CN109404463A - Particle energy-consumption damper based on Arius state contact stress network - Google Patents
Particle energy-consumption damper based on Arius state contact stress network Download PDFInfo
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- CN109404463A CN109404463A CN201811549805.6A CN201811549805A CN109404463A CN 109404463 A CN109404463 A CN 109404463A CN 201811549805 A CN201811549805 A CN 201811549805A CN 109404463 A CN109404463 A CN 109404463A
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- damped
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- 239000002245 particle Substances 0.000 title claims abstract description 109
- 238000005265 energy consumption Methods 0.000 title claims abstract description 38
- 241001276404 Arius Species 0.000 title claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000012546 transfer Methods 0.000 claims abstract description 6
- 238000000518 rheometry Methods 0.000 claims abstract description 5
- 239000011257 shell material Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 11
- 230000035945 sensitivity Effects 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000531 Co alloy Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 3
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
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- 238000013016 damping Methods 0.000 abstract description 24
- 230000007246 mechanism Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 238000009527 percussion Methods 0.000 abstract description 3
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/01—Vibration-dampers; Shock-absorbers using friction between loose particles, e.g. sand
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of particle energy-consumption dampers based on Arius state contact stress network, including the receiving shell in the vibration transfer path for being mounted on structure to be damped, and if be built in the holding shell it is intracorporal formed particle media contact stress network dried particle；It can cause destructing, rheology and the reconstruct of the particle media contact stress network under the action of vibration, be decayed with dissipation energy and vibrated.This programme to reach reliable vibration damping target, and has preferable adaptability by introducing the dynamics state change mechanism of particle media in the structure design of drop percussion mechanism.
Description
Technical field
The present invention relates to antivibration areas, and in particular to a kind of particle energy consumption resistance based on Arius state contact stress network
Buddhist nun's device.
Background technique
In the prior art, in civilian industry field and war industry field, most products performance is close with damping technology
Cut phase is closed, and the research for how effectively carrying out vibration control is industrially particularly important.
Currently, associated damper has different structure form, it is most common to have viscoelastic damper, fluid linking damper etc.；Its
In, viscoelastic damper is by generating shearing lag return deformation, and the energy for the input that dissipates is very sensitive to the variation of temperature, effectively
Operating temperature range need to need its operating ambient temperature to take thermal control measure at -30 DEG C~120 DEG C；Fluid linking damper is benefit
It is acted on the viscid energy consumption of viscous liquid damping material and dissipates the remaining kinetic energy during mechanism kinematic, but viscous liquid hinders
Damping material needs to be sealed in rack under vacuum conditions, improves processing cost, and when operating temperature be increased to 80 DEG C with
When upper fluid linking damper at work there is the danger of leakage (once fluid linking damper leak, damping characteristic can be lost rapidly,
It must replace).
In view of this, it would be highly desirable to optimization is improved for existing damper product, to overcome above-mentioned applicable band width to have
Limit and the not high defect of reliability.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of particle energy consumption damping based on Arius state contact stress network
Device, by introducing the dynamics state change mechanism of particle media in the structure design of drop percussion mechanism, to reach reliable
Vibration damping target, and have preferable adaptability.
Particle energy-consumption damper provided by the invention based on Arius state contact stress network, including for being mounted on wait subtract
Receiving shell in the vibration transfer path for structure of shaking, and it is built in the intracorporal formation particle media contact stress of the holding shell
If the dried particle of network；Can cause under the action of the vibration destructing of the particle media contact stress network, rheology and
Reconstruct is decayed with dissipation energy and is vibrated.
Preferably, the receiving shell is fixedly mounted at the maximum displacement of the structure to be damped or maximum mode is clever
Sensitivity position.
Preferably, being built in the intracorporal several particles of the holding shell is configured that the frequency of the vibration close to 1 rank
When modal frequency, particle energy-consumption damper installation site is at 1 rank modal vibration maximum displacement of structure to be damped, and the particle is situated between
Matter becomes fluidised form-collision stream from fluidised form-non-collision circulation；Alternatively, when the frequency of the vibration is close to 2 rank modal frequency, particle
Energy-consumption damper installation site is at 2 rank modal point of structure to be damped, and the particle media becomes flowing from fluidised form-non-collision circulation
State-shearing；Alternatively, particle energy-consumption damper installation site is wait subtract when the vibration frequency is close to remaining high order mode frequency
It shakes at the maximum displacement of the structural modal vibration shape, the particle media contact stress network system deconstructs completely；Alternatively, the vibration frequency
When rate is far from modal frequency, particle energy-consumption damper installation site is structural attachments to be damped or stress raiser, the grain
Sub- medium becomes class solid-quasi-static stream from fluidised form-non-collision circulation.
Preferably, it is the ellipse of 0.001~30mm that the particle, which is sphere, the length shaft length of 0.001~30mm of diameter,
Sphere, side length are the polyhedron of 0.001~30mm rule or the irregular polyhedrons that side length is 0.001~30mm；The particle
Use material density for the metal of 0.1~30g/cm3, nonmetallic or polymer composite.
Preferably, the wall thickness for accommodating shell is 0.01~30mm；It is described accommodate shell inner surface be cylindrical body or
Polyhedron；It is described accommodate shell material be magnesium alloy, aluminium alloy, titanium alloy, ferroalloy, copper alloy, nickel alloy, metal,
Multicomponent alloy in manganese alloy, cobalt alloy or tungsten alloy or above-mentioned alloy is made.
Preferably, the surface configuration of the inner surface for accommodating shell and the particle are as follows: the mantle friction factor is 0.01
~0.99, surface recovery coefficient is 0.01~1.
Preferably, the receiving housing cavity is divided into multiple isolated chambers, and filling is identical in each isolated chambers
And/or the particle of different characteristic, wherein the feature is the material and shape and size of the particle；The particle is filled out
Filling rate is 10%~100%.
Preferably, the fixed form accommodated between shell and structure to be damped be is threadedly coupled, is keyed, type face company
It connects, swelling connection, pin connection, riveting, welding, bonding or interference connection.
Compared with prior art, the present invention proposes above-mentioned particle energy-consumption damper scheme in another way, specifically will
The dynamics state change mechanism of particle media is introduced into the structure design of drop percussion mechanism, is built-in with the receiving shell of particle
It is mounted in the vibration transfer path of structure to be damped, if dried particle forms particle media contact stress network；When impact occurs,
It can cause destructing, rheology and the reconstruct of particle media contact stress network under the action of vibration, be decayed with dissipation energy and vibrated,
To be reliably achieved the vibration damping of mechanical system.Meanwhile particIe system has more wide in range alternative feature, further mentions
High applicable frequency bandwidth.
Detailed description of the invention
Fig. 1 is the assembly relation schematic diagram of particle energy-consumption damper described in specific embodiment；
Fig. 2 a, 2b, 2c and 2d show Modal sensitivity maximum position using beam model as analysis foundation respectively；
Fig. 3 is to increase the effectiveness in vibration suppression of damper in 1 rank mode corresponding position of structure to be damped；
Fig. 4 is to increase the effectiveness in vibration suppression of damper in 2 rank mode corresponding position of structure to be damped；
Fig. 5 is to increase the effectiveness in vibration suppression of damper in structure high order mode to be damped corresponding position；
Fig. 6 is to increase the effectiveness in vibration suppression of damper in structure nonmodal to be damped corresponding position.
In figure:
Structure 1 to be damped accommodates shell 2, particle 2-2.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
The particle energy-consumption damper based on Arius state contact stress network provided using present embodiment comprising be used for
The receiving shell 2 being mounted in the vibration transfer path of structure 1 to be damped, and the formation particle being built in the receiving shell 2
If the dried particle of media contact Stress network；When impact occurs, above-mentioned particle media contact can be caused to answer under the action of vibration
Destructing, rheology and the reconstruct of power network, so that the Arius state damping effect of class viscous liquid or class collisional damping is generated, to dissipate
Energy attenuation vibration.The particle energy-consumption damper can be widely applied to different mechanical structures, such as, but not limited to: aerospace,
The mechanical structures such as high-end ship, weapons, the siding of rail traffic relevant device, frame, pedestal.
Without loss of generality, we are described in detail using structure to be damped 1 shown in Fig. 1 as description main body in present embodiment
Particle energy-consumption damper described in case.It should be appreciated that the concrete function structure of structure 1 to be damped, claimed for the application
Particle energy-consumption damper does not constitute substantive limitation.
Referring to Figure 1, the figure shows the assembly relation schematic diagrames of particle energy-consumption damper described in present embodiment.
As shown, the receiving shell 2 in 1 vibration transfer path of structure to be damped is mounted on, wherein being built-in with can form
If the dried particle 2-2 namely particle media of particle media contact stress network.It should be noted that particulate material has simultaneously
The material forms of solid and characteristics of liquids, under the action of vibrational excitation, the dynamics state of particIe system can be changed into resistance
Fill in four kinds of state, quasi- stationary stream state, inertia fluidised form, elastic fluidised form states, correspondingly, the particIe system contact stress network that particle is constituted
Also different shape is shown.When particIe system is when blocking state, quasi- stationary stream state and elastic fluidised form, particIe system contact stress network
It is larger, and it is then smaller in inertia fluidised form.Particle media dynamics state from quick circulation become flowing at a slow speed with it is quasi-static
When stream, the number of weak contact stress network is significantly reduced, and strong contact Stress network number obviously increases, and at the same time, particle is situated between
Flowing velocity and contact stress the network destructing of matter and the speed of reconstruct then obviously slow down.
Particle media contact stress network is from being stabilized to class I liquid I flow process of the fluidised form to reconstruct, as Arius state stress
Network system.It is vibrating that before arriving, particle is not arranged according to certain rule and accommodates in shell 2, at this time particle media
Contact stress net structure is stablized, and apparent tree is presented, when particIe system is activated, the solid property quilt of particle
It destroys, particle media contact stress network starts avalanche under the action of external drive, generates flowing and alternation, stress net at this time
There is turbulent chaos phenomenon, generate class viscous damper/class impact damper damping effect in network fracture, reconstruct.Reach as a result,
Treat the effect that vibration-proof structure plays vibration damping.Using this programme, on the basis of not changing original structure design, it can be ensured that structure
Stability.
In order to obtain better damping efficiency, it may be selected at the maximum displacement of structure to be damped or maximum mode be sensitive
It spends position and aforementioned receiving shell 2 is installed, to play the damping effect of particle energy-consumption damper to the maximum extent.Here, mechanical
After structure is activated, due to energized position or the difference of part constraint condition, the different location Vibration Condition meeting of mechanical structure
It having differences, the Oscillation Amplitude of structure different location is different, wherein the displacement of structural vibration is bigger, and it is bigger to represent oscillation intensity,
" at maximum displacement " refers at oscillation intensity maximum position, and the particle energy-consumption damper that this programme provides is mounted on oscillation intensity most
Big position, damping are the most obvious.In addition, can be obtained for having designed determining structure to be damped by model analysis
It must check the characteristics of mode of structure, the function of the different vibration shapes distribution of description scheme is Modal sensitivity function, wherein mode
The highest node location of sensitivity is " maximum mode sensitivity position ", relatively weak at this, is easiest in use
Vibration or fatigue rupture, the particle energy-consumption damper that this programme provides are mountable in the highest position of Modal sensitivity, damping effect
Fruit is the most obvious.
Fig. 2 a, 2b, 2c and 2d are referred to, Modal sensitivity dominant bit is respectively illustrated using beam model as analysis foundation
It sets.Wherein, Fig. 2 a shows 1 rank Modal sensitivity maximum position, and Fig. 2 b shows 2 rank Modal sensitivity maximum positions, Fig. 2 c
High order mode position is shown, Fig. 2 d shows nonmodal position.
In addition, through analyze compare Parameters variation when energy dissipation coefficient changing rule, it was determined that Fe coatings
Main two parameters of material and partial size for considering particle.Wherein, the particle is sphere, the major and minor axis of 0.001~30mm of diameter
Length is that the spheroid of 0.001~30mm, the polyhedron that side length is 0.001~30mm rule or side length are 0.001~30mm
Irregular polyhedrons；The particle uses material density for the metal of 0.1~30g/cm3, nonmetallic or macromolecule composite wood
Material.Wherein, the wall thickness for accommodating shell is 0.01~30mm；The inner surface for accommodating shell is cylindrical body or polyhedron；
It is described accommodate shell material be magnesium alloy, aluminium alloy, titanium alloy, ferroalloy, copper alloy, nickel alloy, metal, manganese alloy,
Multicomponent alloy in cobalt alloy or tungsten alloy or above-mentioned alloy is made.Wherein, the inner surface and the grain for accommodating shell
The surface configuration of son are as follows: the mantle friction factor is 0.01~0.99, and surface recovery coefficient is 0.01~1.In addition, selection particle material
The principle of matter is to guarantee wearability, heat-resisting quantity and chemical stability, and the material of particle can be metal or nonmetallic, is preferably adopted
With the high molecular material haveing excellent performance.The partial size selection of particle is contemplated that following factor: the location of particle, the width vibrated
Value and frequency etc..
It is further preferred based on the design, the frequency that the dried particle in shell 2 is configured that the vibration is accommodated if being built in
When close to 1 rank modal frequency, particle energy-consumption damper installation site is institute at 1 rank modal vibration maximum displacement of structure to be damped
Stating particle media and circulating from fluidised form-non-collision becomes fluidised form-collision stream, smaller by shear rate between particle, between particle
Collision effect is obvious, particle contact Stress network, and weak Stress network number fracture, strong Stress network generates, main at this time to generate
The damping effect of class collisional damping；The vibration damping shown in Figure 3 for increasing damper in 1 rank mode corresponding position of structure to be damped
Effect.When the frequency of the vibration is close to 2 rank modal frequency, particle energy-consumption damper installation site is 2 rank mould of structure to be damped
At state point, the particle media becomes fluidised form-shearing from fluidised form-non-collision circulation, and particIe system is by higher shearing at this time
Rate, contact stress network life cycle is short, and the destructing of strong contact Stress network, fracture, weak contact stress network are generated, led at this time
Generate the damping effect of class viscous liquid；It is shown in Figure 4 to increase damper in 2 rank mode corresponding position of structure to be damped
Effectiveness in vibration suppression.When the vibration frequency is close to remaining high order mode frequency, particle energy-consumption damper installation site is to be damped
It at structural modal vibration shape maximum displacement, not may be arranged on structure antiresonance point, the particle media contact stress network system
There is turbulent chaos phenomenon in destructing completely, its mixing damping effect of class viscous damper/class collisional damping is generated, to reach
To the effect to main structure vibration damping；It is shown in Figure 5 to increase subtracting for damper in structure high order mode to be damped corresponding position
Vibration effect.When the vibration frequency is far from modal frequency, the particle media becomes class solid-standard from fluidised form-non-collision circulation
Passive flow forms weak contact stress network system between particle, and contact stress network is sparse, and weak Stress network is periodically raw
At, fracture, to generate the damping effect of class viscous liquid；It is shown in Figure 6 in structure nonmodal to be damped corresponding position
Increase the effectiveness in vibration suppression of damper.
In order to adapt to the otherness difference of separation operating condition, can be advanced optimized for particle energy-consumption damper.Specifically
Ground, the shape for accommodating shell 2 can be polygon, spherical shape, cylinder, and inner wall can be smooth surface or non-smooth surface；Into
One step, the inner cavity for accommodating shell 2 can be divided at least two isolated chambers, in each isolated chambers filling it is identical and/or
The particle 2-2 of different characteristic, wherein the feature is the material and shape and size of the particle, the filling of particle 2-2
Rate is 10%~100%, can specifically be selected according to actual needs, and each particle characteristics may be the same or different, with maximum
Play effect to limit.
It should be noted that above-described embodiment that present embodiment provides is preferable example, as long as core idea and we
The application of the consistent particle energy-consumption damper of case is within the scope of the present application.It is as shown in the figure accommodate shell 2 with to
Fixed form between vibration-proof structure 1 is to be threadedly coupled, and actually can also be fixedly connected with mode using other, such as but unlimited
In, key connection, the connection of type face, swelling connection, pin connection, riveting, welding, bonding or interference connection, if can satisfy with to
Vibration-proof structure is fixedly connected.
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (8)
1. the particle energy-consumption damper based on Arius state contact stress network, which is characterized in that including to be damped for being mounted on
Receiving shell in the vibration transfer path of structure, and it is built in the intracorporal formation particle media contact stress net of the holding shell
If the dried particle of network；It can cause the destructing of the particle media contact stress network, rheology and again under the action of the vibration
Structure is decayed with dissipation energy and is vibrated.
2. particle energy-consumption damper according to claim 1, which is characterized in that the receiving shell is fixedly mounted on described
At the maximum displacement of structure to be damped or maximum mode sensitivity position.
3. particle energy-consumption damper according to claim 1 or 2, which is characterized in that it is intracorporal to be built in the holding shell
Several particles are configured that
When the frequency of the vibration is close to 1 rank modal frequency, particle energy-consumption damper installation site is 1 rank mode of structure to be damped
It vibrates at maximum displacement, the particle media becomes fluidised form-collision stream from fluidised form-non-collision circulation；
Alternatively, particle energy-consumption damper installation site is structure 2 to be damped when the frequency of the vibration is close to 2 rank modal frequency
At rank modal point, the particle media becomes fluidised form-shearing from fluidised form-non-collision circulation；
Alternatively, particle energy-consumption damper installation site is knot to be damped when the vibration frequency is close to remaining high order mode frequency
At structure Mode Shape maximum displacement, the particle media contact stress network system deconstructs completely；
Alternatively, particle energy-consumption damper installation site is structural attachments to be damped when the vibration frequency is far from modal frequency
Or stress raiser, the particle media become class solid-quasi-static stream from fluidised form-non-collision circulation.
4. particle energy-consumption damper according to claim 3, which is characterized in that the particle is 0.001~30mm of diameter
Sphere, length shaft length be the spheroid of 0.001~30mm, side length be 0.001~30mm rule polyhedron or side length
For the irregular polyhedrons of 0.001~30mm；The particle use material density for the metal of 0.1~30g/cm3, it is nonmetallic or
Polymer composite.
5. particle energy-consumption damper according to claim 4, which is characterized in that it is described accommodate shell wall thickness be 0.01~
30mm；The inner surface for accommodating shell is cylindrical body or polyhedron；It is described accommodate shell material be magnesium alloy, aluminium alloy,
It is polynary in titanium alloy, ferroalloy, copper alloy, nickel alloy, metal, manganese alloy, cobalt alloy or tungsten alloy or above-mentioned alloy
Alloy is made.
6. particle energy-consumption damper according to claim 5, which is characterized in that the inner surface of shell and described of accommodating
The surface configuration of particle are as follows: the mantle friction factor is 0.01~0.99, and surface recovery coefficient is 0.01~1.
7. particle energy-consumption damper according to claim 3, which is characterized in that the receiving housing cavity is divided into multiple
Isolated chambers, identical and/or different characteristic the particle of the interior filling of each isolated chambers, wherein the feature is institute
State the material and shape and size of particle；The filling rate of the particle is 10%~100%.
8. particle energy-consumption damper according to claim 1, which is characterized in that the receiving shell and structure to be damped it
Between fixed form be threadeds connection, key connection, the connection of type face, swelling connection, pin connection, riveting, welding, bonding or interference company
It connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811549805.6A CN109404463B (en) | 2018-12-18 | 2018-12-18 | Particle energy consumption damper based on sub-fluid state contact stress network |
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| CN201811549805.6A CN109404463B (en) | 2018-12-18 | 2018-12-18 | Particle energy consumption damper based on sub-fluid state contact stress network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337214A (en) * | 2019-05-09 | 2019-10-15 | 厦门大学 | Oscillation damping method, electronic equipment and printed circuit board based on particle damper |
| CN110792711A (en) * | 2019-10-15 | 2020-02-14 | 厦门振为科技有限公司 | Vibration isolation base based on particle damping |
| CN113404800A (en) * | 2021-07-13 | 2021-09-17 | 厦门振为科技有限公司 | Space rod piece structure vibration damping device and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621225B (en) * | 2012-03-30 | 2014-04-16 | 东南大学 | Method for testing damping characteristic parameter of road surface and bridge deck pavement material |
| CN106021630B (en) * | 2015-08-25 | 2019-06-18 | 中国运载火箭技术研究院 | A kind of structure suitable for new spatial aircraft/damping integrated design method |
| CN108709016A (en) * | 2018-06-28 | 2018-10-26 | 江苏科技大学 | A kind of pipeline clamping isolation mounting |
| CN209469745U (en) * | 2018-12-18 | 2019-10-08 | 厦门振为科技有限公司 | Particle energy-consumption damper |
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2018
- 2018-12-18 CN CN201811549805.6A patent/CN109404463B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337214A (en) * | 2019-05-09 | 2019-10-15 | 厦门大学 | Oscillation damping method, electronic equipment and printed circuit board based on particle damper |
| CN110792711A (en) * | 2019-10-15 | 2020-02-14 | 厦门振为科技有限公司 | Vibration isolation base based on particle damping |
| CN110792711B (en) * | 2019-10-15 | 2024-02-02 | 厦门振为科技有限公司 | Vibration isolation base based on particle damping |
| CN113404800A (en) * | 2021-07-13 | 2021-09-17 | 厦门振为科技有限公司 | Space rod piece structure vibration damping device and method |
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| CN109404463B (en) | 2024-04-30 |
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