CN203837888U - Booster dynamic stiffness simulation component - Google Patents
Booster dynamic stiffness simulation component Download PDFInfo
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- CN203837888U CN203837888U CN201420207930.XU CN201420207930U CN203837888U CN 203837888 U CN203837888 U CN 203837888U CN 201420207930 U CN201420207930 U CN 201420207930U CN 203837888 U CN203837888 U CN 203837888U
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- China
- Prior art keywords
- dynamic stiffness
- booster
- shaped unit
- joint pin
- piece
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Abstract
The utility model provides a booster dynamic stiffness simulation component. The component comprises a dynamic stiffness simulation piece which can produce elastic deformation under the action of an external force and two connecting pieces. One end of one connecting piece and one end of the other connecting piece are respectively detachably connected with two stress ends of the dynamic stiffness simulation piece. The other end of one connecting piece and the other end of the other connecting piece are respectively rotationally connected with a bench support device and an aircraft wing face test piece rocker arm. According to the booster dynamic stiffness simulation component provided by the utility model, the dynamic stiffness simulation piece can accurately simulate the dynamic stiffness of a real airplane booster; a wing face test piece and the low order natural vibration mode of the support structure meet accuracy requirements; the dynamic stiffness simulation piece is detachably connected with the connecting pieces, the wing face position can be adjusted; compared with the existing technology, test equipment can be greatly reduced, and the test cost is greatly reduced; and the maintenance cost is low.
Description
Technical field
The utility model relates to aviation airfoil structure dynamic fatigue test technology, relates in particular to a kind of booster dynamic stiffness simulated assembly.
Background technology
In the time the true aerofoil of aircraft being carried out to aerofoil dynamic fatigue (buffeting tired) test, obtain airfoil structure dynamic fatigue lifetime and structural failure pattern accurately and reliably, first just need to ensure the low order natural vibration frequency of aerofoil testpieces and natural vibration frequency error≤5～8% of true plane airfoil; If use the true part of booster that the dynamic stiffness of aerofoil is provided in dynamic fatigue test, except needs use the true part of expensive booster, also need in test the peripherals such as supporting hydraulic pressure, servocontrol and power supply; This has not only significantly increased experimentation cost, also needs in test the equipment such as electromechanics, hydraulic pressure are safeguarded and repaired, and has also greatly increased the maintenance cost of equipment.
Utility model content
The utility model provides a kind of booster dynamic stiffness simulated assembly, for overcoming defect of the prior art, reduces plane airfoil dynamic stiffness experimentation cost and cost of equipment maintenance.
The utility model provides a kind of booster dynamic stiffness simulated assembly, comprises that one can produce dynamic stiffness simulating piece and two web members of elastic deformation under external force;
Described in two, web member removably connects with two force sides of described dynamic stiffness simulating piece respectively one end separately;
Described in two web member separately the other end be respectively used to be rotationally connected stand supportive device and plane airfoil testpieces rocking arm.
A kind of optimal way as such scheme:
Described dynamic stiffness simulating piece comprises a U-shaped unit, V-arrangement unit, N shape unit, W unit and/or horizontal S shape unit.
Further:
On the sidewall of described U-shaped unit, be fixed with respectively joint pin;
Described joint pin is threaded with described web member.
Further:
Described in one of them, joint pin has external thread, and described in another, joint pin has internal thread;
One end of described web member has a double-screw bolt section, and the other end has oscillating bearing mounting hole;
Described booster dynamic stiffness simulated assembly also comprises a threaded line pipe;
Described threaded line pipe one end has the internal thread coordinating with the double-screw bolt section of described web member;
The described threaded line pipe other end has the internal thread with the upper outside threaded engagement of described joint pin;
Be located at above-mentioned two internal thread rotations in described threaded line pipe on the contrary.
Preferably:
On the described web member being connected with the female described joint pin of tool, have one for fixing the set nut of this joint pin.
Another kind of optimal way as such scheme:
Described dynamic stiffness simulating piece comprises at least two U-shaped unit;
Described in adjacent two, between U-shaped unit, sidewall close to each other is fixedly connected with by a roof.
Further:
Described roof two ends connect respectively the opening part of U-shaped unit described in adjacent two;
One of them sidewall of the described U-shaped unit that each described roof and both sides are closed on forms an additional U-shaped unit;
The opening direction of described additional U-shaped unit is contrary with the opening direction of described U-shaped unit.
The booster dynamic stiffness simulated assembly that the utility model provides, by the accurately dynamic stiffness of the true booster of simulated aircraft of dynamic stiffness simulating piece, guarantees that the low order natural mode of vibration of aerofoil testpieces meets accuracy requirement compared with true aerofoil mode of oscillation; Can realize the function that regulates aerofoil position by removably connecting of dynamic stiffness simulating piece and web member, greatly reduce testing equipment, and significantly reduced experimentation cost with respect to prior art, in addition, maintenance cost is lower.
Brief description of the drawings
The use view of the booster dynamic stiffness simulated assembly that Fig. 1 provides for the utility model embodiment mono-;
Fig. 2 a is the partial sectional view of dynamic stiffness simulating piece in Fig. 1;
Fig. 2 b is the right view of Fig. 2 a;
Fig. 3 is the front view of web member in Fig. 1;
Fig. 4 is along A-A to cut-open view in Fig. 3;
Fig. 5 is along B-B to cut-open view in Fig. 3;
Fig. 6 is along C-C to cut-open view in Fig. 3;
Fig. 7 is the front view of set nut in Fig. 1;
Fig. 8 is along D-D to cut-open view in Fig. 7;
Fig. 9 is the cut-open view of threaded line pipe in Fig. 1;
Figure 10 is the left view of Fig. 9;
The structural representation of the dynamic stiffness simulating piece that Figure 11 provides for the utility model embodiment bis-;
The structural representation of the dynamic stiffness simulating piece that Figure 12 provides for the utility model embodiment tri-.
Embodiment
As shown in Fig. 1-12, the utility model embodiment provides a kind of booster dynamic stiffness simulated assembly, comprises that one can produce dynamic stiffness simulating piece 1 and two web members 2 of elastic deformation under external force; Two web members separately one end 2a removably connect with two force side 1a of dynamic stiffness simulating piece 1 respectively; Two web members separately other end 2b are respectively used to be rotationally connected stand supportive device 10 and plane airfoil testpieces rocking arm 20.
The booster dynamic stiffness simulated assembly that the utility model provides, while carrying out simulation test, first two web members 2 one end 2a is separately removably connected with two force side 1a of dynamic stiffness simulating piece 1 respectively, completing booster dynamic stiffness simulating piece assembles, web member 2 is column, and the axis direction Y of web member 2 is identical with the tensile elasticity deformation direction of dynamic stiffness simulating piece 1 here; Again that the other end 2b of one of them web member 2 is hinged by oscillating bearing and stand supportive device 10; Finally that the other end 2b of another web member 2 is also hinged by oscillating bearing 23 and the rocking arm 20 of the plane airfoil testpieces end that suspends, the axis direction Y of above-mentioned oscillating bearing 23 is all vertical with the axis direction X of web member 2.
Dynamic stiffness simulating piece in the present embodiment can be a U-shaped unit, V-arrangement unit, N shape unit, W unit or horizontal S shape unit, also can be above-mentioned several combination arbitrarily, it can also be the combination of above-mentioned more than two U-shaped unit, more than two combination of V-arrangement unit, the combination of more than two N shape unit, the combination of more than two combination of W unit or two above horizontal S shape unit, concrete array configuration is not limit at this, as long as meet and can produce in one direction the dynamic stiffness identical with true booster, this direction is horizontal in the present embodiment, i.e. axial (X-direction) of two web members 2, oscillating bearing 23 be axially longitudinally (Y direction), referring to Fig. 1 and Fig. 3-6, aerofoil testpieces 30 is fixedly connected with rocking arm 20 by a rotating shaft 40, and rotating shaft 40 is supported on stand supportive device 10.
Aerofoil testpieces 30 and supporting structure thereof (comprising rocking arm 20 and rotating shaft 40) are all identical with true aircraft, when test, on aerofoil testpieces 30, apply Dynamic Load Spectrum, simulation aerofoil testpieces 30 be truly subject to load condition, the fatigue strength of examination aerofoil and supporting structure thereof, the tired weak part of exposed structure and fatigue damage key position, determine the crack initiation life of tired key position, for fatigue lifetime, proof cycle and the maintenance program of determining aerofoil and supporting structure thereof provide basis; The effect of booster dynamic stiffness simulated assembly in this test is identical with the effect of booster, makes the low order natural mode of vibration of aerofoil testpieces 30 meet accuracy requirement compared with the true aerofoil mode of aircraft; Can realize the function that regulates aerofoil position by removably connecting of dynamic stiffness simulating piece and web member, greatly reduce testing equipment, and significantly reduced experimentation cost with respect to prior art, in addition, maintenance cost is lower.
In order to ensure that error between the low order natural vibration frequency of aerofoil testpieces and supporting structure thereof and the natural vibration frequency of true aircraft is in the scope requiring, in the time making the design of booster dynamic stiffness simulated assembly, need to repeatedly revise by shape and the thickness of simulation test to dynamic stiffness simulating piece repeatedly, the dynamic stiffness analogy method of dynamic stiffness simulating piece is to design the tensile elasticity deflection realization of dynamic stiffness simulating piece according to dynamics simulation result, adopt a U-shaped part such as dynamic stiffness simulating piece is concrete, by the shape to U-shaped portion structure, the design parameters such as thickness are optimized iteration simulation calculation, obtain the parameter of structure design value that can Reality simulation booster different dynamic stiffness require, complete the design of dynamic stiffness simulating piece and manufacture.Reality simulation booster dynamic stiffness simulating piece in the present embodiment, has been successfully applied to aircraft vertical fin and has buffeted dynamic fatigue test, and result of use is good, has significantly reduced experimentation cost, has improved test efficiency.
As a kind of embodiment of dynamic stiffness simulating piece, as shown in Fig. 2 a, Fig. 2 b, dynamic stiffness simulating piece 1 comprises a U-shaped unit.That the present embodiment has advantages of is simple in structure, be easy to make.
As the preferred version of the present embodiment, as Figure 1-10 shows, the sidewall of U-shaped unit is namely fixed with respectively a joint pin 11 on force side, referring to Fig. 2 a; Joint pin 11 is threaded with web member 2.Provide a kind of concrete structure below, on one of them joint pin 11, have external thread, another joint pin 11 has internal thread, and web member 2 one end have a double-screw bolt section 21, and the other end has the mounting hole 22 for oscillating bearing 23 is installed, specifically referring to Fig. 3-6; Assembly also comprises a threaded line pipe 3, and threaded line pipe 3 one end have the first internal thread 31 coordinating with the double-screw bolt section 21 of web member 2, and threaded line pipe 3 other ends have the second internal thread 32 coordinating with joint pin 11; Be located at the first internal thread 31 in threaded line pipe 3 contrary with the second internal thread 32 rotation directions, specifically referring to Fig. 9, Figure 10, need to regulate the entire length of booster dynamic stiffness simulated assembly time, rotation threaded line pipe 3; The internal thread of another joint pin 11 coordinates with the double-screw bolt section 21 of another web member 2, finally lock by the set nut 4 being spun in these web member 2 double-screw bolt sections 21, this structure that removably connects is in the time adjusting aerofoil position, only need to rotate threaded line pipe 3, realize the adjustment of aerofoil position by the entire length of adjusting booster dynamic stiffness simulated assembly, after adjusting to the right place, use set nut 4 fastening, anti-skidding, easy to operate; And in the time changing dynamic stiffness simulating piece 1, unclamp set nut 4, the joint pin 11 of dynamic stiffness simulating piece 3 other ends can be separated with web member 2, be also convenient for changing.
As another embodiment of dynamic stiffness simulating piece, as shown in figure 11, dynamic stiffness simulating piece comprises at least two U-shaped unit 12; Sidewall close to each other between adjacent two U-shaped unit 12 is fixedly connected with by a roof 13.The position being connected with roof 13 two ends on the concrete shape of roof 13 and U-shaped unit is not all limit, such as, roof 13 is plate always, these straight plate two ends can all be connected to the opening part of adjacent two U-shaped unit sidewall, also can all be connected to adjacent two U-shaped unit sidewall middle part, can also all be connected to the bending place of adjacent two U-shaped unit sidewall; In addition roof 13 can also be the shaped forms such as arc.
As the preferred version of the present embodiment, as shown in figure 12, roof 13 two ends connect respectively the opening part of adjacent two U-shaped unit 12; Each roof 13 forms an additional U-shaped unit 14 with one of them sidewall of U-shaped unit that both sides are closed on; The opening direction of additional U-shaped unit 14 is contrary with the opening direction of U-shaped unit 12.In the present embodiment, multiple U-shapeds unit 12 is spaced undulate with additional U-shaped unit 14, better with respect to the dynamic stiffness simulating piece elasticity of single U-shaped cell formation.
Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of the each embodiment technical scheme of the utility model.
Claims (7)
1. a booster dynamic stiffness simulated assembly, is characterized in that:
Comprise that one can produce dynamic stiffness simulating piece and two web members of elastic deformation under external force;
Described in two, web member removably connects with two force sides of described dynamic stiffness simulating piece respectively one end separately;
Described in two web member separately the other end be respectively used to be rotationally connected stand supportive device and plane airfoil testpieces rocking arm.
2. booster dynamic stiffness simulated assembly according to claim 1, is characterized in that:
Described dynamic stiffness simulating piece comprises a U-shaped unit, V-arrangement unit, N shape unit, W unit and/or horizontal S shape unit.
3. booster dynamic stiffness simulated assembly according to claim 2, is characterized in that:
On the sidewall of described U-shaped unit, be fixed with respectively joint pin;
Described joint pin is threaded with described web member.
4. booster dynamic stiffness simulated assembly according to claim 3, is characterized in that:
Described in one of them, joint pin has external thread, and described in another, joint pin has internal thread;
One end of described web member has a double-screw bolt section, and the other end has oscillating bearing mounting hole;
Described booster dynamic stiffness simulated assembly also comprises a threaded line pipe;
Described threaded line pipe one end has the internal thread coordinating with the double-screw bolt section of described web member;
The described threaded line pipe other end has the internal thread with the upper outside threaded engagement of described joint pin;
Be located at above-mentioned two internal thread rotations in described threaded line pipe on the contrary.
5. booster dynamic stiffness simulated assembly according to claim 4, is characterized in that:
On the described web member being connected with the female described joint pin of tool, have one for fixing the set nut of this joint pin.
6. booster dynamic stiffness simulated assembly according to claim 1, is characterized in that:
Described dynamic stiffness simulating piece comprises at least two U-shaped unit;
Described in adjacent two, between U-shaped unit, sidewall close to each other is fixedly connected with by a roof.
7. booster dynamic stiffness simulated assembly according to claim 6, is characterized in that:
Described roof two ends connect respectively the opening part of U-shaped unit described in adjacent two;
One of them sidewall of the described U-shaped unit that each described roof and both sides are closed on forms an additional U-shaped unit;
The opening direction of described additional U-shaped unit is contrary with the opening direction of described U-shaped unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420207930.XU CN203837888U (en) | 2014-04-25 | 2014-04-25 | Booster dynamic stiffness simulation component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420207930.XU CN203837888U (en) | 2014-04-25 | 2014-04-25 | Booster dynamic stiffness simulation component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203837888U true CN203837888U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420207930.XU Withdrawn - After Issue CN203837888U (en) | 2014-04-25 | 2014-04-25 | Booster dynamic stiffness simulation component |
Country Status (1)
| Country | Link |
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| CN (1) | CN203837888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034497A (en) * | 2014-04-25 | 2014-09-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Dynamic stiffness simulating assembly of booster |
-
2014
- 2014-04-25 CN CN201420207930.XU patent/CN203837888U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034497A (en) * | 2014-04-25 | 2014-09-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Dynamic stiffness simulating assembly of booster |
| CN104034497B (en) * | 2014-04-25 | 2017-05-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Booster dynamic stiffness simulated assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20170531 |
|
| AV01 | Patent right actively abandoned |