upper panel. The lower panel is installed towards the outer side of a plane body structure, and the upper panel is installed towards the inner side of the plane body structure. The double-layer honeycomb noise reduction structure is simple and convenient to manufacture, other sound absorption materials do not need to be added, the sound isolation and sound absorption functions are both achieved, and the overall noise reduction performance is excellent; the structural weight is light, the structural rigidity is good, good noise reduction performance can be obtained with low weight cost, and the double-layer honeycomb noise reduction structure is high in stability, safe and reliable.
Description
Technical field
The present invention relates to aircraft denoising structure design field, in particular to a kind of double layer cell denoising structure.
Background technology
Traditional aircraft interior trim noise-reducing design, often need add traditional sound-absorbing porous material on trim panel, or strengthen defening effect by the thickness increasing sheet material, these measures all can cause interior trim weight to increase, increase the complexity of technique, and cannot play out of my cabin and the isolation of interior noise and sorption, thus affect the traveling comfort of aircraft, reduce the work efficiency driven. simultaneouslyThe problem that present stage needs solution badly how to design a kind of apparatus structure, makes to the isolation of external fuselage noise, to absorb again to fuselage interior noise under the prerequisite not increasing sheet metal thickness and weight.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency of the prior art, provide a kind of simple and reasonable, can either isolate and improve aircraft interior trim wallboard defening effect, the double layer cell denoising structure of aircraft interior trim wallboard acoustical absorptivity can also be improved.
Object of the present invention is achieved through the following technical solutions: a kind of double layer cell denoising structure, for the noise reduction of aircraft interior trim, comprise top panel, lower faceplate, honeycomb core is provided with between top panel and lower faceplate, be connected by glued membrane between top panel with honeycomb core, between lower faceplate with honeycomb core, honeycomb core edge is provided with fills glue sealing, also comprise middle panel, honeycomb core comprises honeycomb core, lower honeycomb core, and upper honeycomb core is arranged between top panel and middle panel, lower honeycomb core is arranged between middle panel and lower faceplate.
, top panel evenly offers micropore, top panel, upper honeycomb core, middle panel form sound absorption cavity in such scheme preferably.
In above-mentioned either a program preferably, lower faceplate is installed outside housing construction, and top panel is installed inside housing construction.
In above-mentioned either a program preferably, the area of single micropore is less than the sectional area of the single cavity in honeycomb core.
The beneficial effect of double layer cell denoising structure provided by the present invention is, structure is simple, easily manufactured, without the need to other sound-absorbing materials additional, and have sound insulation and sound absorption function concurrently, overall anti-acoustic capability is excellent, this lightweight construction, good rigidity, can obtain good anti-acoustic capability with less weight cost, device stability is high, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment according to double layer cell denoising structure of the present invention;
Fig. 2 is the cross-sectional view embodiment illustrated in fig. 1 according to double layer cell denoising structure of the present invention;
Fig. 3 is the structural representation of the pugging embodiment illustrated in fig. 1 according to double layer cell denoising structure of the present invention;
Fig. 4 is the data statistics broken line graph that embodiment illustrated in fig. 1 and other denoising structures of application double layer cell denoising structure of the present invention contrast.
Reference numeral:
In 1-top panel, 2-, under panel, 3-lower faceplate, the upper honeycomb core of 4-, 5-, honeycomb core, 6-glued membrane, 7-micropore, 8-fill glue, 9-honeycomb core.
Detailed description of the invention
In order to understand the double layer cell denoising structure according to the present invention program better, be further elaborated explanation below in conjunction with the preferred embodiment of accompanying drawing to double layer cell denoising structure of the present invention.
As shown in Figure 1-Figure 3, double layer cell denoising structure provided by the invention, comprise top panel 1, lower faceplate 3, honeycomb core 9 is provided with between top panel 1 and lower faceplate 3, be connected by glued membrane 6 between top panel 1 with honeycomb core 9, between lower faceplate 3 with honeycomb core 9, honeycomb core 9 edge is provided with filling glue 8 and seals.Also comprise middle panel 2, honeycomb core 9 comprises honeycomb core 4, lower honeycomb core 5, and upper honeycomb core 4 is arranged between top panel 1 and middle panel 2, lower honeycomb core 5 is arranged between middle panel 2 and lower faceplate 3.Upper honeycomb core 4, lower honeycomb core 5 evenly offer micropore 7 on rigid foam top panel 1, and the area of single micropore is less than the sectional area of the single cavity in honeycomb core.Top panel 1, upper honeycomb core 4, middle panel 2 form sound absorption cavity.Lower faceplate 3 is installed outside housing construction, and top panel 1 is installed inside housing construction.
Double layer cell denoising structure provided by the invention is provided with filling glue 8 and is sealed at the edge of bending block 9, prevent honeycomb core 9 interior noise by the fringe radiation of honeycomb core 9 to the outside of honeycomb core 9, prevent the noise reduction work of the noise of denoising structure outside to honeycomb core 9 inside from having an impact simultaneously.During honeycomb core 9 adopts, honeycomb core 9 is partitioned into upper honeycomb core 4 and lower honeycomb core 5 by panel 2, and wherein, upper honeycomb core 4 is arranged between top panel 1 and middle panel 2, and lower honeycomb core 5 is arranged between middle panel 2 and lower faceplate 3.Honeycomb core is the one in the honeycomb of the lighter weight such as aramid paper honeycomb, aluminium honeycomb.
Top panel 1 evenly offers micropore 7, and top panel 1, upper honeycomb core 4, middle panel 2 form sound absorption cavity.Top panel 1 is evenly provided with micropore 7, and the ranks angle of micropore 7 is arranged according to demand.The area of single micropore 7 is less than the sectional area of single cavity in honeycomb core 4, this kind of mode is adopted to design micropore 7, to make the noise sound wave of fuselage interior enter in the cavity of upper honeycomb core 4 by micropore 7, cause the air vibration in the cavity of upper honeycomb core 4, air vibration makes air in cavity and cavity wall friction, sound wave energy is converted into heat energy, thus plays the effect absorbing fuselage interior noise.The sectional area that the area of single micropore 7 is less than single cavity in honeycomb core 4 is that the noise overwhelming majority making fuselage interior be passed to the cavity of honeycomb core 4 is converted to heat energy in order to prevent the noise sound wave taking in the cavity of upper honeycomb core 4 from turning back to fuselage interior due to reflection.
Middle panel 2 is solid platy structure with lower faceplate 3, noise sound wave outside fuselage acts on lower faceplate 3, because lower faceplate 3 density is comparatively large and be solid construction, the sound wave major part being mapped to its surface cannot enter into the inside of double layer cell denoising structure provided by the invention through reflection, fraction noise sound wave enters in the lower honeycomb core 5 of double layer cell denoising structure inside provided by the invention by lower faceplate 3, noise sound wave enters in the cavity of lower honeycomb core 5, cause the air vibration in cavity, rub with the cavity wall of lower honeycomb core 5, the Conversion of Energy of noise sound wave is made to be heat energy.In addition, middle panel 2 is identical with lower faceplate 3 structure, plays certain buffer action, eliminate the hidden danger that noise enters into fuselage interior to the noise in the cavity of lower honeycomb core 5.
The position that micropore 7 on top panel 1 is offered is corresponding with the position of the cavity of upper honeycomb core 4, avoids the micropore 7 on wainscot to open cavity wallboard place at upper honeycomb core 4, has an impact to the acoustically effective of upper honeycomb core 4.
Glued membrane 6 is provided with between top panel 1 and upper honeycomb core 4, between middle panel 2 and upper honeycomb core 4, between middle panel 2 and lower honeycomb core 5, between lower faceplate 3 and lower honeycomb core 5.Upper honeycomb core 4, lower honeycomb core 5 can be firmly cemented together with top panel 1, lower faceplate 3, middle panel 2 by glued membrane 6, play certain facilitation to the intensity of whole double layer cell denoising structure provided by the invention.
As shown in Figure 4, the noise reduction data broken line graph of three kinds of denoising structures in must being published picture by theory calculate and actual observed data, adopts double layer cell denoising structure of the present invention to carry out to aircraft the effect that noise reduction reaches better than all the other effects of two kinds.Known according to data in Fig. 4 is between 50HZ-10000HZ in frequency, the noise of same frequency, and the double layer cell denoising structure provided by the invention noise reduction of denoising structure that comparatively { covering+damping+adiabatic layer+15mm bending block } forms on average exceeds 5dB.
More than be described in detail in conjunction with double layer cell denoising structure specific embodiment of the present invention, but be not limitation of the present invention, everyly according to technical spirit of the present invention, technical scope of the present invention is all belonged to any simple modification made for any of the above embodiments, also it should be noted that, comprise the combination in any between each part mentioned above according to the category of double layer cell denoising structure technical scheme of the present invention.
Claims (5)
1. a double layer cell denoising structure, for the noise reduction of aircraft interior trim, comprise top panel (1), lower faceplate (3), honeycomb core (9) is provided with between described top panel (1) and described lower faceplate (3), between described top panel (1) and described honeycomb core (9), be connected by glued membrane (6) between described lower faceplate (3) with described honeycomb core (9), described honeycomb core (9) edge is provided with fills glue (8) sealing, it is characterized in that: also comprise middle panel (2), described honeycomb core (9) comprises honeycomb core (4), lower honeycomb core (5), upper honeycomb core (4) is arranged between top panel (1) and middle panel (2), lower honeycomb core (5) is arranged between middle panel (2) and lower faceplate (3).
2. double layer cell denoising structure as claimed in claim 1, it is characterized in that: described top panel (1) evenly offers micropore (7), described top panel (1), described upper honeycomb core (4), described middle panel (2) form sound absorption cavity.
3. double layer cell denoising structure as claimed in claim 1, it is characterized in that: described middle panel (2), described lower honeycomb core (5), described lower faceplate (3) form pugging, import internal body into for resisting community noise.
4. double layer cell denoising structure as claimed in claim 1, it is characterized in that: described lower faceplate (3) is installed outside housing construction, described top panel (1) is installed inside housing construction.
5. double layer cell denoising structure as claimed in claim 2, is characterized in that: the area of single described micropore (7) is less than the sectional area of the single cavity in described upper honeycomb core (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493805.9A CN105173059A (en) | 2015-08-13 | 2015-08-13 | Double-layer honeycomb noise reduction structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493805.9A CN105173059A (en) | 2015-08-13 | 2015-08-13 | Double-layer honeycomb noise reduction structure |
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| CN105173059A true CN105173059A (en) | 2015-12-23 |
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| CN201510493805.9A Pending CN105173059A (en) | 2015-08-13 | 2015-08-13 | Double-layer honeycomb noise reduction structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042469A (en) * | 2016-06-08 | 2016-10-26 | 中航复合材料有限责任公司 | Preparation method of sound-absorption honeycomb with embedded micro-perforated sound-eliminating separating plates |
| CN106863921A (en) * | 2016-12-19 | 2017-06-20 | 北京卫星制造厂 | A kind of sound absorbing-insulating structure |
| CN109592053A (en) * | 2018-11-02 | 2019-04-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of inlet structure of aircraft auxiliary power plant |
| CN110815901A (en) * | 2019-10-17 | 2020-02-21 | 成都飞机工业（集团）有限责任公司 | Method for controlling through hole rate of acoustic lining wall plate made of honeycomb sandwich composite material |
| CN111792044A (en) * | 2019-04-02 | 2020-10-20 | 空中客车运营简化股份公司 | Assembly for forming sound absorbing material |
| CN112208743A (en) * | 2019-07-09 | 2021-01-12 | 中国航发商用航空发动机有限责任公司 | Component end structure, method for producing same, aircraft and aircraft component |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475624A (en) * | 1981-07-27 | 1984-10-09 | Ltv Aerospace And Defense Company | Honeycomb structure |
| US4541879A (en) * | 1982-07-15 | 1985-09-17 | Rohr Industries, Inc. | Method of manufacture of noise suppression panel |
| US4594120A (en) * | 1981-07-27 | 1986-06-10 | Ltv Aerospace And Defense Company | Method for installing a septum in honeycomb core |
| US5041323A (en) * | 1989-10-26 | 1991-08-20 | Rohr Industries, Inc. | Honeycomb noise attenuation structure |
| US5460865A (en) * | 1993-05-13 | 1995-10-24 | Ciba-Geigy Corporation | Hybrid honeycomb sandwich panel |
| CN1141866A (en) * | 1995-06-08 | 1997-02-05 | 国家宇航公司 | Method for production of plate with structural and acoustical characteristics and plate thereof |
| CN102385856A (en) * | 2010-08-13 | 2012-03-21 | 罗尔股份有限公司 | System and method for noise suppression |
| CN102858629A (en) * | 2010-04-20 | 2013-01-02 | 空中客车德国运营有限责任公司 | Panel absorber |
| CN103827958A (en) * | 2011-09-21 | 2014-05-28 | 埃尔塞乐公司 | Intermediate acoustic skin and the implementation thereof |
| CN104185546A (en) * | 2011-12-30 | 2014-12-03 | 奥格斯塔韦斯兰股份公司 | Aircraft interior trim panel, and aircraft fitted with such panels |
-
2015
- 2015-08-13 CN CN201510493805.9A patent/CN105173059A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475624A (en) * | 1981-07-27 | 1984-10-09 | Ltv Aerospace And Defense Company | Honeycomb structure |
| US4594120A (en) * | 1981-07-27 | 1986-06-10 | Ltv Aerospace And Defense Company | Method for installing a septum in honeycomb core |
| US4541879A (en) * | 1982-07-15 | 1985-09-17 | Rohr Industries, Inc. | Method of manufacture of noise suppression panel |
| US5041323A (en) * | 1989-10-26 | 1991-08-20 | Rohr Industries, Inc. | Honeycomb noise attenuation structure |
| US5460865A (en) * | 1993-05-13 | 1995-10-24 | Ciba-Geigy Corporation | Hybrid honeycomb sandwich panel |
| CN1141866A (en) * | 1995-06-08 | 1997-02-05 | 国家宇航公司 | Method for production of plate with structural and acoustical characteristics and plate thereof |
| CN102858629A (en) * | 2010-04-20 | 2013-01-02 | 空中客车德国运营有限责任公司 | Panel absorber |
| CN102385856A (en) * | 2010-08-13 | 2012-03-21 | 罗尔股份有限公司 | System and method for noise suppression |
| CN103827958A (en) * | 2011-09-21 | 2014-05-28 | 埃尔塞乐公司 | Intermediate acoustic skin and the implementation thereof |
| CN104185546A (en) * | 2011-12-30 | 2014-12-03 | 奥格斯塔韦斯兰股份公司 | Aircraft interior trim panel, and aircraft fitted with such panels |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042469A (en) * | 2016-06-08 | 2016-10-26 | 中航复合材料有限责任公司 | Preparation method of sound-absorption honeycomb with embedded micro-perforated sound-eliminating separating plates |
| CN106863921A (en) * | 2016-12-19 | 2017-06-20 | 北京卫星制造厂 | A kind of sound absorbing-insulating structure |
| CN106863921B (en) * | 2016-12-19 | 2019-05-24 | 北京卫星制造厂 | A kind of sound absorbing-insulating structure |
| CN109592053A (en) * | 2018-11-02 | 2019-04-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of inlet structure of aircraft auxiliary power plant |
| CN111792044A (en) * | 2019-04-02 | 2020-10-20 | 空中客车运营简化股份公司 | Assembly for forming sound absorbing material |
| CN111792044B (en) * | 2019-04-02 | 2024-06-28 | 空中客车运营简化股份公司 | Assembly for forming sound absorbing material |
| CN112208743A (en) * | 2019-07-09 | 2021-01-12 | 中国航发商用航空发动机有限责任公司 | Component end structure, method for producing same, aircraft and aircraft component |
| CN110815901A (en) * | 2019-10-17 | 2020-02-21 | 成都飞机工业（集团）有限责任公司 | Method for controlling through hole rate of acoustic lining wall plate made of honeycomb sandwich composite material |
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Application publication date: 20151223 |