CN103278305A - Wind channel model tail support rod structure capable of actively damping vibration - Google Patents
Wind channel model tail support rod structure capable of actively damping vibration Download PDFInfo
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- CN103278305A CN103278305A CN2013101969501A CN201310196950A CN103278305A CN 103278305 A CN103278305 A CN 103278305A CN 2013101969501 A CN2013101969501 A CN 2013101969501A CN 201310196950 A CN201310196950 A CN 201310196950A CN 103278305 A CN103278305 A CN 103278305A
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Abstract
The invention provides a wind channel model tail support rod structure capable of actively damping vibration by utilizing a piezoelectric stack. The front end of the tail support rod is used for mounting a model internally provided with a strain meter balance, and the rear end of the tail support rod is fixed on a support seat by a locking nut; the tail support rod is divided into a front tail support rod section and a rear tail support rod section, which are connected by a hole shaft in a match mode; a pair of symmetrically connected flange plates in the connecting part are positioned at the front and rear tail support rod sections respectively; and four positioning slots, mutually forming an included angle of 90 degrees, are arranged on the two flange plates and are provided with the piezoelectric stack. Compared with the traditional passive vibration damping structure, the wind channel model tail support rod structure capable of actively damping vibration has the advantages of high frequency and fast responding as adopting the intelligent piezoelectric material as a vibration damping element, can effectively control the vibration, has no effect on the flow field of a test model as the whole vibration damping part is small in size, is simple in structure and design and suitable for the vibration damping of tail support rod structures in different sizes, and has better usability and maintainability.
Description
Technical field
The present invention relates to a kind of wind tunnel model branching rod structure, specifically is a kind of wind tunnel model support sting structure of active damping.
Background technology
In the wind tunnel force measurement test of routine, model in wind tunnel and stationary installation thereof have constituted a cantilever beam system.This cantilever beam system is made up of test model, strain gage balance, support sting and support, and wherein test model is positioned at foremost, and strain gage balance is fixed in the model, and model is installed on the elongated support sting, and support sting is fixed on the support.Like this, when wind tunnel test, model is subjected to the effect of non-permanent aerodynamic force, vibrates with balance, support sting and support.This vibration not only to test figure accurately bring influence, and because aerodynamic force is a wideband excitation load, be easy to cause that this support system produces resonance.If time of vibration is long, amplitude is excessive, frequency is too high, the destruction that causes model, even the fracture of support sting are brought serious potential safety hazard to test, have hindered finishing smoothly of wind tunnel test, influence the aircraft research and development.Therefore, how effectively support sting vibration characteristics in the blowing process being suppressed, is the key issue that urgent need will solve in the wind tunnel test.
Reason from the vibration generation, solution can be proposed both ways: the one, the improvement of wind-tunnel aerodynamic characteristic, namely improve driving source or obtain good aerodynamic characteristic by revising mode shape by changing Flow Field in Wind Tunnel, thereby the resonant frequency of avoiding reaching support system reaches the purpose that reduces to vibrate.It is very big clearly to improve the driving source difficulty, and financial cost height and applicability are not strong, and revises the purpose that mode shape has been run counter to test.The 2nd, the improvement of carrying out from model supporting construction aspect improves its damping characteristic by the dynamics that improves the model supporting construction and reaches the vibration damping purpose.The improvement of structure aspects mainly reaches by raising architecture quality, rigidity or increasing damping and reduces to vibrate purpose.But the quality or the rigidity that improve structure must increase its size, quite or greater than moulded dimension, must bring the interference of stream field as the cross sectional dimensions of support sting and support and test model size, influence the accuracy of test figure.The raising structural damping is namely added damping material and is reached effectiveness in vibration suppression by damping material absorption vibrational energy in structure, also unavoidably cause physical dimension excessive but add damping material, and effectiveness in vibration suppression is undesirable.Above method all is traditional passive vibration damping methods.
The appearance of piezoelectric is achieved vibration active damping technology.Piezoelectric refers to as external load function during in material, can produce the electric charge of opposite in sign at material surface, and this phenomenon is called the direct piezo electric effect of piezoelectric.Direct piezo electric effect is offset the material internal charge-site, produces polarization, and the electric density that polarization produces is directly proportional with the external applied load size.On the contrary, apply certain voltage in piezoelectric material body, piezoelectrics will produce corresponding driving force and distortion, and this phenomenon is called the inverse piezoelectric effect of piezoelectric, utilize the inverse piezoelectric effect of piezoelectric can make various piezoelectric actuators.At present the wider piezoelectric of range of application is piezoelectric ceramics, and piezoelectric ceramics has that response speed is fast, wide frequency range, advantage that driving force is big, is to carry out the good selection of active damping.Chip architecture is arranged and stack two kinds on structure from version branch piezoelectric actuator, the piezoelectric actuator of two kinds of versions all can be used for vibration damping.During application, chip architecture is with piezoelectric chip one side and construction bonds or makes double wafer structure, utilizes the eccentric force that produces on the wafer that structure is applied counter torque and reaches the vibration damping purpose, and its driving force and displacement are less.The piezoelectric stack structure is to be encapsulated in the removable betal can in termination with the overlapping stacking of piezoelectric patches and with it, utilizes the displacement of each piezoelectric patches and the accumulation of power can produce big power output and displacement.
Domesticly also obtaining huge achievement aspect the research of piezoelectric actuator, but focus mostly in experimental stage in the research that utilizes piezoelectric actuator to carry out vibration damping, research concentrates on and utilizes piezoelectric patches that vibration damping is carried out in the cantilever vibration of beam, be about to the side that piezoelectric patches is bonded in semi-girder, the eccentric force that produces by piezoelectric patches reaches the vibration damping purpose.The rigidity of research object is little, frequency is low, and the moment of flexure that produces in vibration processes is also less, and content focuses mostly on aspect the foundation of analytical model and method for optimizing position.And do not see the pertinent literature report for the research that piezoelectric especially piezoelectric stack is applied to engineering medium frequency height, vibration damping aspect that required outside force is big.In the world the more country of piezoelectric actuator research is mainly contained the U.S., Germany and Japanese, and utilize the piezoelectric stack actuator to wind tunnel test in support sting carry out aspect the research of active damping Germany and walk in the prostatitis.Germany ERAS company and European transonic wind tunnel company early start utilize piezoelectric stack to carry out the research (periodical: AIAA-2001-0610 of support sting support system active damping, calendar year 2001, the page number: 1 – 8), its principle is by improving to install piezoelectric stack to the dynamical property analysis of support sting and to partial structurtes, under the excitation of voltage, utilize the inverse piezoelectric effect of piezoelectric stack to produce the moment opposite with the support sting vibration, thereby reach the purpose of active damping.In the research strain gage balance and support sting front end junction are designed to piezoelectric stack ACTIVE CONTROL interface, piezoelectric stack is connected with balance, support sting respectively, connects the whole piezoelectric stack in back and is positioned at test model.This active damping structure is connected the piezoelectric stack structure because of needs with strain gage balance, not only will change the branching rod structure design during application, and also will make an amendment the structure of balance; Whole piezoelectric stack ACTIVE CONTROL face is subjected to piezoelectric stack size and structure influence in model in addition, require model, balance and support sting size relatively large, thereby this structure is suitable for the vibration damping of large scale or full-scale blowing model; This piezoelectric stack active damping complex structure, and whole piezoelectric stack structure at last is installed in the model, and causing in use very inconvenient to its installation and maintenance also is the weak point of this structure.
Summary of the invention
The invention provides a kind of pneumatic model support sting structure of utilizing piezoelectric stack to carry out active damping, can realize the effective inhibition to main vibration modes, can be applicable to the vibration damping of different size size support sting structure simultaneously, dismantle easy to maintenance.
Support sting front end of the present invention is used for the dress model, the support sting rear end is fixed on the bearing by set nut, it is characterized in that: described support sting is divided into support sting leading portion and the support sting back segment that is connected by the hole axle, there is a pair of symmetrical flange connecting dish to lay respectively on support sting leading portion and the support sting back segment in the junction, it is 90 ° locating slot that four mutual angles are arranged respectively on two ring flanges, and piezoelectric stack is installed between locating slot.
Further improve, be connected with nut with hold-down bolt between the described symmetrical flange connecting dish, between nut and the ring flange packing ring is arranged.
Further improve, described piezoelectric stack is fixed on the ring flange of support sting back segment by gib screw.
Beneficial effect of the present invention is:
1, compare with traditional passive vibration-proof structure, owing to adopted the intelligent piezo material as damping element, have frequency height, advantage that response is fast, can realize effective control of vibrating, and whole vibration damping partial volume is little can the flow field of test model not exerted an influence;
2, this vibration-proof structure is respectively installed a piezoelectric stack in support sting xsect upper and lower, left and right respectively, can realize the effective inhibition to main vibration modes, satisfies the needs that engineering is used;
3, this structural design is simple, because the piezoelectric stack damping area is positioned at whole support sting rear end, strain gage balance is not made an amendment, and therefore can be applicable to the vibration damping of different size size support sting structure;
4, this vibration-proof structure need not dismantled test model, strain gage balance etc. in installation/maintenance process, and opening character is good, has good usability and maintainability.
Description of drawings
Fig. 1 is front view of the present invention;
Fig. 2 is vertical view of the present invention;
Fig. 3 is 2 times of enlarged drawings of I partial view among Fig. 1;
Fig. 4 is 2 times of enlarged drawings of A-A cut-open view among Fig. 1;
Fig. 5 is 2 times of enlarged drawings of II partial view among Fig. 2;
Fig. 6 is support sting leading portion cut-open view;
Fig. 7 is support sting back segment cut-open view;
Fig. 8 is B-B face cut-open view among Fig. 6;
Fig. 9 is C-C face cut-open view among Fig. 7;
Figure 10 is D-D face cut-open view among Fig. 7;
Figure 11 is the E-E face cut-open view among Fig. 9;
Figure 12 is the piezoelectric stack outside drawing.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1～Fig. 5 is whole support sting vibration-proof structure assembly relation, Fig. 1 is front view of the present invention, Fig. 2 is vertical view of the present invention, on the support sting leading portion 3 of the present invention model 1 is housed, strain gage balance 2 is equipped with in model 1 inside, support sting back segment 5 is fixed on the bearing 6 by set nut 7, it is characterized in that: described support sting leading portion 3 and support sting back segment 5 are connected by the hole axle, there is a pair of symmetrical flange connecting dish to lay respectively on support sting leading portion 3 and the support sting back segment 5 in the junction, it is 90 ° locating slot that four mutual angles are arranged respectively on two ring flanges, is connected with piezoelectric stack 4 between locating slot.
Fig. 3 is 2 times of enlarged drawings of I partial view among Fig. 1, and Fig. 4 is 2 times of enlarged drawings of A-A cut-open view among Fig. 1, and Fig. 5 is 2 times of enlarged drawings of II partial view among Fig. 2, is connected with nut 9 with hold-down bolt 8 between two ring flanges, and packing ring 10 is arranged between nut 9 and the ring flange.Piezoelectric stack 4 is fixed on the ring flange of support sting back segment 5 by gib screw 11.
Fig. 6～Figure 12 is the version of critical part.
Mounting process of the present invention is:
1) the support sting leading portion is cooperated by axis hole with the support sting back segment is installed as an integral post.
2) 4 piezoelectric stack front end bulbs being withstood on the mutual angle of support sting leading portion ring flange is in 90 ° the locating slot, and the piezoelectric stack rear end is installed in the mutual angle of support sting back segment to be in 90 ° the locating slot and to be fixed on gib screw on the ring flange of support sting back segment.
3) pass the bolt hole on the ring flange of support sting leading portion and support sting back segment with hold-down bolt and with packing ring, gland nut piezoelectric stack is pressed between two ring flanges.
4) strain gage balance is installed in the front end of support sting leading portion.
5) test model is connected with strain gage balance.
6) at last whole support sting structure is fixed on the bearing by set nut.
The material of parts is as follows: support sting leading portion material therefor is No. 20 steel; Support sting back segment material therefor is No. 20 steel; The bearing material therefor is No. 20 steel; The hold-down bolt material therefor is the 30CrMoSi steel, and through heat treatment reinforcement, the hardness after the thermal treatment is HRC31～35; The set nut material therefor is the 30CrMoSi steel, and through heat treatment reinforcement, the hardness after the thermal treatment is HRC31～35; Nut, packing ring, gib screw are standard component, can buy in market; Test model, strain gage balance are finished parts, are existing parts when drying test; Piezoelectric stack is finished parts, and its version is bulb mechanical encapsulation formula piezoelectric stack, and 15 millimeters of diameters can be bought in market.
The concrete application approach of the present invention is a lot, and the above only is preferred implementation of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (3)
1. the wind tunnel model support sting structure of an active damping, the support sting front end is used for dress model (1), the support sting rear end is fixed on the bearing (6) by set nut (7), it is characterized in that: described support sting is divided into support sting leading portion (3) and the support sting back segment (5) that is connected by the hole axle, there is a pair of symmetrical flange connecting dish to lay respectively on support sting leading portion (3) and the support sting back segment (5) in the junction, it is 90 ° locating slot that four mutual angles are arranged respectively on two ring flanges, and piezoelectric stack (4) is installed between locating slot.
2. the wind tunnel model support sting structure of active damping according to claim 1 is characterized in that: be connected with nut (9) with hold-down bolt (8) between the described symmetrical flange connecting dish, packing ring (10) is arranged between nut (9) and the ring flange.
3. the wind tunnel model support sting structure of active damping according to claim 1, it is characterized in that: described piezoelectric stack (4) is fixed on the ring flange of support sting back segment (5) by gib screw (11).
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| CN103487231A (en) * | 2013-09-24 | 2014-01-01 | 大连理工大学 | Active vibration abatement device of supporting rod type wind tunnel model |
| CN105258912A (en) * | 2015-11-13 | 2016-01-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-speed wind tunnel model test support device based on internal balance |
| CN105527069A (en) * | 2016-01-04 | 2016-04-27 | 空气动力学国家重点实验室 | Transonic wind tunnel test supporting device, installation method and application thereof |
| CN105651480A (en) * | 2015-12-31 | 2016-06-08 | 空气动力学国家重点实验室 | Wind tunnel test tail support interference correction method and application thereof |
| CN105699045A (en) * | 2015-12-25 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for locking and dismounting tail support rod of wind tunnel test model |
| CN105758611A (en) * | 2016-03-07 | 2016-07-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Impact resisting device for wind-tunnel balance |
| CN106441786A (en) * | 2016-09-12 | 2017-02-22 | 哈尔滨工程大学 | Active vibration restraining actuating mechanism applied to wind tunnel model vibration decoupling control |
| CN106840597A (en) * | 2016-12-13 | 2017-06-13 | 中国航天空气动力技术研究院 | A kind of light weighed model structure for wind tunnel test |
| RU2629696C1 (en) * | 2016-10-21 | 2017-08-31 | Федеральное государственное бюджетное учреждение науки Институт машиноведения им. А.А. Благонравова Российской академии наук (ИМАШ РАН) | Device for model position changing in working part of wind tunnel |
| CN107314883A (en) * | 2017-06-23 | 2017-11-03 | 大连理工大学 | A kind of wind load of wind tunnel model vibration is from oscillation damping method |
| CN107356402A (en) * | 2017-07-13 | 2017-11-17 | 南京航空航天大学 | A kind of wind-tunnel support sting that Active Vibration Control can be realized containing flexible hinge |
| CN107631856A (en) * | 2017-09-01 | 2018-01-26 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of dynamometry, pressure measurement, angular surveying, vibration suppression allpurpose model |
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| CN108362468A (en) * | 2018-05-25 | 2018-08-03 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of model vibration-repressing device that wind-tunnel supersonic speed starts and cut-offs |
| CN108844707A (en) * | 2018-09-04 | 2018-11-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind-tunnel routine test model support sting vibration absorber |
| CN109540455A (en) * | 2018-11-06 | 2019-03-29 | 中国航天空气动力技术研究院 | A kind of thin-walled model twin beams articulated structure and dynamic test method for supporting |
| CN110907128A (en) * | 2019-12-26 | 2020-03-24 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel model vibration suppression device and system |
| CN111366330A (en) * | 2020-03-30 | 2020-07-03 | 南京航空航天大学 | Wind tunnel tail strut structure suitable for active vibration reduction in low-temperature environment |
| CN112067229A (en) * | 2020-09-14 | 2020-12-11 | 中国空气动力研究与发展中心 | Center-loaded large-size unidirectional force piezoelectric sensor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783994A (en) * | 1988-01-13 | 1988-11-15 | The Administrator Of The National Aeronautics And Space Administration | Pressure measuring probe |
| JPH02221837A (en) * | 1989-02-22 | 1990-09-04 | Mitsubishi Electric Corp | Intermittent blowout type wind tunnel testing device |
| US5644075A (en) * | 1995-04-07 | 1997-07-01 | European Transonic Windtunnel Gmbh | Wind tunnel model support with vibration detection balance and countervibration means |
| JP2004069330A (en) * | 2002-08-01 | 2004-03-04 | Mitsubishi Heavy Ind Ltd | Wind tunnel test model damping adapter and wind tunnel test model damping device |
-
2013
- 2013-05-24 CN CN201310196950.1A patent/CN103278305B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783994A (en) * | 1988-01-13 | 1988-11-15 | The Administrator Of The National Aeronautics And Space Administration | Pressure measuring probe |
| JPH02221837A (en) * | 1989-02-22 | 1990-09-04 | Mitsubishi Electric Corp | Intermittent blowout type wind tunnel testing device |
| US5644075A (en) * | 1995-04-07 | 1997-07-01 | European Transonic Windtunnel Gmbh | Wind tunnel model support with vibration detection balance and countervibration means |
| JP2004069330A (en) * | 2002-08-01 | 2004-03-04 | Mitsubishi Heavy Ind Ltd | Wind tunnel test model damping adapter and wind tunnel test model damping device |
Non-Patent Citations (2)
| Title |
|---|
| BALAKRISHNA S 等: "Design and Performance of an Active Sting Damper for the NASA Common Research Model", 《49TH AIAA AEROSPACE SCIENCES MEETING INCLUDING THE NEW HORIZONS FORUM AND AEROSPACE EXPOSITION》, 31 December 2011 (2011-12-31) * |
| 陈仁文 等: "基于压电智能结构的垂尾减振系统", 《力学学报》, vol. 41, no. 4, 31 July 2009 (2009-07-31), pages 603 - 608 * |
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| CN103487231A (en) * | 2013-09-24 | 2014-01-01 | 大连理工大学 | Active vibration abatement device of supporting rod type wind tunnel model |
| CN105258912A (en) * | 2015-11-13 | 2016-01-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-speed wind tunnel model test support device based on internal balance |
| CN105258912B (en) * | 2015-11-13 | 2018-03-02 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of low-speed wind tunnel model test support meanss based on internal balance |
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| CN105651480A (en) * | 2015-12-31 | 2016-06-08 | 空气动力学国家重点实验室 | Wind tunnel test tail support interference correction method and application thereof |
| CN105651480B (en) * | 2015-12-31 | 2017-10-27 | 空气动力学国家重点实验室 | A kind of wind tunnel test tail support interference modification method and its application |
| CN105527069A (en) * | 2016-01-04 | 2016-04-27 | 空气动力学国家重点实验室 | Transonic wind tunnel test supporting device, installation method and application thereof |
| CN105758611A (en) * | 2016-03-07 | 2016-07-13 | 中国空气动力研究与发展中心高速空气动力研究所 | Impact resisting device for wind-tunnel balance |
| CN106441786A (en) * | 2016-09-12 | 2017-02-22 | 哈尔滨工程大学 | Active vibration restraining actuating mechanism applied to wind tunnel model vibration decoupling control |
| RU2629696C1 (en) * | 2016-10-21 | 2017-08-31 | Федеральное государственное бюджетное учреждение науки Институт машиноведения им. А.А. Благонравова Российской академии наук (ИМАШ РАН) | Device for model position changing in working part of wind tunnel |
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| CN107314883A (en) * | 2017-06-23 | 2017-11-03 | 大连理工大学 | A kind of wind load of wind tunnel model vibration is from oscillation damping method |
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| CN107356402A (en) * | 2017-07-13 | 2017-11-17 | 南京航空航天大学 | A kind of wind-tunnel support sting that Active Vibration Control can be realized containing flexible hinge |
| CN107631856A (en) * | 2017-09-01 | 2018-01-26 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of dynamometry, pressure measurement, angular surveying, vibration suppression allpurpose model |
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| CN108195545B (en) * | 2017-12-05 | 2019-09-06 | 中国航天空气动力技术研究院 | Slender bodies aircraft elastic model vibration testing device |
| CN108362468A (en) * | 2018-05-25 | 2018-08-03 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of model vibration-repressing device that wind-tunnel supersonic speed starts and cut-offs |
| CN108362468B (en) * | 2018-05-25 | 2023-11-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Model vibration suppression device for supersonic starting and closing of wind tunnel |
| CN108844707A (en) * | 2018-09-04 | 2018-11-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind-tunnel routine test model support sting vibration absorber |
| CN108844707B (en) * | 2018-09-04 | 2024-04-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Tail strut vibration damper for wind tunnel conventional test model |
| CN109540455A (en) * | 2018-11-06 | 2019-03-29 | 中国航天空气动力技术研究院 | A kind of thin-walled model twin beams articulated structure and dynamic test method for supporting |
| CN110907128A (en) * | 2019-12-26 | 2020-03-24 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel model vibration suppression device and system |
| CN111366330A (en) * | 2020-03-30 | 2020-07-03 | 南京航空航天大学 | Wind tunnel tail strut structure suitable for active vibration reduction in low-temperature environment |
| CN111366330B (en) * | 2020-03-30 | 2021-03-23 | 南京航空航天大学 | Wind tunnel tail strut structure suitable for active vibration reduction in low-temperature environment |
| CN112067229A (en) * | 2020-09-14 | 2020-12-11 | 中国空气动力研究与发展中心 | Center-loaded large-size unidirectional force piezoelectric sensor |
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