CN110487533A - A kind of sound lining testpieces, assemble method and its test structure - Google Patents
A kind of sound lining testpieces, assemble method and its test structure Download PDFInfo
- Publication number
- CN110487533A CN110487533A CN201910874664.3A CN201910874664A CN110487533A CN 110487533 A CN110487533 A CN 110487533A CN 201910874664 A CN201910874664 A CN 201910874664A CN 110487533 A CN110487533 A CN 110487533A
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- Prior art keywords
- sound
- casing
- annular
- testpieces
- contrast
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Abstract
The application belongs to sound lining experimental design field, and in particular to a kind of sound lining testpieces, comprising: sound serves as a contrast casing；Annular honeycomb core, is manufactured by composite material, and outside is connect with the inner surface of sound lining casing；Annular acoustical panel, is manufactured by composite material, the interior side bonds of outer surface and honeycomb core.In addition, be related to a kind of assemble method of sound lining testpieces, realizing the assembling of above-mentioned sound lining testpieces, and it is related to a kind of test structure with above-mentioned sound lining testpieces.
Description
Technical field
The application belongs to sound lining experimental design field, and in particular to a kind of sound lining testpieces, assemble method and its test work
Dress.
Background technique
It is served as a contrast to reduce the noise of the engine laying sound mostly in its casing, sound lining includes backboard, honeycomb core, noise reduction more
Plate, wherein there are multiple bloops, honeycomb core forms multiple helmholtz resonance chambers in parallel with acoustical panel, will on acoustical panel
Sound can be converted into kinetic energy, dissipate to sound wave, reach noise reduction effect.
Sound lining to meet aircraft loss of weight and otherwise demand is manufactured by composite material is just gradually replacing by metal material
The sound lining of material manufacture, this kind of sound lining mostly use it is split type, in order to be dismounted in engine crankcase.
Anti-acoustic capability for verifying composite material sound lining and the design for sound lining improve and provide effective support, need to be to adding
Work sound serve as a contrast testpieces, by the sound lining testpieces be assembled to test fixture carry out experimental test, currently associated technical solution exist with
Lower defect:
1), sound lining testpieces is assembled in sound lining casing by split type sound lining and is formed, and assembling process is cumbersome, influences test effect
Rate；
2) it, being served as a contrast for the split type sound of certain size, the process equipment that need to specially design corresponding size processes it,
Carry out the lining test of various sizes of sound, need the process equipment for respectively designing corresponding size to various sizes of split type sound serve as a contrast into
Row processing, process equipment utilization rate are lower；
3), test fixture includes engine and air inlet pipe, when testing sound lining testpieces, by sound lining testpieces assembling
To the test fixture, dock one end of sound lining testpieces with engine intake, the other end is docked with the outlet of air inlet pipe, if into
The various sizes of sound of row serves as a contrast testpieces, need to correspond to the engine and air inlet pipe of replacement corresponding size, serves as a contrast testpieces with sound to meet
Docking demand, test fixture utilization rate is low.
The application is proposed in view of the drawbacks described above of the prior art.
Summary of the invention
The purpose of the application is to provide a kind of sound lining testpieces, assemble method and its test fixture, in overcoming or alleviated by
The defect of prior art at least one aspect.
The technical solution of the application is:
On the one hand a kind of sound lining testpieces is provided, comprising:
Sound serves as a contrast casing；
Annular honeycomb core, is manufactured by composite material, and outside is connect with the inner surface of sound lining casing；
Annular acoustical panel, is manufactured by composite material, the interior side bonds of outer surface and honeycomb core.
According at least one embodiment of the application, the outer wall at sound lining casing both ends all has installation side；
The outer wall of annular noise reduction board ends has connection side, and the connection side at the annular every end of acoustical panel extends to sound lining casing pair
The outside on the installation side that should be held, and it is Nian Jie with the installation side at the end.
According at least one embodiment of the application, annular acoustical panel is radially divided into two sections, annular acoustical panel
It is docked by this two sections along axial direction.
According at least one embodiment of the application, the docking site bonding of annular acoustical panel and/or riveting.
According at least one embodiment of the application, further includes:
Annular glass fibre transition zone, outer surface and sound the lining inner surface of casing are Nian Jie, inner surface and honeycomb core
Outer surface bonding.
According at least one embodiment of the application, the inner surface that sound serves as a contrast casing has thread groove.
On the other hand a kind of assemble method of sound lining testpieces is provided, comprising the following steps:
Step 1: annular glass fibre transition zone outer surface is Nian Jie with sound lining casing inner surface；
Step 2: annular glass fibre transition zone inner surface and the outer side bonds of annular honeycomb core；
Step 3: annular acoustical panel outer surface is Nian Jie with annular honeycomb core, the connection side at both ends is corresponding with sound lining casing
The installation side at end is bonded；
Step 4: the both ends docking of annular acoustical panel.
Another further aspect provides a kind of sound lining experimental test structure, comprising:
Engine；
First docking casing, one end are docked with motor inlet；
Any above-mentioned sound serves as a contrast testpieces, and the other end that casing is docked with first in one end of sound lining casing docks；
Second docking casing, one end are docked with the other end of sound lining casing；
Air inlet pipe, the other end that casing is docked with second in outlet end dock.
According at least one embodiment of the application, first takes docking casing has with the outer wall that sound lining casing docks one end
First butt joint edge, the first butt joint edge are connect with the installation side that sound lining casing is located at the end；
The outer wall that second docking casing sound lining casing docks one end has the second butt joint edge, and the second butt joint edge and sound serve as a contrast casing
Installation side positioned at the end connects.
According at least one embodiment of the application, the first docking casing outer wall has a plurality of first reinforcing rib；
Second docking casing outer wall has a plurality of second reinforcing rib.
Detailed description of the invention
Fig. 1 is sound lining testpieces structural schematic diagram provided by the embodiments of the present application；
Fig. 2 is the assembling schematic diagram of sound lining testpieces provided by the embodiments of the present application；
Fig. 3 is the assembling schematic diagram of sound lining testpieces provided by the embodiments of the present application；
Fig. 4 is the schematic diagram of sound lining experimental test structure provided by the embodiments of the present application；
Fig. 5 is the partial sectional view of Fig. 4；
Fig. 6 is the assembling schematic diagram of sound lining experimental test structure provided by the embodiments of the present application；
Wherein:
1- sound serves as a contrast casing；2- annular honeycomb core；3- annular acoustical panel.4- annular glass fibre transition zone；5- engine；6-
First docking casing；7- second docks casing；8- air inlet pipe.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related application, rather than the restriction to this application.It also should be noted that in order to
Convenient for description, part relevant to the application is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that in the description of the present application, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion device or element must have a particular orientation, with specific orientation
Construction and operation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ", " third " are only used for retouching
Purpose is stated, relative importance is not understood to indicate or imply.
In addition it is also necessary to explanation, in the description of the present application unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the application.
1 to Fig. 6 the application is described in further details with reference to the accompanying drawing.
On the one hand a kind of sound lining testpieces is provided, comprising:
Sound serves as a contrast casing 1；
Annular honeycomb core 2, is manufactured by composite material, and outside is connect with the inner surface of sound lining casing 1；
Annular acoustical panel 3, is manufactured by composite material, the interior side bonds of outer surface and honeycomb core 2.
Testpieces is served as a contrast for sound disclosed in above-described embodiment, is tried it will be appreciated by persons skilled in the art that it serves as a contrast sound
Test the honeycomb core of part, acoustical panel is designed as annular, on the one hand it is easy to process, assembling, on the other hand its sound serve as a contrast testpieces internal diameter
In the case where certain, the sound lining testpieces of different-thickness can be completed to process by a set of process equipment, mentioned to a certain extent
The utilization rate of high process equipment.
In some alternative embodiments, annular honeycomb core 2, annular acoustical panel 3 are by epoxy resin-matrix aramid fiber material
Manufacture.
In some alternative embodiments, the outer wall at sound lining 1 both ends of casing all has installation side；
The outer wall at annular 3 both ends of acoustical panel has connection side, and the connection side at the every end of annular acoustical panel 3 extends to sound lining casing
The outside on the installation side of 1 corresponding end, and it is Nian Jie with the installation side at the end.
Testpieces is served as a contrast for sound disclosed in above-described embodiment, it will be appreciated by persons skilled in the art that design sound serves as a contrast machine
The outer wall at 1 both ends of casket all has installation side, on the one hand can be convenient for the connection of sound lining casing 1 and engine 5, air inlet pipe 8, another party
Face can be Nian Jie with the connection side docking of annular 3 both ends outer wall of acoustical panel, is tightly combined between so that sound is served as a contrast testpieces all parts.
In some alternative embodiments, annular acoustical panel 3 is radially divided into two sections, and annular acoustical panel 3 is by this
Two sections dock along axial direction, assembly, assembling in order to sound lining testpieces.
In some alternative embodiments, the docking site bonding and/or riveting of annular acoustical panel 3.
In some alternative embodiments, further includes:
Annular glass fibre transition zone 4, outer surface is Nian Jie with the sound lining inner surface of casing 1, inner surface and honeycomb core 2
Outer surface bonding.
Testpieces is served as a contrast for sound disclosed in above-described embodiment, it will be appreciated by persons skilled in the art that due to glass fibers
Dimension and metal and it is nonmetallic have good cementability, served as a contrast in sound and annular glass fibre be set between casing 1 and annular honeycomb core 2
Transition zone 4 is bonded, and can effectively improve the adhesive strength between sound lining casing 1 and annular honeycomb core 2.
In some alternative embodiments, the inner surface of sound lining casing 1 has thread groove, so that sound lining casing 1 and annular
More glue can be filled and maintained between glass fibre transition zone 4, with enhancing sound lining casing 1 and annular glass fibre mistake
Cross the adhesive effect between layer 4.
On the other hand a kind of assemble method of sound lining testpieces is provided, comprising the following steps:
Step 1: 4 outer surface of annular glass fibre transition zone is Nian Jie with sound lining 1 inner surface of casing；
Step 2: 4 inner surface of annular glass fibre transition zone and the outer side bonds of annular honeycomb core 2；
Step 3: annular 4 outer surface of acoustical panel is Nian Jie with annular honeycomb core 2, the connection side at both ends and sound lining casing 1 are right
The installation side bonding that should be held；
Step 4: the both ends docking of annular acoustical panel.
For assemble method disclosed in above-described embodiment, it will be appreciated by persons skilled in the art that it is to realize pair
The assembling of above-mentioned sound lining testpieces.
Another further aspect provides a kind of sound lining experimental test structure, comprising:
Engine 5；
First docking casing 6, one end is docked with motor inlet；
Any above-mentioned sound serves as a contrast testpieces, and the other end that casing 6 is docked with first in one end of sound lining casing 1 docks；
Second docking casing 7, one end are docked with the other end of sound lining casing 1；
Air inlet pipe 8, the other end that casing 7 is docked with second in outlet end dock.
Experimental test structure is served as a contrast for sound disclosed in above-described embodiment, it will be appreciated by persons skilled in the art that it sets
It sets sound lining testpieces and docks the docking of casing 6 and setting sound lining testpieces and air inlet pipe 8 by first with the import of engine 5
Outlet by second docking casing 7 dock, can sound serve as a contrast testpieces internal diameter it is certain in the case where, can by first dock
Casing 6, second docks 7 size of casing and is designed the sound lining testpieces of realization stack pile and import, the air inlet pipe 8 of engine 5
The docking of outlet improve engine, air inlet pipe to a certain extent without replacing various sizes of engine, air inlet pipe
Utilization rate, that is, raising sound lining testpieces test fixture utilization rate.
In some alternative embodiments, the first docking casing 6 has first pair with the outer wall that sound lining casing 1 docks one end
Edge fit, the first butt joint edge are connect with the installation side that sound lining casing 1 is located at the end；
The outer wall that second docking 7 sound of casing lining casing 1 docks one end has the second butt joint edge, and the second butt joint edge and sound serve as a contrast machine
Casket 1 is located at the installation side connection at the end.
Experimental test structure is served as a contrast for sound disclosed in above-described embodiment, it will be appreciated by persons skilled in the art that sound serves as a contrast
Corresponding the first butt joint edge on the first docking machine casing 6 in the installation side at 1 both ends of casing, second dock second pair on casing 7
Edge fit connection, which, which can be, is bolted, with can be by the connection at therebetween 3 both ends of annular acoustical panel
Side clamps, so that sound lining casing 1 be made to be connected firmly with annular acoustical panel 3.
In some alternative embodiments, the first docking 6 outer wall of casing has a plurality of first reinforcing rib；
Second docking 7 outer wall of casing has a plurality of second reinforcing rib.
So far, it has been combined preferred embodiment shown in the drawings and describes the technical solution of the application, still, this field
Technical staff is it is easily understood that the protection scope of the application is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of application, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement is fallen within the protection scope of the application.
Claims (10)
1. a kind of sound serves as a contrast testpieces characterized by comprising
Sound serves as a contrast casing (1)；
Annular honeycomb core (2), is manufactured by composite material, and outside is connect with the inner surface of sound lining casing (1)；
Annular acoustical panel (3), is manufactured by composite material, the interior side bonds of outer surface and the honeycomb core (2).
2. sound according to claim 1 serves as a contrast testpieces, which is characterized in that
The outer wall at sound lining casing (1) both ends all has installation side；
The outer wall at described annular acoustical panel (3) both ends has connection side, and the connection side at described annular acoustical panel (3) every end extends to
The outside on the installation side of described sound lining casing (1) corresponding end, and it is Nian Jie with the installation side at the end.
3. sound according to claim 2 serves as a contrast testpieces, which is characterized in that
The annular acoustical panel (3) is radially divided into two sections, and the annular acoustical panel (3) is by this two sections along axial docking
It forms.
4. sound according to claim 3 serves as a contrast testpieces, which is characterized in that
The docking site bonding of the annular acoustical panel (3) and/or riveting.
5. sound according to claim 1 serves as a contrast testpieces, which is characterized in that
Further include:
Annular glass fibre transition zone (4), outer surface is Nian Jie with the sound lining inner surface of casing (1), inner surface and institute
State the outer surface bonding of honeycomb core (2).
6. sound according to claim 5 serves as a contrast testpieces, which is characterized in that
The inner surface of sound lining casing (1) has thread groove.
7. a kind of assemble method of sound lining testpieces, which comprises the following steps:
Step 1: annular glass fibre transition zone (4) outer surface is Nian Jie with sound lining casing (1) inner surface；
Step 2: annular glass fibre transition zone (4) inner surface and annular honeycomb core (2) outer side bonds；
Step 3: annular acoustical panel (4) outer surface is Nian Jie with annular honeycomb core (2), the connection side at both ends and sound lining casing (1)
The installation side of corresponding end is bonded；
Step 4: the both ends docking of annular acoustical panel.
8. a kind of sound serves as a contrast experimental test structure characterized by comprising
Engine (5)；
First docking casing (6), one end are docked with the motor inlet；
Sound as described in claim 1-6 is any serves as a contrast testpieces, and casing is docked with described first in one end of sound lining casing (1)
(6) other end docking；
Second docking casing (7), one end are docked with the other end of sound lining casing (1)；
Air inlet pipe (8), the other end that casing (7) is docked with described second in outlet end dock.
9. sound according to claim 8 serves as a contrast experimental test structure, which is characterized in that
Described first, which takes docking casing (6) and sound lining casing (1), docks the outer wall of one end with the first butt joint edge, and described the
One butt joint edge is connect with the installation side that sound lining casing (1) is located at the end；
The outer wall of described second docking casing (7) described sound lining casing (1) docking one end has the second butt joint edge, and described second pair
Edge fit is connect with the installation side that sound lining casing (1) is located at the end.
10. sound according to claim 9 serves as a contrast experimental test structure, which is characterized in that
First docking casing (6) outer wall has a plurality of first reinforcing rib；
Second docking casing (7) outer wall has a plurality of second reinforcing rib.
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| CN201910874664.3A CN110487533B (en) | 2019-09-17 | 2019-09-17 | Sound lining test piece, assembling method and test structure thereof |
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| CN201910874664.3A CN110487533B (en) | 2019-09-17 | 2019-09-17 | Sound lining test piece, assembling method and test structure thereof |
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Cited By (4)
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| CN111539067A (en) * | 2020-04-16 | 2020-08-14 | 中国航发沈阳发动机研究所 | Horizontal split casing containing structure |
| CN111706433A (en) * | 2020-05-11 | 2020-09-25 | 中国航发沈阳发动机研究所 | Sound lining combined structure |
| CN114013683A (en) * | 2021-11-05 | 2022-02-08 | 中国航发沈阳发动机研究所 | Method for testing noise reduction performance of engine fan acoustic liner |
| CN115243184A (en) * | 2022-07-01 | 2022-10-25 | 北京航空航天大学 | Acoustic lining measuring device |
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| CN111706433A (en) * | 2020-05-11 | 2020-09-25 | 中国航发沈阳发动机研究所 | Sound lining combined structure |
| CN114013683A (en) * | 2021-11-05 | 2022-02-08 | 中国航发沈阳发动机研究所 | Method for testing noise reduction performance of engine fan acoustic liner |
| CN114013683B (en) * | 2021-11-05 | 2023-11-28 | 中国航发沈阳发动机研究所 | Engine fan acoustic liner noise reduction performance test method |
| CN115243184A (en) * | 2022-07-01 | 2022-10-25 | 北京航空航天大学 | Acoustic lining measuring device |
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| CN110487533B (en) | 2021-11-19 |
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