CN108844707A - Wind-tunnel routine test model support sting vibration absorber - Google Patents
Wind-tunnel routine test model support sting vibration absorber Download PDFInfo
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- CN108844707A CN108844707A CN201811028257.2A CN201811028257A CN108844707A CN 108844707 A CN108844707 A CN 108844707A CN 201811028257 A CN201811028257 A CN 201811028257A CN 108844707 A CN108844707 A CN 108844707A
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- 238000009666 routine test Methods 0.000 title claims abstract description 31
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims description 46
- 238000005381 potential energy Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 8
- 210000005069 ears Anatomy 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 12
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention provides a kind of wind-tunnel routine test model support sting vibration absorber, is related to wind-tunnel technique field.The device includes：Stop sleeve, stop sleeve are used to be sheathed on the circumferential surface of the strut of model supporting system.One end of first wing fence, the first wing fence is connected to the outer peripheral surface of stop sleeve.First wing fence connection sheet, the first wing fence connection sheet are connected to the other end of the first wing fence, and the first wing fence connection sheet is used to be connected and fixed with the bent blade mechanism of model supporting system.Second wing fence, one end of the second wing fence are connected to the circumferential surface of stop sleeve, the second wing fence and the first wing fence positional symmetry.Second wing fence connection sheet, the second wing fence connection sheet are connected to the other end of the second wing fence, and the second wing fence connection sheet is used to be connected and fixed with the bent blade mechanism of model supporting system.The device with simple and practical structure, the rigidity of effective lift scheme support system can avoid that judder occurs in wind tunnel test, thus the safety of lifting test and the accuracy of data.
Description
Technical field
The present invention relates to wind-tunnel technique fields, subtract in particular to a kind of wind-tunnel routine test model support sting
Vibrating device.
Background technique
Wind-tunnel is the cradle for developing various aerospace flight vehicles, and various dummy vehicles are adopted mostly in wind tunnel test
Dynamometry and other tests are carried out with cantilever support mode, but the model of cantilever support is used to be easy to produce vibration in wind tunnel test
It is dynamic, certain interference is brought come very big influence, to test data to test safety belt.
In order to reduce the vibration of model, currently, domestic wind-tunnel generallys use the following two kinds way：
The method of traditional reply model vibration includes：
1. replacing strut, modification model quality etc. changes support system structural dynamic characteristics.Replace the bigger branch of diameter
Although support system rigidity can be improved in bar, reduce Oscillation Amplitude, but can introduce biggish support aerodynamic interference, causes data quasi-
Degree decline；And the method (such as leading block or replacement cast material) for modifying model quality vibrates width after not ensuring that modification
Degree decline, and cost and time cycle are all higher.
2. artificial and sensor timely monitor model level of vibration takes the measures such as urgent suspension test.Although this method
It solves test safety problem, but will limit experimental condition, test data in complete aircraft envelope curve cannot be obtained.
Requirement with contemporary aircraft to wind tunnel test accurate data degree and test envelope curve is higher and higher, domestic and international scientific research
Mechanism begin one's study it is various inhibit model vibration problems methods.Currently, studying more damping mode is mainly based upon piezoelectricity
The active damping controls method of ceramic actuator.But active damping method is there are system complex, development cost is high, is easy to appear and is
The problem of system diverging.
Summary of the invention
The purpose of the present invention is to provide a kind of wind-tunnel routine test model support sting vibration absorbers, can be with simple real
Structure, the rigidity of effective lift scheme support system, avoids that judder occurs in wind tunnel test, thus lifting test
The accuracy of safety and data.
What the embodiment of the present invention was realized in：
The embodiment provides a kind of wind-tunnel routine test model support sting vibration absorbers, including：
Stop sleeve, the stop sleeve are used to be sheathed on the outer peripheral surface of the strut of model supporting system；
One end of first wing fence, first wing fence is connected to the outer peripheral surface of the stop sleeve；
First wing fence connection sheet, the first wing fence connection sheet are connected to the other end of first wing fence, and described
One wing fence connection sheet is used to be connected and fixed with the bent blade mechanism of model supporting system；
Second wing fence, one end of second wing fence are connected to the outer peripheral surface of the stop sleeve, second wing fence with
The first wing fence positional symmetry；
Second wing fence connection sheet, the second wing fence connection sheet are connected to the other end of second wing fence, and described
Two wing fence connection sheets are used to be connected and fixed with the bent blade mechanism of model supporting system.
In addition, the wind-tunnel routine test model support sting vibration absorber that embodiment according to the present invention provides, can also have
There is following additional technical characteristic：
In alternative embodiment of the invention, first wing fence is bolted with the stop sleeve；
Second wing fence is bolted with the stop sleeve.
In alternative embodiment of the invention, first wing fence and the stop sleeve are welded；
Second wing fence and the stop sleeve weld.
In alternative embodiment of the invention, the stop sleeve has inner conical surface, and the stop sleeve can pass through institute
State the male cone (strobilus masculinus) part cone match of the strut of inner conical surface and model supporting system.
In alternative embodiment of the invention, the first wing fence connection sheet and the second wing fence connection sheet are ears
Chip architecture, the first wing fence connection sheet and the second wing fence connection sheet pass through the knives bending machine of bolt and model supporting system
Structure is connected and fixed.
In alternative embodiment of the invention, first wing fence includes cutter hub and unload can damping assembly；
The inside of the cutter hub has vibration damping chamber, and the vibration damping chamber is located proximate to the stop sleeve；
The energy damping assembly that unloads includes the first spring, second spring and potential energy ball, one end of first spring and institute
The inner wall connection at the stop sleeve of vibration damping chamber is stated, the other end of first spring and the potential energy ball connect
It connects, one end of the second spring is connect with the vibration damping chamber far from the inner wall at the stop sleeve, second bullet
The other end of spring is connect with the potential energy ball, the direction of the restoring force of first spring and the restoring force of the second spring
Direction it is conllinear, the potential energy ball is suspended at the vibration damping chamber by the active force of first spring and the second spring
It is interior.
In alternative embodiment of the invention, the stiffness factor of first spring is greater than the stiffness system of the second spring
Number.
In alternative embodiment of the invention, the quantity for unloading energy damping assembly is three groups.
In alternative embodiment of the invention, the quality of the energy respective potential energy ball of damping assembly is unloaded described in three groups successively
It is incremented by, number of total coils, length and the stiffness factor that energy respective first spring of damping assembly is unloaded described in three groups are identical, and three groups
The number of total coils for unloading the energy respective second spring of damping assembly and length are incremented by successively, and unloading described in three groups can vibration damping group
The stiffness factor of the respective second spring of part is identical.
In alternative embodiment of the invention, second wing fence is identical as the structure of first wing fence and the cloth of structure
If positional symmetry.
The beneficial effects of the invention are as follows：
Wind-tunnel routine test model support sting vibration absorber is able to ascend the rigidity of model supporting system, installation it is simple and at
This is low, avoids causing test aerodynamic interference, does not destroy original branching rod structure, realizes the mesh for being effectively reduced model Oscillation Amplitude
Mark.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the wind-tunnel routine test model support sting vibration absorber and environment components that the embodiment of the present invention 1 provides
Schematic diagram；
Fig. 2 is the axonometric drawing of the wind-tunnel routine test model support sting vibration absorber of Fig. 1；
Fig. 3 is the main view of Fig. 2；
Fig. 4 is the cross-sectional view of the stop sleeve of Fig. 3；
Fig. 5 is the first wing fence of the wind-tunnel routine test model support sting vibration absorber that the embodiment of the present invention 2 provides
Partial sectional view.
Icon：100- wind-tunnel routine test model support sting vibration absorber；10- stop sleeve；11- inner conical surface；20- first
Wing fence；201- cutter hub；2011- vibration damping chamber；202- is unloaded can damping assembly；The first spring of 2021-；2022- second spring；
2023- potential energy ball；21- the first wing fence connection sheet；The second wing fence of 30-；31- the second wing fence connection sheet；200- model supporting system
Strut；The bent blade mechanism of 300- model supporting system.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Directly contacted including the first and second features, also may include the first and second features be not direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right above sign and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of first feature horizontal height
Less than second feature.
Embodiment 1
Fig. 1 to Fig. 4 is please referred to, a kind of wind-tunnel routine test model support sting vibration absorber 100 is present embodiments provided, is wrapped
It includes：
Stop sleeve 10, stop sleeve 10 are used to be sheathed on the outer peripheral surface of the strut 200 of model supporting system；
One end of first wing fence 20, the first wing fence 20 is connected to the outer peripheral surface of stop sleeve 10；
First wing fence connection sheet 21, the first wing fence connection sheet 21 are connected to the other end of the first wing fence 20, the first wing fence
Connection sheet 21 is used to be connected and fixed with the bent blade mechanism 300 of model supporting system；
Second wing fence 30, one end of the second wing fence 30 are connected to the outer peripheral surface of stop sleeve 10, the second wing fence 30 and first
20 positional symmetry of wing fence；
Second wing fence connection sheet 31, the second wing fence connection sheet 31 are connected to the other end of the second wing fence 30, the second wing fence
Connection sheet 31 is used to be connected and fixed with the bent blade mechanism 300 of model supporting system.
It is an option that the first wing fence 20 is bolted with stop sleeve 10；
Second wing fence 30 is bolted with stop sleeve 10.
It is an option that the first wing fence 20 is welded with stop sleeve 10；
Second wing fence 30 is welded with stop sleeve 10.
In the present embodiment, the first wing fence 20 is welded with stop sleeve 10, and the second wing fence 30 is welded with stop sleeve 10.
Specifically, stop sleeve 10 has inner conical surface 11, stop sleeve 10 can pass through inner conical surface 11 and model support system
The male cone (strobilus masculinus) part cone match of the strut 200 of system.
It should be noted that the male cone (strobilus masculinus) part of the strut 200 of model supporting system is the original conical surface of existing strut
Design, does not need specially to process.
Specifically, the first wing fence connection sheet 21 and the second wing fence connection sheet 31 are ears chip architecture, the connection of the first wing fence
Piece 21 and the second wing fence connection sheet 31 are connected and fixed by the bent blade mechanism 300 of bolt and model supporting system.
Second wing fence 30 and the first wing fence 20 are flat structure, can be avoided and generate biggish aerodynamic interference.
In more detail, the second wing fence 30 is identical as the structure of the first wing fence 20 and the installation position of structure is symmetrical.
Understand by Fig. 3, the axisymmetrical of the second wing fence 30 and the first wing fence 20 about stop sleeve 10 shown in figure.
Such symmetrical structure, stress when support is more balanced, more stable for the promotion of the rigidity of support system.
The principle of the present embodiment is：
In the prior art, although a series of measures such as replacement strut can have certain effect, the negative shadow of bring
It rings but also not small, for example the changes such as shape are easy to produce apparent aerodynamic interference, this influences the data accuracy of test very much.And
Although more effectively, cost, structure etc. are problems to active damping.
The wind-tunnel routine test model support sting vibration absorber 100 of the present embodiment can pass through the first wing fence 20 and second wing
Knife 30 will contact enhancing between strut and bent blade mechanism, effectively promote the globality between strut and bent blade mechanism, and strut exists
On the one hand the first wing fence 20 can be obtained when stress and the support of the second wing fence 30 improves stress-bearing capability, it on the other hand can also be faster
Vibration is passed to bent blade mechanism by ground, to avoid model that judder occurs because of support system insufficient rigidity.With passive
Form, prevent model judder, structure is simple and effective.
The wind-tunnel routine test model support sting vibration absorber 100 of the present embodiment makes full use of existing wind-tunnel typical load cell
Testing equipment does not change the strut 200 of model supporting system, original strut conical surface design is utilized directly to carry out the conical surface
Cooperation does not need the complicated connection such as bolt at strut, does not destroy former branching rod structure.It is minimum to the change of bent blade mechanism, it is only necessary to
For the mounting hole of the position of the first wing fence connection sheet 21 of connection and the second wing fence connection sheet 31 setting bolt.
100 using flexible of wind-tunnel routine test model support sting vibration absorber, caused by model occurs because of air-flow separation
When substantially vibrating, installation wind-tunnel routine test model support sting vibration absorber 100 is without removing former support system, it is only necessary to straight
It connects and the device is installed in former support system, installation period is short, process is simple.
The wall thickness of stop sleeve 10 is relatively thin compared to for strut, and the first wing fence 20 is again flat with the second wing fence 30
Structure and thickness is also thinner than bent blade mechanism much in conjunction with the bearing diagonal of aerofoil profile form, reduces aerodynamic interference, either high speed are also
It is that the wind-tunnel tail supporting mechanism of low speed is all suitable for.
Such structure design, so that interference of the wind-tunnel routine test model support sting vibration absorber 100 to wind tunnel test
It is minimum.
The wind-tunnel routine test model support sting vibration absorber 100 of the present embodiment, by the summary to existing issue, to the greatest extent
In the case where may not influencing wind tunnel test, is designed by cleverly structure, effectively improve the rigidity of support system, and tie
Structure is simple, easy for installation, and cost is relatively low, very practical.
Embodiment 2
Referring to figure 5., the present embodiment is also provided that a kind of wind-tunnel routine test model support sting vibration absorber 100, this
Embodiment the difference from embodiment 1 is that：
First wing fence 20 further includes cutter hub 201 and unload can damping assembly 202；
The inside of cutter hub 201 has vibration damping chamber 2011, and vibration damping chamber 2011 is located proximate to stop sleeve 10；
Unloading energy damping assembly 202 includes the first spring 2021, second spring 2022 and potential energy ball 2023, the first spring 2021
One end connect with the inner wall at the close stop sleeve 10 of vibration damping chamber 2011, the other end and potential energy of the first spring 2021
Ball 2023 connects, and one end of second spring 2022 is connect with the inner wall at the separate stop sleeve 10 of vibration damping chamber 2011, and second
The other end of spring 2022 is connect with potential energy ball 2023, direction and the second spring 2022 of the restoring force of the first spring 2021
The direction of restoring force is conllinear, and potential energy ball 2023 is suspended at vibration damping chamber by the first spring 2021 and the active force of second spring 2022
In room 2011.
The stiffness factor of first spring 2021 is greater than the stiffness factor of second spring 2022.
Multiple groups can be had by unloading energy damping assembly 202, and in the present embodiment, the quantity for unloading energy damping assembly 202 is three groups.
Three groups of quality for unloading the energy respective potential energy ball 2023 of damping assembly 202 are incremented by successively, and three groups are unloaded energy damping assembly 202
The number of total coils of respective first spring 2021, length and stiffness factor are identical, and three groups unload can damping assembly 202 respective second
The number of total coils and length of spring 2022 are incremented by successively, three groups unload can the respective second spring 2022 of damping assembly 202 stiffness
Coefficient is identical.
By taking view shown in Fig. 3 as an example, three groups are unloaded the quality of the energy respective potential energy ball 2023 of damping assembly 202 from left to right
It is incremented by successively, three groups unload can the respective second spring 2022 of damping assembly 202 numbers of total coils and length be also from left to right according to
It is secondary to be incremented by.
Certainly, likewise, the second wing fence 30 is identical as the structure of the first wing fence 20 and the installation position of structure is symmetrical.
Remaining structure can refer to embodiment 1.
The principle of the present embodiment is：
In wind tunnel test, the energy of strut vibration can pass to the first wing fence 20 and the second wing fence 30, the present embodiment
Unload can damping assembly 202, can in such vibration stress, 2023 stress of potential energy ball and move, the first spring 2021 with
The direction of the restoring force of second spring 2022 is along the radial of strut, this allows for potential energy ball 2023 can be along the direction
Radial vibration is received as much as possible, to move back and forth radially.
In other words, the energy of vibration some be converted into the kinetic energy of potential energy ball 2023, and this part kinetic energy energy
It is enough prevented by the first spring 2021 and the effect of second spring 2022, to cut down vibrational energy.Potential energy ball 2023
Quality it is different, stability can be influenced to avoid resonance is generated, the positional symmetry of the first wing fence 20 and the second wing fence 30,
They to strut generate reaction force it is contrary, can have certain counteracting, avoid reaction force influence strut it is steady
It is qualitative.
Further, the stiffness factor of the first spring 2021 is greater than the stiffness factor of second spring 2022, this allows for the
The deformation of two springs 2022 can be greater than the first spring 2021, and potential energy ball 2023 is avoided to strike the close support of vibration damping chamber 2011
Inner wall at sleeve 10.
By unloading energy damping assembly 202, the connection between the first wing fence 20 and the second wing fence 30 and stop sleeve 10 is more
For stabilization, service life can be influenced to avoid the stress accumulation being subject in long-term use process, while can assisted again
A part of vibrational energy is converted to the kinetic energy of potential energy ball 2023 and is made by the first spring 2021 and the resolution of second spring 2022
Firmly, so that vibrational energy obtains certain reduction, the stability of support system is further promoted, model high vibration is avoided.
In conclusion wind-tunnel routine test model support sting vibration absorber 100 of the invention is able to ascend model support system
The rigidity of system, installation is simple and at low cost, avoids causing test aerodynamic interference, does not destroy original branching rod structure, realizes effective
The target of ground reduction model Oscillation Amplitude.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of wind-tunnel routine test model support sting vibration absorber, which is characterized in that including：
Stop sleeve, the stop sleeve are used to be sheathed on the outer peripheral surface of the strut of model supporting system；
One end of first wing fence, first wing fence is connected to the outer peripheral surface of the stop sleeve；
First wing fence connection sheet, the first wing fence connection sheet are connected to the other end of first wing fence, first wing
Knife connection sheet is used to be connected and fixed with the bent blade mechanism of model supporting system；
Second wing fence, one end of second wing fence are connected to the outer peripheral surface of the stop sleeve, second wing fence with it is described
First wing fence positional symmetry；
Second wing fence connection sheet, the second wing fence connection sheet are connected to the other end of second wing fence, second wing
Knife connection sheet is used to be connected and fixed with the bent blade mechanism of model supporting system.
2. wind-tunnel routine test model support sting vibration absorber according to claim 1, which is characterized in that first wing
Knife is bolted with the stop sleeve；
Second wing fence is bolted with the stop sleeve.
3. wind-tunnel routine test model support sting vibration absorber according to claim 1, which is characterized in that first wing
Knife and the stop sleeve weld；
Second wing fence and the stop sleeve weld.
4. wind-tunnel routine test model support sting vibration absorber according to claim 1, which is characterized in that the support sleeve
Cylinder has inner conical surface, and the stop sleeve can be bored by the male cone (strobilus masculinus) part of the inner conical surface and the strut of model supporting system
Face cooperation.
5. wind-tunnel routine test model support sting vibration absorber according to claim 1, which is characterized in that first wing
Knife connection sheet and the second wing fence connection sheet are ears chip architecture, and the first wing fence connection sheet and second wing fence connect
Contact pin passes through bolt and the bent blade mechanism of model supporting system is connected and fixed.
6. wind-tunnel routine test model support sting vibration absorber according to claim 1, which is characterized in that first wing
Knife includes cutter hub and unload can damping assembly；
The inside of the cutter hub has vibration damping chamber, and the vibration damping chamber is located proximate to the stop sleeve；
The energy damping assembly that unloads includes the first spring, second spring and potential energy ball, and one end of first spring subtracts with described
The inner wall connection at the stop sleeve of vibration chamber, the other end of first spring are connect with the potential energy ball,
One end of the second spring is connect with the vibration damping chamber far from the inner wall at the stop sleeve, the second spring
Other end is connect with the potential energy ball, the side of the restoring force in the direction and second spring of the restoring force of first spring
To conllinear, the potential energy ball is suspended in the vibration damping chamber by the active force of first spring and the second spring.
7. wind-tunnel routine test model support sting vibration absorber according to claim 6, which is characterized in that first bullet
The stiffness factor of spring is greater than the stiffness factor of the second spring.
8. wind-tunnel routine test model support sting vibration absorber according to claim 6, which is characterized in that described unload can subtract
The quantity of vibration component is three groups.
9. wind-tunnel routine test model support sting vibration absorber according to claim 8, which is characterized in that unloaded described in three groups
The quality of the energy respective potential energy ball of damping assembly is incremented by successively, and unloading described in three groups can respective first bullet of damping assembly
The number of total coils of spring, length and stiffness factor are identical, unloaded described in three groups can the respective second spring of damping assembly total circle
Several and length is incremented by successively, and the stiffness factor that the energy respective second spring of damping assembly is unloaded described in three groups is identical.
10. wind-tunnel routine test model support sting vibration absorber according to claim 9, which is characterized in that described second
Wing fence is identical as the structure of first wing fence and the installation position of structure is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811028257.2A CN108844707B (en) | 2018-09-04 | 2018-09-04 | Tail strut vibration damper for wind tunnel conventional test model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811028257.2A CN108844707B (en) | 2018-09-04 | 2018-09-04 | Tail strut vibration damper for wind tunnel conventional test model |
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| CN108844707A true CN108844707A (en) | 2018-11-20 |
| CN108844707B CN108844707B (en) | 2024-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588205A (en) * | 2021-08-27 | 2021-11-02 | 重庆电子工程职业学院 | Laboratory wind tunnel tail strut vibration isolation platform design method based on similar theory |
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| CN113588205B (en) * | 2021-08-27 | 2023-05-16 | 重庆电子工程职业学院 | Laboratory wind tunnel tail strut vibration isolation platform design method based on similarity theory |
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