CN110485267A - A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid - Google Patents
A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid Download PDFInfo
- Publication number
- CN110485267A CN110485267A CN201910831259.3A CN201910831259A CN110485267A CN 110485267 A CN110485267 A CN 110485267A CN 201910831259 A CN201910831259 A CN 201910831259A CN 110485267 A CN110485267 A CN 110485267A
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- shear thickening
- thickening liquid
- type self
- adhesion type
- fixedly connected
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- 230000008719 thickening Effects 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 11
- 241000132536 Cirsium Species 0.000 claims abstract description 20
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims description 2
- 230000001629 suppression Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 8
- 239000007787 solid Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of adhesion type self-tuning mass dampers and its application method based on shear thickening liquid, including sleeve, ball-screw and sealed compartment are equipped in the sleeve, the ball-screw includes mass block and lead screw, the mass block transmission connection is in the outside of lead screw, the lower end of the lead screw is fixedly connected with propeller, the propeller rotational is connected in sealed compartment, the lower end of the sleeve is fixedly connected with thistle board, the lower surface of the thistle board is fixedly connected with rubber pad, the present invention realizes the frequency self-tuning characteristic of tuned mass damper, the effectiveness in vibration suppression of damper can effectively be promoted, reduce the vibration of bridge cable.
Description
Technical field
The present invention relates to damper devices technical field, specifically a kind of adhesion type self-tuning matter based on shear thickening liquid
Measure damper and its application method.
Background technique
In existing civil engineering energy-obsorbing and damping device, tuned mass damper (TMD) due to its simple structure, cost at
This is low, easy to maintain, does not need extra power the advantages that supporting, in practical projects using more and more extensive, well subtract
Vibration effect has also obtained a large amount of engineering verifications.But common tuned mass damper only in specific frequency range have subtract
Vibration effect, deviateing this frequency range, then effectiveness in vibration suppression is bad.
Tuned mass damper (TMD) is initially used on the vibration damping of single-degree-of-freedom tall and slender structure, achieves good effect
Fruit.This is primarily due to the type structure its vibration characteristics based on a first order mode, therefore people are when using TMD vibration damping, only
Need for TMD intrinsic frequency to be adjusted to the fundamental frequency (intrinsic frequency) of structure.But for line structure (suspension cable,
Submarine cable, power transmission line etc.), structural bending rigidity very little, when being acted on by external loads, the type structure is easy to be swashed
Initiate high order mode.When TMD intrinsic frequency to be adjusted to specific frequency (such as single order) of the structure, the effectiveness in vibration suppression of TMD is not
It is ideal.Therefore, for the type structure, to use TMD to realize preferable control effect, then should realize that TMD is solid
There is the tunable of frequency.
The intrinsic frequency of TMD is combined by its own rigidity, quality to be determined.Traditional TMD uses constant rate spring and perseverance
Determine mass block, therefore its intrinsic frequency can not change.There is scholar using the intrinsic frequency of variable rate spring adjusting TMD, but its
Using variable rate spring can only be by being changed by the way of initially adjusting, therefore for the change width of TMD intrinsic frequency
Degree less, and is not easy to operate.
With the progress of control method, scholars are numerous and confused in such a way that active tunes, and change to the intrinsic frequency of TMD
Become, expands its vibration damping response range.But, these modes actively tuned are usually all to need external energy using intellectual material
Source input, increases economic cost and also increases difficulty to the later maintenance of damper.
Bridge in field of civil engineering refers generally to be erected in rivers,lakes and seas, makes traffic etc. that can smoothly pass through
Structures, for the transportation industry for adapting to Modern High-Speed development, bridge is also extended to across mountain stream, unfavorable geology or meets other friendships
It is logical to need and what is set up makes current more convenient and fast building, generally it is arranged above bridge to provide the pulling force effect of bridge
There is bridge drawstring.
However typically no setting tuned mass damper (TMD) in the bridge drawstring in existing field of civil engineering,
Therefore the bridge drawstring in existing field of civil engineering can generate biggish vibration in vehicle driving etc., to bring inconvenience.
Summary of the invention
The purpose of the present invention is to provide a kind of adhesion type self-tuning mass damper based on shear thickening liquid and its make
With method, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of adhesion type self-tuning mass damper based on shear thickening liquid, including sleeve, the sleeve is interior to be equipped with rolling
Ballscrew and sealed compartment, the ball-screw include mass block and lead screw, and the mass block transmission connection is in the outside of lead screw, institute
The lower end for stating lead screw is fixedly connected with propeller, and the propeller rotational is connected in sealed compartment, and the lower end of the sleeve is fixed
It is connected with thistle board, the lower surface of the thistle board is fixedly connected with rubber pad.
As a further solution of the present invention: the upper surface of the sleeve is arcwall face.
As a further solution of the present invention: the upper and lower side of the mass block passes through spring and sleeve respectively and sealed compartment is solid
Fixed connection.
As a further solution of the present invention: being fixedly connected with connecting rod between the lead screw and propeller.
As a further solution of the present invention: round hole is offered on the sealed compartment, the lateral wall of the connecting rod is solid
Surely it is connected with sealing ring, the sealing ring is rotatably connected in round hole.
As a further solution of the present invention: the sealed compartment is provided with shear thickening liquid.
As a further solution of the present invention: the thistle board is foam or rubber.
As a further solution of the present invention: the lower surface of the thistle board is arcwall face, the rubber pad and thistle board
Lower surface cooperation.
The specific steps of the adhesion type self-tuning mass damper working method based on shear thickening liquid:
Rubber pad is fixedly connected on bridge drawstring, and bridge drawstring causes the vibration of sealed compartment, the vibration of sealed compartment when vibrating
The dynamic reciprocating motion that can cause mass block along lead screw；
The reciprocating motion can cause propeller in the rotation in shear thickening liquid via the conduction of lead screw, due to cutting
Cutting thickening fluid plays the role of the linear movement of damping force and frictional force inhibition mass block to propeller.
Compared with prior art, the beneficial effects of the present invention are: the present invention is fixedly connected with lightweight by the lower end in sleeve
Plate, and it is fixedly connected with rubber pad in the lower surface of thistle board, convenient for device is fixedly connected on the drawstring of bridge；By
Setting propeller and shear thickening liquid in sealed compartment, due to the damping of shear thickening liquid when propeller is movable in shear thickening liquid
It is movable in shear thickening liquid that the effect of power and frictional force will will limit propeller；Since shear thickening liquid frictional force is with propeller
Velocity of rotation is different and changes, and directly affects the size of its rigidity；The change of rigidity results in the variation of damped frequency,
To realize damper frequency change with impact velocity it is adaptive；By rationally design, it can be achieved that the damper fundamental frequency with
External impact frequency is close, to play maximum effectiveness in vibration suppression.This adhesion type self-tuning quality resistance based on shear thickening liquid
Buddhist nun's device realizes the frequency self-tuning characteristic of tuned mass damper, can effectively promote the effectiveness in vibration suppression of damper, reduces bridge
The vibration of beam drag-line.
Detailed description of the invention
Fig. 1 is a kind of adhesion type self-tuning mass damper schematic diagram based on shear thickening liquid；
In figure: 1- sleeve, 2- mass block, 3- lead screw, 4- sealed compartment, 5- propeller, 6- thistle board, 7- rubber pad, 8- bullet
Spring, 9- connecting rod, 10- shear thickening liquid.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of adhesion type self-tuning mass damper based on shear thickening liquid and
Its application method, including sleeve 1, are equipped with ball-screw and sealed compartment 4 in sleeve 1, and ball-screw includes mass block 2 and lead screw 3,
Mass block 2 is sequentially connected in the outside of lead screw 3, and the lower end of lead screw 3 is fixedly connected with propeller 5, and propeller 5 is rotatably connected on close
In batten down 4, the lower end of sleeve 1 is fixedly connected with thistle board 6, and the lower surface of thistle board 6 is fixedly connected with rubber pad 7.
The upper surface of sleeve 1 is arcwall face.
The upper and lower side of mass block 2 passes through spring 8 respectively and is fixedly connected with sleeve 1 and sealed compartment 4, convenient for answering for mass block 2
Position movement.
Be fixedly connected with connecting rod 9 between lead screw 3 and propeller 5, the setting of connecting rod 9 convenient for lead screw 3 and propeller 5 it
Between connection.
Round hole is offered on sealed compartment 4, the lateral wall of connecting rod 9 is fixedly connected with sealing ring, sealing ring rotation connection
In round hole, sealing ring realizes the sealing effect between 4 round hole of connecting rod 9 and sealed compartment.
Sealed compartment 4 is provided with shear thickening liquid 10.
Thistle board 6 is foam or rubber.
The lower surface of thistle board 6 is arcwall face, the lower surface cooperation of rubber pad 7 and thistle board 6.
The reciprocating motion can cause propeller 5 in the rotation in shear thickening liquid 10 via the conduction of lead screw 3, by
There is damping force to propeller 5 in shear thickening liquid 10 and frictional force inhibits the linear movement of mass block 2
In the use of the present invention, rubber pad 7 is fixedly connected on bridge drawstring, rubber can be passed through when the vibration of bridge drawstring
Vibration is transmitted to sealed compartment 4 by rubber mat 7, thistle board 6, and so as to cause the vibration of sealed compartment 4, the vibration of sealed compartment 4 can cause matter
For gauge block 2 along the reciprocating motion of lead screw 3, which can cause propeller 5 in shear thickening via the conduction of lead screw 3
Rotation in liquid 10, due to the planform of 5 blade of propeller, propeller 5 can generate one and upward push away during rotating
Power, simultaneously because shear thickening liquid 10 plays the role of damping force and frictional force to propeller 5, thus inhibit the activity of propeller 5,
And then lead screw 3 is inhibited to rotate, to inhibit the linear movement of mass block 2, it is equivalent to and increases one to mass block 2 and inhibit its line
Property movement " equivalent spring ", to reduce vibration." equivalent spring " together, provides " etc. with spring 8 for damper system
Imitate rigidity ".
When the impact velocity suffered by the object increases (or frequency raising), object vibration amplitude (frequency) increases, due to inertia
Reason, can occur linear relative displacement between mass block and lead screw, what relative displacement was converted into propeller 5 is rotated in shear thickening
Rotation in liquid 10, cutting shearing thickening fluid 10 generate damping force, and according to 10 self-characteristic of shear thickening liquid, cutting speed is got over
Fastly, damping force is bigger, and " equivalent spring " rigidity is bigger, and damper overall structure " equivalent stiffness " is bigger, natural frequency of damper
It is bigger.That is, natural frequency of damper also increases with it, and the two variation tendency is consistent when external drive frequency increases.
Therefore, can be by way of rational design, the consistency of Lai Shixian driving frequency and natural frequency of damper tuning.
Meanwhile shear thickening liquid 10 shows very strong hardening characteristics in high speed shear, energy dissipation capacity is much higher than
Common viscous daming material.Therefore, the axial stroke for reducing mass block can make damper to lightweight, miniaturization.
Adjustment to airscrew diameter, roughness, propeller 5 and 4 gap size of sealed compartment etc., thus it is possible to vary damper energy dissipation capacity with
And frequency tuning performance.
Although this specification is described in terms of embodiments, but not each embodiment only includes an independent skill
Art scheme, this description of the specification is merely for the sake of clarity, and those skilled in the art should be using specification as one
A entirety, the technical solutions in the various embodiments may also be suitably combined, formed it will be appreciated by those skilled in the art that other
Embodiment.
Therefore the foregoing is merely the preferred embodiments of the application, not are used to limit the practical range of the application；It is i.e. all according to
The various equivalents that claims hereof range is done are the protection scope of the claim of this application.
Claims (9)
1. a kind of adhesion type self-tuning mass damper based on shear thickening liquid, it is characterised in that: described including sleeve (1)
Ball-screw and sealed compartment (4) are equipped in sleeve (1), the ball-screw includes mass block (2) and lead screw (3), the quality
Block (2) is sequentially connected in the outside of lead screw (3), and the lower end of the lead screw (3) is fixedly connected with propeller (5), the propeller
(5) it is rotatably connected in sealed compartment (4), the lower end of the sleeve (1) is fixedly connected with thistle board (6), the thistle board (6)
Lower surface is fixedly connected with rubber pad (7).
2. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 1, feature exist
In the upper surface of the sleeve (1) is arcwall face.
3. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 1, feature exist
In the upper and lower side of the mass block (2) passes through spring (8) respectively and is fixedly connected with sleeve (1) and sealed compartment (4).
4. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 1, feature exist
In being fixedly connected with connecting rod (9) between the lead screw (3) and propeller (5).
5. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 4, feature exist
In offering round hole on the sealed compartment (4), the lateral wall of the connecting rod (9) is fixedly connected with sealing ring, the sealing
Circle is rotatably connected in round hole.
6. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 1, feature exist
In the sealed compartment (4) is provided with shear thickening liquid (10).
7. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 1, feature exist
In the thistle board (6) is foam or rubber.
8. a kind of adhesion type self-tuning mass damper based on shear thickening liquid according to claim 1, feature exist
In the lower surface of the thistle board (6) is arcwall face, the lower surface cooperation of the rubber pad (7) and thistle board (6).
9. a kind of application method of the adhesion type self-tuning mass damper based on shear thickening liquid, it is characterised in that: the use
The specific steps of method are as follows:
Rubber pad (7) is fixedly connected on bridge drawstring, and bridge drawstring causes the vibration of sealed compartment (4), sealed compartment (4) when vibrating
Vibration mass block (2) can be caused along the reciprocating motion of lead screw (3)；
The reciprocating motion can cause propeller (5) in the rotation in shear thickening liquid (10) via the conduction of lead screw (3),
Since shear thickening liquid (10) plays the role of the linear movement of damping force and frictional force inhibition mass block (2) to propeller (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831259.3A CN110485267A (en) | 2019-09-03 | 2019-09-03 | A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910831259.3A CN110485267A (en) | 2019-09-03 | 2019-09-03 | A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155672A (en) * | 2020-01-10 | 2020-05-15 | 中国电子工程设计院有限公司 | Self-adaptive tuned mass damper based on shear thickening liquid |
| CN115709295A (en) * | 2022-12-08 | 2023-02-24 | 哈尔滨理工大学 | Self-adaptive vibration-damping boring bar filled with shear thickening fluid |
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| CN111155672A (en) * | 2020-01-10 | 2020-05-15 | 中国电子工程设计院有限公司 | Self-adaptive tuned mass damper based on shear thickening liquid |
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