CN107340111A - Rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration - Google Patents
Rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration Download PDFInfo
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- CN107340111A CN107340111A CN201710548540.7A CN201710548540A CN107340111A CN 107340111 A CN107340111 A CN 107340111A CN 201710548540 A CN201710548540 A CN 201710548540A CN 107340111 A CN107340111 A CN 107340111A
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- cylindrical shell
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- belt wheel
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
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Abstract
The present invention relates to composite structure vibration test technology field, provide a kind of rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration, including remote drive, cylindrical shell clamping device, launch exciting bank, laser circumference scanning means and laser vibration measurer, laser circumference scanning means is used cooperatively with laser vibration measurer, by changing laser optical path, the vibration information hit to cylindrical shell after shaking is acquired, laser circumference scanning means can be with axial feed, and can be with hollow shaft, belt wheel rotates jointly, so as to realize to cylindrical shell difference, the vibration information of different cross section is acquired.The installation cost of the present invention is low, and long lifespan, test requirements document is few, is adapted to the whirling vibration situation of most Composite Cylindrical Shell constant wave vibration tests, can take multiple measurements, reduce test error.
Description
Technical field
The present invention relates to composite structure vibration test technology field, and in particular to one kind can be used in composite circle
The rotating vibration test platform of post shell constant wave vibration test.
Background technology
Composite Cylindrical Shell has the characteristics that light weight, corrosion-resistant, insulating properties, at present just relative to metal cylindrical shell
Being increasingly being applied to, Aero-Space, ship, ocean engineering, petrochemical industry, weapons manufacture and nuclear industry etc. are important
Field.Although Composite Cylindrical Shell has very big strength and stiffness, but vibration problem is also very prominent, is being rotated about its center axis
During, if simultaneously by external drive in the case of, constant wave vibration will be produced.Particularly Thin-Wall Cylindrical Shells, by compared with
During strong excitation, large-amplitude oscillation will be produced, this can make it easier to destroy.So constant wave vibration survey is carried out to cylindrical shell
Examination is just particularly important.
At present, people carry out the actually rare of constant wave vibration Test And Research Work to Composite Cylindrical Shell, and it is main former
Because being due to that excitation method under rotation status and vibration measuring means are difficult to solve.Conventional current vortex and electromagnetic exciting, often
The excitation (because composite material casing is difficult to produce vortex or electromagnetic induction effect) of metal shell is only applicable to, and to large-scale turn
Dynamic metal-back exciting then needs very big electromagnetic field or eddy current effect, and it is less that the above method is generally only applicable to size
Metal cylindrical shell.In addition, the rotating vibration test platform of people's design in the past, generally use current vortex sensor, slip ring draw electric-type
Strain transducer or acceleration transducer carry out vibration measurement, and aforesaid way is collected for cylindrical shell by the vibration information after shaking is hit
Not accurate enough, measuring point can not change position in housing rotary course, cause constant wave vibration result of the test inadequate once fixing
Comprehensively, and due to the influence of sensor additional mass, the accuracy that constant wave vibration is tested also is influenceed to a certain extent.
Vibration measurement with laser is a kind of emerging vibration test technology, can be quick, accurate by whole audience Scan laser measure instrument
Really obtain the Mode Shape of almost plane structure.But for Composite Cylindrical Shell structure, this whole audience scanning type laser
Vibration measuring can not also meet test request.In view of the deficienciess of the prior art, the present invention, which provides one kind, is used for composite cylinder
The rotating vibration test platform of shell constant wave vibration test
The content of the invention
In view of the deficienciess of the prior art, present invention offer is a kind of to be used for what Composite Cylindrical Shell constant wave vibration was tested
Rotating vibration test platform.
Concrete technical scheme is as follows：
For the rotating vibration test platform of Composite Cylindrical Shell constant wave vibration test, including remote drive, circle
Post shell clamping device, ejection exciting bank, laser circumference scanning means and laser vibration measurer；The laser circumference scanning means with
Laser vibration measurer is used cooperatively, and by changing laser optical path, the vibration information hit to cylindrical shell after shaking is acquired, the laser
Circumferential scanning device can be with axial feed, and can be rotated jointly with hollow shaft, belt wheel, realizes to cylindrical shell difference, difference
The vibration information in section is acquired；
The remote drive includes double-axis motor, and double-axis motor both ends shaft passes through axle and band respectively
Wheel one, belt wheel two connect；The cylindrical shell clamping device is arranged in hollow shaft, and the hollow shaft is fixed by bearing block, hollow
Axle one end is connected with belt wheel three, and the other end is connected with belt wheel four；The belt wheel one is connected with belt wheel four by conveyer belt one, belt wheel
Two are connected with belt wheel three by conveyer belt two；The ejection exciting bank is arranged on the side of cylindrical shell clamping device；It is described to swash
Flash ranging Vibration Meter is fixed on the outside of belt wheel four, its center and the hollow shaft central alignment；The ejection exciting bank is arranged on
On testing stand table top, positioned at the side of cylindrical shell.
Double-axis motor both ends shaft is connected with axle by shaft coupling, and the axle is with belt wheel one, belt wheel two using flat
Key connection, hollow shaft are connected with belt wheel three, belt wheel four using flat key.
Dovetail groove is set on the table top of the ejection exciting bank bottom, and rotational handle, ejection exciting bank can be along dovetail groove
Guide rail is axially moved.
The ejection exciting bank, which can be launched, hits the hand hammer that shakes, and hits its cylindrical shell to high speed rotation and shakes, and it is big to hit power of shaking
Small adjustable and control.
Rotating vibration test platform application method for the test of Composite Cylindrical Shell constant wave vibration is as follows：
(1) according to the physical dimension of cylindrical shell, the position of cylindrical shell clamping device is adjusted, the stable clamping of cylindrical shell is being tried
Test on platform；
(2) start laser vibration measurer, laser is irradiated to through hollow shaft on reflective mirror, reflex to afterwards on cylindrical shell surface
Certain point；
(3) ball screw arrangement of laser scanning device rear end is adjusted, is located at the reflective mirror installed in the device front end
Suitable position on axial direction, so that laser is through the tested point on mirror reflection to cylindrical shell surface, reflective mirror and cylindrical shell
Can synchronous rotary so that laser reflection point can follow measurement point realize measurement；
(4) start motor, cylindrical shell is driven by the transmission system of testing stand through clamping device, rotate at a high speed；
(5) position of regulation ejection exciting bank, it is determined that suitable hit is shaken a little；
(6) the pull bar fixing device on regulation ejection exciting bank, it is determined that suitably hitting power size of shaking；
(7) pull bar of ejection exciting bank is pulled to switch on power to fixed position, ejection exciting bank is entered cylindrical shell
Row, which is hit, to shake；
(8) laser vibration measurer will collect information and be transmitted to analyzer analysis result；
(9) repeat step (6)-(8), are repeatedly tested, and reduce test error；
(10) start the motor installed in circumferential scanning device reflective mirror rear end, reflective mirror is realized that differential turns with cylindrical shell
It is dynamic, and by the ball screw arrangement of the device rear end, change the axial location of reflective mirror, so as to survey within the specific limits
Measure the Vibration Condition in any one section of cylindrical shell.
This method have the advantage that：
(1) cylindrical shell Special clamping device, the cylindrical shell of the different-diameter energy during experiment can be made within the specific limits
Stable effective clamping is accessed, meanwhile, outside clamps while being supported to cylindrical shell inboard, can avoid to cylinder
Shell damages.Traditional cylindrical shell clamping device can not typically adjust clamping diameter size or can be to the surface of cylindrical shell
Certain destruction is caused, the present apparatus can effectively overcome the two shortcomings, realize effective clamping stable to cylindrical shell.
(2) ejection exciting bank can control the size tested hit power of shaking every time by switching device in the present invention,
So as to repeat to test, multi-group data is measured, to reduce test error.The present invention can change the position hit and shaken, and high speed is revolved
The diverse location of the cylindrical shell turned hit then analyze data of shaking, and measurement result is had more generality, is designed with hits in addition
Shake hand hammer fixing lock, can effectively prevent to cause cylindrical shell secondary hit to shake.
(3) circumferential scanning device can accurately and rapidly measure certain on cylindrical shell by being used cooperatively with laser vibration measurer
Individual point or the vibration in some section, and can easily change measurement position, the position of reflective mirror can also adjust, and make survey
The position of amount point can be changed according to the requirement of experimenter, similarly reduce the contingency of result of the test..
(4) installation cost of the invention is low, and long lifespan, test requirements document is few, is adapted to most Composite Cylindrical Shell rows
The whirling vibration situation of ripple vibration-testing.It can take multiple measurements, reduce test error.
Brief description of the drawings
Fig. 1 is the front view of rotating vibration test platform of the present invention；
Fig. 2 is the ejection exciting bank top view of rotating vibration test platform of the present invention；
Fig. 3 is the laser circumference scanning means top view of rotating vibration test platform of the present invention；
Fig. 4 is the shaft side figure of elastic excitation device of the present invention；
Fig. 5 be fixing composite material cylindrical shell of the present invention after rotating vibration test platform shaft side figure；
Fig. 6 is the pull bar fixing device schematic diagram of present invention ejection exciting bank.
In figure：1- belt wheels one, 2- shaft couplings, 3- double-axis motors, 4- conveyer belts one, 5- belt wheels two, 6- laser vibration measurers,
7- belt wheels three, 8- conveyer belts two, 9- cylindrical shell clamping devices, 10- ejection exciting banks, 11- pull bar fixing devices, 12- bearings
Seat, 13- belt wheels four, 14- laser circumference scanning means, 15- handles, 16- pull bars, 17- hit the force control device that shakes, 18- hit shake it is small
Hammer, 19- pins, 20- hit hand hammer fixing lock of shaking, 21- gears, 22- reflective mirrors, 23- reducing motors, 24- ball-screws.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.Fig. 1 is the front view of rotating vibration test platform of the present invention；Figure
2 be the ejection exciting bank top view of rotating vibration test platform of the present invention；Fig. 3 is that the laser of rotating vibration test platform of the present invention is justified
All scanning means top views；Fig. 4 is the shaft side figure of elastic excitation device of the present invention；Fig. 5 is fixing composite material cylinder of the present invention
The shaft side figure of rotating vibration test platform after shell；Fig. 6 is the pull bar fixing device schematic diagram of present invention ejection exciting bank.
As illustrated, the rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration, including remote biography
Dynamic device, cylindrical shell clamping device 9, ejection exciting bank 10, laser circumference scanning means 14 and laser vibration measurer 6；Laser is justified
All scanning means 14 are used cooperatively with laser vibration measurer 6, and by changing laser optical path, the vibration information hit to cylindrical shell after shaking enters
Row collection, laser circumference scanning means 14 can jointly be rotated, be realized to cylindrical shell with axial feed with hollow shaft, belt wheel
Difference, the vibration information of different cross section are acquired；
Remote drive includes double-axis motor 3, the both ends shaft of double-axis motor 3 respectively by axle and belt wheel 1,
Belt wheel 25 connects；The cylindrical shell clamping device 9 is arranged in hollow shaft, and the hollow shaft is fixed by bearing block, hollow shaft one
End is connected with belt wheel 37, and the other end is connected with belt wheel 4 13；The belt wheel 1 is connected with belt wheel 4 13 by conveyer belt 1,
Belt wheel 25 is connected with belt wheel 37 by conveyer belt 28；The ejection exciting bank 10 is arranged on testing stand table top, positioned at circle
The side of post shell；The laser vibration measurer 6 is fixed on the outside of belt wheel 4 13, its center and the hollow shaft central alignment；Institute
Laser circumference scanning means 14 is stated to be fixed on the side of hollow shaft upper belt-wheel 37.
The both ends shaft of double-axis motor 3 is connected with axle by shaft coupling 2, and the axle is with belt wheel 1, belt wheel 25 using flat
Key connection, hollow shaft are connected with belt wheel 37, belt wheel 4 13 using flat key.
Dovetail groove is set on the ejection bottom table top of exciting bank 10, and rotational handle 15, ejection exciting bank 10 can be along dovetail
Groove guide rail is axially moved.
Ejection exciting bank 10, which can be launched, hits the hand hammer 18 that shakes, and hits its cylindrical shell to high speed rotation and shakes, and it is big to hit power of shaking
Small adjustable and control.
Rotating vibration test platform application method for the test of Composite Cylindrical Shell constant wave vibration is as follows：
(1) according to the physical dimension of cylindrical shell, the position of adjustment cylindrical shell clamping device 9, the stable clamping of cylindrical shell is existed
On testing stand；
(2) start laser vibration measurer 6, laser is irradiated to through hollow shaft on reflective mirror 22, reflex to cylindrical shell table afterwards
Certain point on face；
(3) structure of ball-screw 24 of the rear end of laser circumference scanning means 14 is adjusted, is made installed in the anti-of the device front end
Light microscopic 22 is positioned at axially upper suitable position, so that laser reflexes to tested point on cylindrical shell surface through reflective mirror 22, because
Whole laser scanning device is fixed in hollow shaft, thus reflective mirror 22 and cylindrical shell can synchronous rotary so that laser is anti-
Exit point can follow measurement point to realize measurement；
(4) start double-axis motor 3, cylindrical shell is driven by the transmission system of testing stand through cylindrical shell clamping device 9,
Rotate at a high speed；
(5) position of regulation ejection exciting bank 10, it is determined that suitable hit is shaken a little；
(6) the pull bar fixing device 11 on regulation ejection exciting bank 10, it is determined that suitably hitting power size of shaking；
(7) pull the pull bar 16 of ejection exciting bank 10 to arrive fixed position, switch on power, make ejection exciting bank 10 to circle
Post shell hit shaking；
(8) laser vibration measurer 6 will collect information and be transmitted to analyzer analysis result；
(9) repeat step (6)-(8), are repeatedly tested, and reduce test error；
(10) start the motor installed in the rear end of reflective mirror 22 of laser circumference scanning means 14, reflective mirror 22 and circle can be made
Post shell realizes that differential rotates, and by the structure of ball-screw 24 of the device rear end, changes the axial location of reflective mirror 22, from
And the Vibration Condition in any one section of cylindrical shell can be measured within the specific limits.
Claims (5)
1. the rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration, it is characterised in that：Passed including remote
Dynamic device, cylindrical shell clamping device, ejection exciting bank, laser circumference scanning means and laser vibration measurer；The laser circumference
Scanning means is used cooperatively with laser vibration measurer, and by changing laser optical path, the vibration information hit to cylindrical shell after shaking is adopted
Collection, the laser circumference scanning means can be with axial feed, and can be rotated jointly with hollow shaft, belt wheel, realizes to cylindrical shell
Difference, the vibration information of different cross section are acquired；
The remote drive includes double-axis motor, and double-axis motor both ends shaft passes through axle and belt wheel respectively
First, belt wheel two connects；The cylindrical shell clamping device is arranged in hollow shaft, and the hollow shaft is fixed by bearing block, hollow shaft
One end is connected with belt wheel three, and the other end is connected with belt wheel four；The belt wheel one is connected with belt wheel four by conveyer belt one, belt wheel two
It is connected with belt wheel three by conveyer belt two；The ejection exciting bank is arranged on the side of cylindrical shell clamping device；The laser
Vialog is fixed on the outside of belt wheel four, its center and the hollow shaft central alignment；The ejection exciting bank is arranged on examination
Test on platform table top, positioned at the side of cylindrical shell.
2. the rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration as claimed in claim 1, its feature
It is：Double-axis motor both ends shaft is connected with axle by shaft coupling, and the axle is connected with belt wheel one, belt wheel two using flat key
Connect, hollow shaft is connected with belt wheel three, belt wheel four using flat key.
3. the rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration as claimed in claim 1, its feature
It is：Dovetail groove is set on the table top of the ejection exciting bank bottom, and rotational handle, ejection exciting bank can be along dovetail groove guide rail
It is axially moved.
4. the rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration as claimed in claim 1, its feature
It is：The ejection exciting bank, which can be launched, hits the hand hammer that shakes, and hits its cylindrical shell to high speed rotation and shakes, and hits the big I of power of shaking
Regulation and control.
5. the rotating vibration test platform application method for the test of Composite Cylindrical Shell constant wave vibration as claimed in claim 1
It is as follows：
(1) according to the physical dimension of cylindrical shell, the position of adjustment cylindrical shell clamping device, by the stable clamping of cylindrical shell in testing stand
On；
(2) start laser vibration measurer, laser is irradiated to through hollow shaft on reflective mirror, reflex to certain on cylindrical shell surface afterwards
Point；
(3) ball screw arrangement of laser scanning device rear end is adjusted, makes the reflective mirror installed in the device front end positioned at axially
Upper suitable position, so that laser can be same with cylindrical shell through the tested point on mirror reflection to cylindrical shell surface, reflective mirror
Step rotation, so that laser reflection point can follow measurement point to realize measurement；
(4) start motor, cylindrical shell is driven by the transmission system of testing stand through clamping device, rotate at a high speed；
(5) position of regulation ejection exciting bank, it is determined that suitable hit is shaken a little；
(6) the pull bar fixing device on regulation ejection exciting bank, it is determined that suitably hitting power size of shaking；
(7) pull bar of ejection exciting bank is pulled to switch on power to fixed position, ejection exciting bank is hit cylindrical shell
Shake；
(8) laser vibration measurer will collect information and be transmitted to analyzer analysis result；
(9) repeat step (6)-(8), are repeatedly tested, and reduce test error；
(10) start the motor installed in circumferential scanning device reflective mirror rear end, reflective mirror is realized that differential rotates with cylindrical shell,
And by the ball screw arrangement of the device rear end, change the axial location of reflective mirror, so as to measure within the specific limits
The Vibration Condition in any one section of cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710548540.7A CN107340111B (en) | 2017-07-07 | 2017-07-07 | Rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710548540.7A CN107340111B (en) | 2017-07-07 | 2017-07-07 | Rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration |
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| CN107340111A true CN107340111A (en) | 2017-11-10 |
| CN107340111B CN107340111B (en) | 2019-04-05 |
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| CN201710548540.7A Active CN107340111B (en) | 2017-07-07 | 2017-07-07 | Rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029890A (en) * | 2018-08-28 | 2018-12-18 | 东北大学 | Consider uniform and temperature gradient fiber-reinforced composite shell rotating vibration test platform |
| CN109186742A (en) * | 2018-09-30 | 2019-01-11 | 华南理工大学 | A kind of the cylindrical annular shell vibration detection control device and method of view-based access control model |
| WO2019233111A1 (en) * | 2018-06-07 | 2019-12-12 | 东北大学 | Detection device for composite wing dynamic characteristics and damage of unmanned aerial vehicle under wind-sand and heat environments |
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| CN103528667A (en) * | 2013-10-23 | 2014-01-22 | 东北大学 | Laser scanning based cylindrical shell modal shape testing device and method |
| WO2014021564A1 (en) * | 2012-08-01 | 2014-02-06 | 한국과학기술원 | Laser ultrasonic imaging method and laser ultrasonic imaging device for rotational structure |
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| US5450748A (en) * | 1994-02-28 | 1995-09-19 | Maxwell Dynamometer Systems, Inc. | Multiple function chassis dynamometer and method |
| WO2014021564A1 (en) * | 2012-08-01 | 2014-02-06 | 한국과학기술원 | Laser ultrasonic imaging method and laser ultrasonic imaging device for rotational structure |
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| CN105798874A (en) * | 2016-05-25 | 2016-07-27 | 刘明月 | New energy automobile hub grabbing industrial robot |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019233111A1 (en) * | 2018-06-07 | 2019-12-12 | 东北大学 | Detection device for composite wing dynamic characteristics and damage of unmanned aerial vehicle under wind-sand and heat environments |
| CN109029890A (en) * | 2018-08-28 | 2018-12-18 | 东北大学 | Consider uniform and temperature gradient fiber-reinforced composite shell rotating vibration test platform |
| CN109186742A (en) * | 2018-09-30 | 2019-01-11 | 华南理工大学 | A kind of the cylindrical annular shell vibration detection control device and method of view-based access control model |
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| CN107340111B (en) | 2019-04-05 |
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