CN109113810B - Engine with honeycomb type negative poisson's ratio structure contains ring and manufacturing method - Google Patents
Engine with honeycomb type negative poisson's ratio structure contains ring and manufacturing method Download PDFInfo
- Publication number
- CN109113810B CN109113810B CN201810907616.5A CN201810907616A CN109113810B CN 109113810 B CN109113810 B CN 109113810B CN 201810907616 A CN201810907616 A CN 201810907616A CN 109113810 B CN109113810 B CN 109113810B
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- Prior art keywords
- ring
- cell
- cell wall
- interlayer
- outer ring
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/005—Selecting particular materials
Abstract
The invention discloses a kind of, and the engine with honeycomb type negative poisson's ratio structure contains ring, including inner ring, outer ring, the interlayer being clipped between inner ring and outer rings；It is in cellular multiple cell elements that the interlayer, which has, and the cell element is circumferentially and radial section is negative poisson's ratio structure；The radial section of each cell element all has second cell wall of two the first cell walls and four indents, two first cell walls extend on two peripheries with the inner ring and outer rings concentric respectively, and the first cell wall and the second cell wall are connected and surrounded in indent hexagonal structure；It is mutually fitted between two interlaced and adjacent cell elements by respective second cell wall.The containing ring has preferable impact resistance and energy absorption capability, ensures the reliability of engine；And also there is preferable weight loss effect, can sufficiently excavate the light-weighted potentiality of aviation component structural design.Meanwhile the invention also discloses a kind of manufacturing methods for being easily achieved and controlling.
Description
Technical field
The invention belongs to aero-engine fields, specifically design a kind of engine packet with honeycomb type negative poisson's ratio structure
Rong Huan and manufacturing method.
Background technique
As the requirement to service performances such as aeroengine thrust, revolving speeds is continuously improved, the engine under high speed rotation
Failure fracture failure occurs for the reasons such as blade can hit by foreign object damage, high cycle fatigue, bird, high temperature, fault in material, and then is broken leaf
Piece, which flies out, hits casing, it is easy to non-inclusive accident occur.The non-inclusive fragment of high speed high energy may wound aircraft cabin,
Fuel tank, fluid pressure line and electrical control circuit, bring safely to aviation flight and seriously threaten.Therefore, the packet of aero-engine
Capacitive research is significant for promoting engine health, reliability, airworthiness.
Casing around fan blade commonly referred to as contains ring, its function is not only the casing of airflow channel, but also
Once playing the role of fan blade to fracture from root, the fragment of fan blade can be included in casing.It is military-civil in early days
Aero-engine contains ring and generallys use traditional aluminium alloy and titanium alloy material, due to strength of materials height, good toughness, protection effect
Fruit is preferable.With the continuous improvement to be required performances such as engine thrust-weight ratios, single metal material contains ring and cannot expire
The structure lightened needs of foot.The containing ring for some big-block engines being on active service at present is mostly using aluminium alloy as internal layer casing, table
Facing cut has lattice-shaped slot, tens of layers of high intensity Kevlar fabric is wrapped in outside aluminum alloy casing, outermost layer passes through asphalt mixtures modified by epoxy resin
Rouge adhesive solidification.This method is obvious compared with the metal of early stage containing ring loss of weight, but this flexible wall, which contains case structure, to be had
There are enough exterior spaces to allow high-intensitive Kevlar fabric being capable of fully deformed in fragment impact.
Summary of the invention
Goal of the invention: in order to overcome the drawbacks of the prior art, the present invention provides a kind of with honeycomb type negative poisson's ratio structure
Engine contain ring.It is smaller that the engine contains deformation occupied space when ring is hit, and has lighter quality.
It is a further object of the present invention to provide the manufacturing methods that a kind of above-mentioned engine contains ring.
Technical solution: a kind of engine containing ring with honeycomb type negative poisson's ratio structure of the present invention, including inner ring,
Outer ring, the interlayer being clipped between inner ring and outer rings；It is in cellular multiple cell elements that the interlayer, which has, and the cell element circumferentially prolongs
It stretches and radial section is negative poisson's ratio structure；The radial section of each cell element all has the of two article of first cell wall and four articles of indents
Two cell walls, two first cell walls extend on two peripheries with the inner ring and outer rings concentric respectively, the first born of the same parents
Wall and the second cell wall are connected and are surrounded in indent hexagonal structure；By respective between two interlaced and adjacent cell elements
One the second cell wall mutually fits.
The utility model has the advantages that the engine, which contains ring, uses three-decker, impact velocity is weakened by inner ring first, so that brittleness
Blade it is broken and disperse shock loading, weaken the threat of high energy fragment；Then by the way that honeycomb is arranged between inner ring and outer rings
The interlayer of type negative poisson's ratio structure, using interlayer itself auxetic effect and honeycomb energy-absorbing effect, when by elastic slice impact extruded,
Negative poisson's ratio property is shown immediately, and material can be concentrated to the elastic slice zone of action rapidly, this makes collapsed region local strength aobvious
It writes and increases, therefore impact resistance and the more existing metal containing ring of energy absorption capability are effect improved significant；In addition honeycomb-type structural
The fragment for flying disconnected blade for puncturing inner ring can be made to be embedded, impact of the fragment to rotor rest blade is avoided, reduce
A possibility that secondary damage；And its density of texture significantly reduces, and has preferable weight loss effect, can sufficiently excavate aviation zero
Part structure designs light-weighted potentiality；Outer ring plays rigid support and defense reaction, so that entirely containing the containing ability of ring
And reliability is further promoted.
And a kind of engine with honeycomb type negative poisson's ratio structure of the present invention contains the manufacturing method of ring, it is special
Sign is, includes the following steps:
(1) size for determining interlayer establishes the three-dimensional digital model of interlayer；
(2) utilize laser gain material manufacturing technology by interlayer machine-shaping；
(3) interlayer is welded or is bonded between inner ring and outer rings.
The utility model has the advantages that this method is using laser gain material manufacturing technology and conventional welding, adhesive technology, it is easy to accomplish and control
System, production efficiency with higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that there is the present invention engine of honeycomb type negative poisson's ratio structure to contain ring；
Fig. 2 is that dotted line splits the part section schematic enlarged-scale view that the engine contains ring along Fig. 1；
Fig. 3 is the front view of part section structure shown in Fig. 2；Wherein, line A-A has indicated radial direction；
Fig. 4 is the radial section structural schematic diagram of cell element of the present invention；
Fig. 5 is the structural schematic diagram that engine spliced in embodiment contains ring.
Specific embodiment
In the following, being described in further details in conjunction with attached drawing to the present invention.
As shown in Figure 1, present embodiment discloses a kind of, the engine with honeycomb type negative poisson's ratio structure contains ring, including
Inner ring 1, outer ring 2, the interlayer 3 being clipped between inner ring 1 and outer ring 2.Inner ring 1 and outer ring 2 are all made of aluminium alloy or titanium alloy system
It forms, interlayer 3 is made using titanium alloy or aluminium alloy.Wherein, inner ring 1 with a thickness of 1~2mm, outer ring 2 with a thickness of
2~5mm can change according to winged quality, shape and the kinetic energy for losing blade.Interlayer 3 with a thickness of 12mm, to guarantee to puncture inner ring
The fragment for flying disconnected blade have enough spatial embeddings wherein, avoid fragment from reducing secondary damage to the impact of rotor rest blade
A possibility that hurting effectively improves safety of the casing after blade loss.
It is axially staggered as shown in Fig. 2, interlayer 3 has in cellular multiple cell elements 4, each cell element 4 is circumferentially
Extending is in closed ring, and the radial section of cell element 4 is negative poisson's ratio structure.With traditional metal materials, composite material, foam material
Material and cellular material are compared, which has unique mechanical property, can be obviously improved the impact resistance for containing ring
And energy absorption capability.
Referring specifically to shown in Fig. 3 and Fig. 5, wherein line A-A has indicated radial direction.The radial section of cell element 4 has two
Second cell wall 42 of the first cell wall 41 and four indents.Two the first cell walls 41 are respectively in two with 2 concentric of inner ring 1 and outer ring
Extend on a periphery, the first cell wall 41 and the second cell wall 42 are connected and surrounded in indent hexagonal structure.First cell wall 41
Length is a, and the length of the second cell wall 42 is b, and the angle of the first cell wall 41 and the second cell wall 42 is θ, the first cell wall 41 and second
42 thickness of cell wall is t.In order to make the structure impact resistance and energy absorption capability reach optimum state, in the present embodiment,
The length of one cell wall 41 is twice of 42 length of the second cell wall, wherein the length a=4.6mm of the first cell wall 41, the second cell wall 42
Length b=2.3mm, the angle theta of the first cell wall 41 and the second cell wall 42 is 60 °, the thickness of the first cell wall 41 and the second cell wall 42
Spend t=0.5mm.
The arrangement regulation of cell element 4 are as follows: pass through respective second cell wall between two interlaced and adjacent cell elements 4
42 mutually fit.The multiple cell elements 4 arranged radially form a column, pass through respective one between the cell element 4 of same row
First cell wall 41 mutually fits.Further, in order to make mechanical structure stabilization avoid misplacing, have one in two adjacent column cell elements 4
The first cell wall 41 positioned at both ends of column is born against in inner ring 1 and outer ring 2.Namely it is located in same row, both ends end to end
First cell wall 41 is contacted with inner ring 1 and outer ring 2 respectively, or is not contacted with inner ring 1, outer ring 2, and the end thereof contacts other end is avoided
Discontiguous dislocation causes structural instability.
The present embodiment also provides a kind of manufacturing method of above-mentioned engine containing ring, and this method includes the following steps:
(1) size for determining interlayer 3 establishes the three-dimensional digital model of interlayer 3；
(2) utilize laser gain material manufacturing technology by 2 machine-shaping of interlayer；
(3) interlayer 3 is welded or is bonded between inner ring 1 and outer ring 2.
Outer ring 2 can use monolithic construction as shown in Figure 1, and seperated splicing structure as shown in Figure 5 can also be used,
When for splicing structure, outer ring 2 is spliced by muti-piece outer ring daughter board 21.And on the installation side 22 at outer 21 edge of ring plate
On open up multiple bolts hole, each outer ring daughter board 21 is mounted to by an entirety by bolt 23.It is easy to make and assemble.
Claims (2)
1. a kind of engine with honeycomb type negative poisson's ratio structure contains ring, which is characterized in that including inner ring (1), outer ring
(2), the interlayer (3) being clipped between inner ring (1) and outer ring (2)；It is in cellular multiple cell elements (4), institute that the interlayer (3), which has,
It states cell element (4) circumferentially and radial section is negative poisson's ratio structure；The radial section of each cell element (4) all has two article
The second cell wall (42) of one cell wall (41) and four indents, two first cell walls (41) respectively with the inner ring (1) and
Extend on two peripheries of outer ring (2) concentric, the first cell wall (41) and the second cell wall (42) are connected and surrounded in indent six
Side shape structure；It is mutually fitted between two interlaced and adjacent cell elements (4) by respective second cell wall (42)；
Multiple cell elements (4) for arranging radially form a column, there is be located at both ends the of a column in two adjacent column cell elements (4)
One cell wall (41) is born against in inner ring (1) and outer ring (2)；
The length of first cell wall (41) is twice of the second cell wall (42) length, the first cell wall (41) and the second cell wall (42)
Angle be 60 °；
Wherein, the inner ring (1) is with a thickness of 1~2mm, the outer ring (2) with a thickness of 2~5mm, the interlayer (3) with a thickness of
12mm；Outer ring (2) is spliced by muti-piece outer ring daughter board (21), and is opened on the installation side (22) at outer ring plate (21) edge
If multiple bolts hole, each outer ring daughter board is mounted to by an entirety by bolt (23)；
The engine contains ring using the method manufacture included the following steps:
(1) size for determining interlayer establishes the three-dimensional digital model of interlayer；
(2) utilize laser gain material manufacturing technology by interlayer machine-shaping；
(3) interlayer is welded or is bonded between inner ring and outer rings.
2. the engine according to claim 1 with honeycomb type negative poisson's ratio structure contains ring, which is characterized in that described
Inner ring (1), outer ring (2) and interlayer (3) are made of aluminium alloy or titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907616.5A CN109113810B (en) | 2018-08-09 | 2018-08-09 | Engine with honeycomb type negative poisson's ratio structure contains ring and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907616.5A CN109113810B (en) | 2018-08-09 | 2018-08-09 | Engine with honeycomb type negative poisson's ratio structure contains ring and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
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| CN109113810A CN109113810A (en) | 2019-01-01 |
| CN109113810B true CN109113810B (en) | 2019-07-16 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109883681B (en) * | 2019-03-29 | 2020-06-30 | 衡超装试(北京)科技有限公司 | Steel soft and hard double-structure overspeed test safety ring |
| CN112081636B (en) * | 2019-06-12 | 2022-04-19 | 中国航发商用航空发动机有限责任公司 | Inclusive fan casing |
| CN110238830B (en) * | 2019-07-22 | 2022-02-18 | 哈尔滨工业大学 | Shape memory polymer-based zero-Poisson-ratio multistable stretching arm |
| CN111255834A (en) * | 2020-01-17 | 2020-06-09 | 重庆大学 | Stretching structure with multiple inner recesses |
| CN111376544B (en) * | 2020-03-27 | 2021-12-03 | 郑州机械研究所有限公司 | Aluminum honeycomb plate with high compression strength and manufacturing method thereof |
| CN111959614A (en) * | 2020-08-28 | 2020-11-20 | 东风汽车集团有限公司 | Front wall support of crumple energy absorption box and instrument board beam |
| CN114483852B (en) * | 2021-12-21 | 2024-01-30 | 东南大学 | Negative poisson ratio vibration reduction structure with adjustable rigidity |
| CN114962508B (en) * | 2022-06-14 | 2024-01-26 | 北京工业大学 | Shock attenuation board pole structure with negative poisson's ratio |
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| JPH0498197A (en) * | 1990-08-15 | 1992-03-30 | Toshiba Corp | Nuclear reactor building for nuclear power plant |
| EP1669550A3 (en) * | 2004-11-02 | 2009-11-25 | United Technologies Corporation | Composite sandwich with improved ballistic toughness |
| CN102717542A (en) * | 2012-06-29 | 2012-10-10 | 大连理工大学 | Bulletproof sandwich plate |
| CN107952961A (en) * | 2017-10-23 | 2018-04-24 | 南京航空航天大学 | A kind of method based on phase transformation dimensional effect auto-control laser machining forming precision |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498197A (en) * | 1990-08-15 | 1992-03-30 | Toshiba Corp | Nuclear reactor building for nuclear power plant |
| EP1669550A3 (en) * | 2004-11-02 | 2009-11-25 | United Technologies Corporation | Composite sandwich with improved ballistic toughness |
| CN102717542A (en) * | 2012-06-29 | 2012-10-10 | 大连理工大学 | Bulletproof sandwich plate |
| CN107952961A (en) * | 2017-10-23 | 2018-04-24 | 南京航空航天大学 | A kind of method based on phase transformation dimensional effect auto-control laser machining forming precision |
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