CN104266067A - High-temperature-resistant laminate based on steel wire gauze pad damping structure - Google Patents
High-temperature-resistant laminate based on steel wire gauze pad damping structure Download PDFInfo
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- CN104266067A CN104266067A CN201410444394.XA CN201410444394A CN104266067A CN 104266067 A CN104266067 A CN 104266067A CN 201410444394 A CN201410444394 A CN 201410444394A CN 104266067 A CN104266067 A CN 104266067A
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Abstract
The invention discloses a high-temperature-resistant laminate based on a steel wire gauze pad damping structure. The high-temperature-resistant laminate based on the steel wire gauze pad damping structure comprises an outer protective layer (1), a middle heat insulating layer (2) and an inner structural layer (3). The high-temperature-resistant laminate based on the steel wire gauze pad damping structure is mainly characterized by further comprising the steel wire gauze pad damping structure (4), wherein the steel wire gauze pad damping structure (4) is arranged between the protective layer (1) and the structural layer (3) and is nested in the middle of the heat insulating layer (2), the steel wire gauze pad damping structure (4) is provided with an outer cylinder (41), a first steel wire gauze pad (44) and a second steel wire gauze pad (45), wherein the first steel wire gauze pad (44) and the second steel wire gauze pad (45) are horizontally arranged in the outer cylinder (41) with one above the other, and the second steel wire gauze pad (45) is arranged on a base plate (46) with the lower surface being contact with the upper surface of the structural layer (3). The high-temperature-resistant laminate based on the steel wire gauze pad damping structure has the advantages that the heat insulating effect, the vibration isolation effect and the damping effect are remarkable, and the heat stress generated due to the fact that the temperature of a load-carrying structure of an aircraft can be reduced; the structure is simple, maintenance is easy and cost is low.
Description
Technical field
The invention belongs to field of aerospace technology, relate to a kind of the high-temperature-resistant layer plywood, particularly a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure that are applied under hot environment in high-speed aircraft.
Background technique
Hypersonic aircraft, at discrepancy atmospheric layer or when continuing in space flight, will bear huge aerodynamic force and Aerodynamic Heating.Adopt heat structure completely just can avoid cannot being competent at its aerial mission born because of structure ablation or inefficacy, also can avoid adopting thermal protection to increase the weight of aircraft.Pneumatic heat energy makes the mechanical property of structural material reduce, and working stress reduces so that creep occurs; And the mutual constraint between thermal structure parts, under Thermal Load, stress can be produced in the structure again thus distortion is aggravated and causes the change of warpage and creep properties.Current high-speed aircraft surface structure can not realize the function of the thermal stress that heat insulation, vibration damping, reduction temperature gradient cause simultaneously, and complex structure, and mounting or dismounting complex procedures, reliability is low.For problems, both at home and abroad researchers expect to find more new structure Connecting format to eliminate the thermal stress under hot environment in aircraft heat structure always for many years.
" the refractory alloy thermal protection system design and analysis [J] " of China Acta Astronautica 2008. 9, Vol. 29, No., 5,1698-1683 discloses a kind of heat-resisting alloy honeycomb sandwich structure.The inner panel of this technology adopts titanium alloy honeycomb, and intermediate thermal insulating layer adopts the fibrous insulating material of lower thermal conductivity, and inside and outside metal honeycomb panels is welded together by connecting passage; When bearing Pneumatic pressure, metal connecting passage plays dynamic changes process.Metal fever protection apron and housing construction, through bottom connecting passage, link together by metal fastenings.The heat insulation fiber of lower thermal conductivity is filled, to be reduced by the heat of metal connecting piece ingress engine body structure in connecting passage cavity.Channel cover is made up of High-temperature resistant alloy material, for sealing top plate, prevents high-temperature gas from directly entering substructure.The flexible bending side-closed made with tinsel, in the surrounding of metal fever protection apron, stops the radiation heat transfer in gap between plate.The defect of this technology is: its metal fever safeguard structure only possesses heat insulation effect, other function such as function such as vibration isolation, vibration damping is not done to consider: be heated can produce thermal distortion when " outer panels ", and corresponding thermal distortion can not be there is because success is heat insulation in endothecium structure, when " link " and " fastening piece " for adapts to the change in location of upper and lower layers tie point and produce bending time, cause the thermal stress of lower floor's " wainscot " and " housing construction "; Level of vibration cannot be reduced; Can not dismantle separately, make troubles to maintenance, inspection and replacing, whole service life life cycle costing is high.
Summary of the invention
The object of the invention is to the defect overcoming prior art, propose a kind of can the thermal stress that causes of heat insulation, vibration damping, reduction temperature gradient, structure is simple, be easy to the high-temperature-resistant layer plywood based on steel net pad vibration damping structure safeguarded.
For achieving the above object, the present invention is by the following technical solutions: a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure, comprise the construction layer of outer field protective layer, middle thermal-protective coating, internal layer, it is characterized in that: also comprise a steel net pad vibration damping structure; Described steel net pad vibration damping structure to be arranged between described protective layer and construction layer and to be nested in the middle of described thermal-protective coating; Described steel net pad vibration damping structure has a urceolus and the first steel net pad of upper and lower horizontal arrangement and the second steel net pad in described urceolus; The second described steel net pad is placed on the base plate that a lower surface contacts with construction layer upper surface.
The crown center of described urceolus has a central axis hole; The lower edge of urceolus has the outer flanging of a circle and sidewalls orthogonal; Described outer flanging is evenly equipped with four outer flanging through holes.
Described steel net pad vibration damping structure also comprises an axis be arranged in urceolus; The epimere shaft diameter of described axis is less than hypomere shaft diameter; The circle centre position of described epimere axle has an interior threaded hole extended vertically downward; Contact with the lower surface of protective layer after described urceolus top is stretched out by described central axis hole in the upper end of epimere axle; The lower end surface of described hypomere axle contacts with the upper surface of the second described steel net pad; The first described steel net pad is enclosed within described epimere axle; The upper surface of the first steel net pad contacts with the lower surface at described urceolus top, and its lower surface contacts with the upper-end surface of described hypomere axle.
Described protective layer have one with the funnel-shaped hole of the interior threaded hole concentric of described axis; A sunk screw is through entering in described interior threaded hole after described funnel-shaped hole; The upper surface of described sunk screw is concordant with the upper surface of protective layer.
Described base plate has four with four outer flanging through holes of described urceolus corresponding, bottom hole that concentric, internal diameter are equal up and down; Described construction layer has four positioning holes upper and lower corresponding with described bottom hole, concentric, internal diameter are equal; Four locating pieces penetrate in corresponding up and down separately described outer flanging through hole, bottom hole and bottom hole respectively.
The first described steel net pad, between the second steel net pad and described urceolus, leave side clearance.
Leave between described urceolus and described protective layer and push up gap.
Described protective layer is identical with Laminate construction thickness, and insulation thickness is greater than the thickness of protective layer or the thickness of construction layer.
The thickness proportion of described thermal-protective coating and protective layer, construction layer is 11:1:1.
Described laminate comprises the steel net pad vibration damping structure described at least four, is arranged at four edges of laminate respectively.
Beneficial effect of the present invention and advantage are: the heat that (1) can isolate Aerodynamic Heating is effectively passed to aircraft load-carrying construction.(2) have for the vibration isolation of all directions dynamic load, effectiveness in vibration suppression, the aircraft load-carrying construction vibratory response that the pneumatic dynamic load of outer surface causes can be reduced.(3) thermal stress that aircraft load-carrying construction produces because of non-uniform temperature can effectively be reduced.(4) structure simple, be easy to safeguard, cost is low.
Below in conjunction with accompanying drawing, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is the section of structure of prior art " a kind of heat-resisting alloy honeycomb sandwich structure laminate ".
Fig. 2 is the sectional structure chart of a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure of the present invention.
Fig. 3 is the urceolus view of steel net pad vibration damping structure of the present invention shown in Fig. 2.
Fig. 4 is the middle axonometric drawing of steel net pad vibration damping structure of the present invention shown in Fig. 2.
Fig. 5 is the first steel net pad view of steel net pad vibration damping structure of the present invention shown in Fig. 2.
Fig. 6 is the second steel net pad view of steel net pad vibration damping structure of the present invention shown in Fig. 2.
Fig. 7 is the base view of steel net pad vibration damping structure of the present invention shown in Fig. 2.
Wherein, in Fig. 1,901 refractory alloy channel covers, 902 outer panels, 903 alumina fibre packings, 904 links, 905 wainscots, 906 housing constructions, 907 fastening pieces.
In figures 2-7 which, 1 protective layer, 11 funnel-shaped holes, 2 thermal-protective coatings; 3 construction layers, 31 positioning holes, 4 steel net pad vibration damping structures, 41 urceolus; 411 central axis holes, 412 outer flangings, 413 outer flanging through holes, 43 axis; 431 epimere axles, 432 hypomere axles, 433 interior threaded holes, 44 first steel net pads; 45 second steel net pads, 46 base plates, 461 bottom holes, 5 sunk screws; 6 holding down bolts, 7 side clearances, 8 gaps, top.Wherein, 1 protective layer, 11 funnel-shaped holes, 2 thermal-protective coatings; 3 construction layers, 31 positioning holes, 4 steel net pad vibration damping structures, 41 urceolus; 411 central axis holes, 412 outer flangings, 413 outer flanging through holes, 43 axis; 431 epimere axles, 432 hypomere axles, 433 interior threaded holes, 44 first steel net pads; 45 second steel net pads, 46 base plates, 461 bottom holes, 5 sunk screws; 6 holding down bolts, 7 side clearances, 8 gaps, top.
Embodiment
A kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure of the present invention, comprises the construction layer (3) of outer field protective layer (1), middle thermal-protective coating (2), internal layer, it is characterized in that: also comprise a steel net pad vibration damping structure (4); Described steel net pad vibration damping structure (4) to be arranged between described protective layer (1) and construction layer (3) and to be nested in the middle of described thermal-protective coating (2); Described steel net pad vibration damping structure (4) has a urceolus (41) and first steel net pad (44) of upper and lower horizontal arrangement and the second steel net pad (45) in described urceolus (41); Described the second steel net pad (45) is placed on the base plate (46) that a lower surface contacts with construction layer (3) upper surface.Wherein, described protective layer (1) material is high-temperature alloy, and intermediate thermal insulating layer (2) material is the light heat-insulating material such as refractory fiber, aerogel, and endothecium structure layer (3) material is various structural metal or composite material.
The crown center of described urceolus (41) has a central axis hole (411); The lower edge of urceolus (41) has the outer flanging (412) of a circle and sidewalls orthogonal; Described outer flanging (412) is evenly equipped with four outer flanging through holes (413).
Described steel net pad vibration damping structure (4) also comprises an axis (43) be arranged in urceolus (41); Epimere axle (431) diameter of described axis (43) is less than hypomere axle (432) diameter; The circle centre position of described epimere axle (431) has an interior threaded hole extended vertically downward (433); Pass through to contact with the lower surface of protective layer (1) after described central axis hole (411) stretches out described urceolus (41) top in the upper end of epimere axle (431); The lower end surface of described hypomere axle (432) contacts with the upper surface of described the second steel net pad (45); Described the first steel net pad (44) is enclosed within described epimere axle (431); The upper surface of the first steel net pad (44) contacts with the lower surface at described urceolus (41) top, and its lower surface contacts with the upper-end surface of described hypomere axle (432).Two described steel net pads can adopt high damping wire material
.two steel net pads are adopted to enable the direction, vertical panel face of laminate bear larger static load.
Described protective layer (1) have one with the funnel-shaped hole (11) of interior threaded hole (433) concentric of described axis (43); A sunk screw (5) is through entering in described interior threaded hole (433) after described funnel-shaped hole (11); The upper surface of described sunk screw (5) is concordant with the upper surface of protective layer (1).
Described base plate (46) has four with four outer flanging through holes (413) of described urceolus (41) corresponding, bottom hole (461) that concentric, internal diameter are equal up and down; Described construction layer (3) has four positioning holes (31) upper and lower corresponding with described bottom hole (461), concentric, internal diameter are equal; Four locating pieces (6) penetrate separately up and down in corresponding described outer flanging through hole (413), bottom hole (461) and bottom hole (461) respectively.
Described the first steel net pad (44), between the second steel net pad (45) and described urceolus (41), leave side clearance (7).
Leave between described urceolus (41) and described protective layer (1) and push up gap (8).The effect leaving side clearance (7) and gap, top (8) is: can when posting lotus is not to laminated plate structure layer (3); allow to allow the free deformation of laminate protective layer (1), thus eliminating layer board structure is due to the thermal stress suffered restraints or produce due to the uneven of temperature field.
Described protective layer (1) is identical with construction layer (3) thickness, and thermal-protective coating (2) thickness is greater than the thickness of protective layer (1) or the thickness of construction layer (3).
Described thermal-protective coating (2) is 11:1:1 with the thickness proportion of protective layer (1), construction layer (3).
Described laminate comprises the steel net pad vibration damping structure (4) described at least four, is arranged at four edges of laminate respectively.Laminate size is unrestricted, and preferred laminate board dimension gets 300mm × 300mm.Can according to the quantity of the size determination laminate steel net pad vibration damping structure of load suffered by laminate and density.
In actual use, when a kind of high-temperature-resistant layer plywood protective layer (1) based on steel net pad vibration damping structure of the present invention bears vertical panel face Tensile or Compressive Loading, first steel net pad (44) and the second steel net pad (45) both or a pressurized, effectively can transmit static(al); When lateral load is larger in plate face, by steel net pad (44), (45), axis (43) and the contact of urceolus (41), improve pass force crossly ability, the lateral deformation level of Control protection layer (1); For all directions dynamic load of the upper effect of protective layer (1), due to all will two steel net pad going downs be passed through, and steel net pad has good vibration damping, vibration isolation effect, wherein particularly steel net pad deforms and can cause in gauze pad phase mutual friction between filament, thus plays obvious damping vibration attenuation function; When protective layer (1) bears lateral load in thermal stress or other plate face; due to steel net pad, between axis (43) and urceolus (41), there is gap; can in not transmitted load on the basis of construction layer (3); allow protective layer (1) free deformation, thus reduction layer board structure is due to the thermal stress suffered restraints or produce due to the uneven of temperature field.
Steel net pad of the present invention can adopt high damping wire material to make, and below for Ni-Cr-Ti stainless steel metal wire material, the preparation method of steel net pad is described:
1. Ni-Cr-Ti stainless steel metal wire is woven into the specific wire gaze through number of latitude, wire diameter scope is Ф 0.05mm to Ф 2mm;
2. wire netting is folded into band, arrangement lay, obtains steel net pad blank;
3. stock is put into corresponding mould, bend down rapid-result type at l0KN mono-40KN pressure.
The installation step of a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure of the present invention is as follows:
1. base plate (46) is put on construction layer (3), ensures that upper four positioning holes (31) of base plate (46) upper four bottom holes (461) and construction layer (3) are coaxial respectively;
2. on base plate (46), put the second steel net pad (45), axis (43), the first steel net pad (44) successively;
3. urceolus (41) is enclosed within above-mentioned first, second steel net pad (44), (45) and axis (43) outside, ensure that the bottom of urceolus (41) contacts with base plate (46), and upper four the outer flanging through holes (413) of urceolus (41) are coaxial respectively with upper four bottom holes (461) of base plate (46); Four locating pieces (6) are upwards penetrated from the positioning hole (31) of construction layer (3) bottom, then by bottom hole (461), outer flanging through hole (413), thus makes construction layer (3), base plate (46), urceolus (41) mutually locate with fixing;
4. on construction layer (3), put thermal-protective coating (2), protective layer (1) successively;
5. sunk screw (5) is screwed into the interior threaded hole (433) of axis (43), ensures that sunk screw (5) upper surface and protective layer (1) are in same plane.So far, assembling completes.
Claims (10)
1., based on a high-temperature-resistant layer plywood for steel net pad vibration damping structure, comprise the construction layer (3) of outer field protective layer (1), middle thermal-protective coating (2), internal layer, it is characterized in that: also comprise a steel net pad vibration damping structure (4); Described steel net pad vibration damping structure (4) to be arranged between described protective layer (1) and construction layer (3) and to be nested in the middle of described thermal-protective coating (2); Described steel net pad vibration damping structure (4) has a urceolus (41) and first steel net pad (44) of upper and lower horizontal arrangement and the second steel net pad (45) in described urceolus (41); Described the second steel net pad (45) is placed on the base plate (46) that a lower surface contacts with construction layer (3) upper surface.
2. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1, is characterized in that: the crown center of described urceolus (41) has a central axis hole (411); The lower edge of urceolus (41) has the outer flanging (412) of a circle and sidewalls orthogonal; Described outer flanging (412) is evenly equipped with four outer flanging through holes (413).
3. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1, is characterized in that: described steel net pad vibration damping structure (4) also comprises an axis (43) be arranged in urceolus (41); Epimere axle (431) diameter of described axis (43) is less than hypomere axle (432) diameter; The circle centre position of described epimere axle (431) has an interior threaded hole extended vertically downward (433); Pass through to contact with the lower surface of protective layer (1) after described central axis hole (411) stretches out described urceolus (41) top in the upper end of epimere axle (431); The lower end surface of described hypomere axle (432) contacts with the upper surface of described the second steel net pad (45); Described the first steel net pad (44) is enclosed within described epimere axle (431); The upper surface of the first steel net pad (44) contacts with the lower surface at described urceolus (41) top, and its lower surface contacts with the upper-end surface of described hypomere axle (432).
4. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1, is characterized in that: described protective layer (1) have one with the funnel-shaped hole (11) of interior threaded hole (433) concentric of described axis (43); A sunk screw (5) is through entering in described interior threaded hole (433) after described funnel-shaped hole (11); The upper surface of described sunk screw (5) is concordant with the upper surface of protective layer (1).
5. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1, is characterized in that: described base plate (46) has four with four outer flanging through holes (413) of described urceolus (41) corresponding, bottom hole (461) that concentric, internal diameter are equal up and down; Described construction layer (3) has four positioning holes (31) upper and lower corresponding with described bottom hole (461), concentric, internal diameter are equal; Four locating pieces (6) penetrate separately up and down in corresponding described outer flanging through hole (413), bottom hole (461) and bottom hole (461) respectively.
6. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1 or 3, is characterized in that: described the first steel net pad (44), leave side clearance (7) between the second steel net pad (45) and described urceolus (41).
7. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1 or 3, is characterized in that: leave between described urceolus (41) and described protective layer (1) and push up gap (8).
8. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1; it is characterized in that: described protective layer (1) is identical with construction layer (3) thickness, thermal-protective coating (2) thickness is greater than the thickness of protective layer (1) or the thickness of construction layer (3).
9. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1 or 8, is characterized in that: described thermal-protective coating (2) is 11:1:1 with the thickness proportion of protective layer (1), construction layer (3).
10. a kind of high-temperature-resistant layer plywood based on steel net pad vibration damping structure according to claim 1, is characterized in that: described laminate comprises the steel net pad vibration damping structure (4) described at least four, is arranged at four edges of laminate respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410444394.XA CN104266067B (en) | 2014-09-02 | 2014-09-02 | High-temperature-resistant laminate based on steel wire gauze pad damping structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410444394.XA CN104266067B (en) | 2014-09-02 | 2014-09-02 | High-temperature-resistant laminate based on steel wire gauze pad damping structure |
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| CN104266067A true CN104266067A (en) | 2015-01-07 |
| CN104266067B CN104266067B (en) | 2017-01-11 |
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| CN201176183Y (en) * | 2008-03-28 | 2009-01-07 | 山东金塔建设有限公司 | Automobile casing |
| CN102032305A (en) * | 2010-12-13 | 2011-04-27 | 南京航空航天大学 | Eccentric type steel mesh pad damper |
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2014
- 2014-09-02 CN CN201410444394.XA patent/CN104266067B/en not_active Expired - Fee Related
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| US5750272A (en) * | 1995-02-10 | 1998-05-12 | The Research Foundation Of State University Of New York | Active and adaptive damping devices for shock and noise suppression |
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| CN201176183Y (en) * | 2008-03-28 | 2009-01-07 | 山东金塔建设有限公司 | Automobile casing |
| CN102032305A (en) * | 2010-12-13 | 2011-04-27 | 南京航空航天大学 | Eccentric type steel mesh pad damper |
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Granted publication date: 20170111 Termination date: 20200902 |