CN208396052U - Harmony liquid condenser - Google Patents
Harmony liquid condenser Download PDFInfo
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- CN208396052U CN208396052U CN201820503987.2U CN201820503987U CN208396052U CN 208396052 U CN208396052 U CN 208396052U CN 201820503987 U CN201820503987 U CN 201820503987U CN 208396052 U CN208396052 U CN 208396052U
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Abstract
A kind of harmony liquid condenser, suitable for being installed in a works and for providing one vibration reduction efficiency of works, which includes groove body, at least a shock absorber part and liquid.The groove body includes bottom wall and the wall that upwardly extends from the bottom wall periphery, and the bottom wall and the wall define inner space.The shock absorber part is set in the inner space, and there are the multiple holes to communicate with each other, it waits so that the shock absorber part has to permeability, and the ratio of the total volume of the volume of described hole and the shock absorber part is defined as void ratio γ, γ is greater than equal to 0.2 and less than 1.The liquid is contained in the inner space, and at least part of the inner space is not filled by the liquid, which can flow between described hole in the groove body movement under force, to generate energy dissipating effect.
Description
Technical field
The utility model relates to a kind of harmony liquid condensers, subtract with equal to the porous of permeability more particularly to one kind
Shake the harmony liquid condenser of part.
Background technique
Develop advanced structural damping technology, is the important topic of building, machinery and ocean engineering field now.Tradition
Works damping device it is many kinds of, such as tuned mass damper (Tuned Mass Damper), harmony liquid condenser
(Tuned Liquid Damper) and Improvement type harmony liquid condenser etc., are described below respectively:
Fig. 1 illustrates a plane steelframe (representative structure object) for being installed with a tuned mass damper, the plane steelframe by
Beam 51 and column 52 are constituted, and are the device harmony matter on beam to reduce the shock momentum that the plane steelframe is generated by external force
Damper is measured, is made of mass block 53, spring 54, damping 55 and idler wheel 56.The shock absorption principle of tuned mass damper,
It is the inertia force generated when utilizing resonance with the works reversing of motion, to reduce works vibration, and utilizes possessed by itself
55 consumption extraneous energy of damping.When the ratio of the natural frequency of the natural frequency and works of mass damper reaches harmony frequency
Damping ratio than (tuned-frequency ratio) and mass damper reaches optimum damping ratio (optimal damping
When ratio), this mass damper is known as tuned mass damper (Tuned Mass Damper), imitates with optimal damping
Energy.
Fig. 2 illustrates a plane steelframe (representative structure object) for being installed with a harmony liquid condenser, the harmony fluid damping
Device is made of sink 58 and tank liquid 57, and structure is simple, if the water storage tank of buildings in general by appropriately designed, Ji Kecheng
It is that when utilizing liquid by external force, the power with the works reversing of motion is generated because of impulse for harmony liquid condenser
Amount, to reduce the vibration of works.The greatest drawback of traditional harmony liquid condenser is that damping ratio is too small, relies primarily on liquid 57
Viscosity the mechanism of consumption energy is provided, therefore design anyway, practical vibration reduction efficiency is all more than the quilt of other types
The difference that dynamic formula energy dissipation damper comes.A kind of subsequent Improvement type harmony liquid condenser is that several fence or shelves are installed in sink
Plate, but its damping ratio is still unable to reach expection.In addition, the harmony liquid condenser announcement that CN103590503A case discloses can be saturating
Setting sponge is crossed to improve damping and prevent liquid from splashing out, but its damping ratio can not meet practice demand, and it does not have
Any announcement on how to regulate and control harmony frequency ratio.
Generally speaking, existing known harmony liquid condenser is difficult to simply be designed and regulated and controled required to reach
Damp when natural frequency.
Utility model content
It is simple the purpose of this utility model is to provide a kind of structure and can simply be regulated and controled to reach required damping ratio
And the harmony liquid condenser of natural frequency.
The utility model harmony liquid condenser is suitable for being installed in works and for providing the works vibration reduction efficiency,
The harmony liquid condenser includes groove body, at least a shock absorber part and liquid, which includes bottom wall and upward from the bottom wall periphery
The wall of extension, the bottom wall and the wall define inner space；The shock absorber part is set in the inner space, and is had each other
Multiple holes of connection wait so that the shock absorber part has to permeability, and the totality of the volume of described hole and the shock absorber part
Long-pending ratio is defined as void ratio γ (porosity γ), and γ is greater than equal to 0.2 and less than 1；It is interior that the liquid is contained in this
Portion space, and at least part of the inner space is not filled by the liquid, which can flow in the groove body movement under force
Between described hole, to generate energy dissipating effect.
In some state sample implementations, void ratio γ is greater than equal to 0.4 and less than 0.8.
In some state sample implementations, which fills all or part of the inner space." shock absorber part fills herein
Fill out the whole of the inner space " refer to, the size and shape of the shock absorber part is so that neat be somebody's turn to do substantially is pasted in the outer surface of its skeleton
Wall and bottom wall, and the height of the skeleton of the shock absorber part is not less than the apical margin of the wall.
In some state sample implementations, which is set on the top surface of the bottom wall, and is upwardly extended by the top surface.
In some state sample implementations, which is the part for filling the inner space, and is set to the top of the bottom wall
Face is arranged by middle or along the wall.
In some state sample implementations, which is divided into the bottom portion close to bottom wall, is located above the bottom portion
Middle layer portion and the upper layer part above the middle layer portion, the shock absorber part be set to the upper layer part, the middle layer portion and/or the bottom
Portion.
In some state sample implementations, also comprising the fixing piece for the shock absorber part to be fixed on to the groove body.
In some state sample implementations, the groove body is in a rectangular parallelepiped shape or cylindric.
In some state sample implementations, which fills the whole of the inner space, which in a rectangular parallelepiped shape and has
Length L and width B, it is h which, which is contained the height in the groove body, and the liquid has coefficient of viscosity μ and density p, this subtracts
Shaking part has void ratio γ and infiltration coefficient κ, and the harmony liquid condenser is in the equivalent mass m of the first polarization state0With the works
Quality msRatio be Rm, the natural frequency of the works is ωs, and the harmony liquid condenser has natural frequency ωnAnd
Damping ratio ξn, the calculating of L, B, h, γ and the κ need to meet following formula:
Formula (A1), rectangular-shape harmony liquid condenser in the n-th polarization state quality be mn,
Formula (A2), rectangular-shape harmony liquid condenser natural frequency be ωn,
Wherein
Formula (A3), rectangular-shape harmony liquid condenser damping ratio be ξn,
Formula (4), rectangular-shape harmony liquid condenser are in the equivalent mass m of the first polarization state0With the quality m of workss's
Ratio is Rm,
Formula (5), rectangular-shape harmony liquid condenser harmony frequency ratio be ft,
Formula (6), rectangular-shape harmony liquid condenser optimum damping ratio be ξopt,
Wherein, the g in formula (A2) is acceleration of gravity, the natural frequency ω of formula (A2)nDivided by ωsObtained frequency
Compare f0Equal to the harmony frequency ratio f of formula (5)t, and the damping ratio ξ of formula (A3)nEqual to the optimum damping ratio ξ of formula (6)opt。
In some state sample implementations, wherein the shock absorber part fills the whole of the inner space, and the groove body is cylindrical and has
Have radius R, the liquid be contained in the groove body height be h, and the liquid have coefficient of viscosity μ and density p, the shock absorber part tool
There is void ratio γ and infiltration coefficient κ, the harmony liquid condenser is in the equivalent mass m of the first polarization state0With the quality m of the workss
Ratio be Rm, the natural frequency of the works is ωs, and the harmony liquid condenser has natural frequency ωnAnd damping ratio
ξn, the calculating of R, h, γ and the κ need to meet following formula:
Formula (B1), cylindric harmony liquid condenser in the n-th polarization state quality be mn,
Formula (B2), cylindric harmony liquid condenser natural frequency be ωn,
Formula (B3), cylindric harmony liquid condenser damping ratio be ξn,
Formula (4), harmony liquid condenser are in the equivalent mass m of the first polarization state0With the quality m of workssRatio be
Rm,
Formula (5), harmony liquid condenser harmony frequency ratio be ft,
Formula (6), harmony liquid condenser optimum damping ratio be ξopt,
Wherein, the g in formula (B2) is acceleration of gravity and λnFor first kind shellfish rope equation (Bessel
Function of the first kind) n-th of first derivative, the natural frequency ω of formula (B2)nDivided by ωs?
To frequency ratio f0Equal to the harmony frequency ratio f of formula (5)t, and the damping ratio ξ of formula (B3)nEqual to the best resistance of formula (6)
Buddhist nun's ratio ξopt。
The utility model has the beneficial effects that: by be arranged in groove body have the multiple holes to communicate with each other it is equal to
Shock absorber part is permeated, and adjusts its void ratio in a particular range section, so that harmony liquid condenser actually can be used advantageously
The damping of works is carried out, furthermore, position, groove body shape is arranged in cooperation control shock absorber part, and compactly practical through this
Novel creator, which studies, concludes resulting above-mentioned formula combination, to regulate and control L, B, R, h, γ and κ, so that the utility model harmony liquid
Body damper can have or approach best group Buddhist nun when harmony frequency ratio.And this case also has that structure is simple, design flexibility, builds
It makes and the advantages of maintenance cost is low and varies without the structural system of original structure object.
Detailed description of the invention
Fig. 1 is a schematic diagram, illustrates a plane steelframe for being installed with a tuned mass damper；
Fig. 2 is a schematic diagram, illustrates a plane steelframe for being installed with a harmony liquid condenser；
Fig. 3 is a stereoscopic schematic diagram of a first embodiment of the utility model harmony liquid condenser；
Fig. 4 is a perspective exploded view of a first embodiment of the utility model harmony liquid condenser；
Fig. 5 is a schematic top plan view of a second embodiment of the utility model harmony liquid condenser；
Fig. 6 is a schematic top plan view of a 3rd embodiment of the utility model harmony liquid condenser；
Fig. 7 is a schematic top plan view of a fourth embodiment of the utility model harmony liquid condenser；
Fig. 8 is a schematic top plan view of one the 5th embodiment of the utility model harmony liquid condenser；
Fig. 9 is the one side schematic view of a sixth embodiment of the utility model harmony liquid condenser；And
Figure 10 is a schematic top plan view of one the 9th embodiment of the utility model harmony liquid condenser.
Specific embodiment
Before the utility model is described in detail, it shall be noted that in the following description content, similar component be with
It is identically numbered to indicate.
Refering to Fig. 3 and Fig. 4, the first embodiment of the utility model harmony liquid condenser includes a groove body 1, a liquid 2
An and shock absorber part 3.The groove body 1 is a sink in a rectangular parallelepiped shape, including a bottom wall 11 and one prolongs upwards from 11 periphery of bottom wall
The wall 12 stretched, the bottom wall 11 and the wall 12 define an inner space 13 injected for liquid 2.The shock absorber part 3 is preferably
Plastic material simultaneously has multiple holes 31, and leaching is placed in the liquid 2, so that the liquid 2 is filled in the shock absorber part 3 flowablely
Described hole 31 at least part.Preferably, the liquid 2 is water, using upper more convenient.The height h of liquid 2 is lower than
The height of groove body fills at least part in the inner space 13 by the liquid 2, in the shape of 1 movement under force of groove body
Under state, which can flow between the described hole of the shock absorber part 3 and play effect of energy dissipation.In the present embodiment, the shock absorber part 3
It is set on the top surface 111 of the bottom wall 11, and is extended upwardly to by the top surface 111 and flushed with the apical margin 121 of the wall 12, and
Fill the whole of the inner space 13.
According to the utility model creator's the study found that by the described hole 31 of the shock absorber part 3 is designed in each other connecting
It is logical, and the shock absorber part 3 have it is equal to permeability (isotropic permeability), cooperate described hole 31 total volume and
The ratio (void ratio) of the volume of the shock absorber part 3 is controlled in the range more than or equal to 0.2 and less than 1, before can efficiently solving
State problem of the prior art.When the ratio (void ratio) is less than 0.2, the slight change of the height h of liquid 2 can make damper
Natural frequency variation it is excessive, cause to be difficult to operate harmony natural frequency ratio in practice.Preferably, the ratio (void ratio) is big
In being equal to 0.4 and being less than or equal to 0.8, the solid material ratio of shock absorber part 3 is more suitable for operating and regulating and controlling other parameters to obtain at this time
Obtain required damping ratio.
Refering to Fig. 4 and Fig. 5, in the second embodiment of the utility model harmony liquid condenser, the shock absorber part 3 and first real
The similar of example is applied, is set on the top surface 111 of the bottom wall 11, and extends upwardly to the top with the wall 12 by the top surface 111
Edge 121 flushes, but length is shorter and is only arranged at the top surface 111 by middle (Fig. 5 is top view), and is only filled with the interior of part
Portion space 13, the harmony liquid condenser also include four and connect the groove body 1 and the fixing piece 4 for fixing the shock absorber part 3,
The fixing piece 4 is extended upwardly to by the top surface 111 and is flushed with the apical margin 121 of the wall 12.
Refering to Fig. 6, the 3rd embodiment of the utility model harmony liquid condenser includes two phases for being located at the wall 12
The shock absorber part 3 of anti-two sides is arranged and the only inner space 13 of pack portion respectively along the wall 12.And similar first implements
Example, the shock absorber part 3 is set on the top surface 111 of the bottom wall 11, and by the top surface 111 extend upwardly to the wall 12 it
Apical margin 121 flushes (Fig. 6 is top view), and the setting of the fixing piece 4 is also identical with the first embodiment.Thus the inside is empty
Between other purposes can not had by the liquid 2 that the shock absorber part 3 leaching is set in 13, such as fire-fighting purposes or provide and promptly use water,
As additional advantage.
Refering to Fig. 7, the fourth embodiment of the utility model harmony liquid condenser includes four shock absorber parts 3, the damping
Part 3 is set at each interval on the top surface 111 of the bottom wall 11, and by the top surface 111 extend upwardly to the wall 12 it
Apical margin 121 flushes (Fig. 7 is top view), and the only inner space 13 of pack portion, which also includes 12
A fixing piece 4 for connecting the groove body 1 and being used to fix the shock absorber part 3, the fixing piece 4 are extended upwardly to by the top surface 111
It flushes with the apical margin 121 of the wall 12, as described above may not be used by the liquid 2 that the shock absorber part 3 leaching is set in the inner space 13
For utilizing.In other state sample implementations, the quantity of shock absorber part 3 is not limited with above-mentioned, as long as multiple.
Refering to Fig. 8, the 5th embodiment of the utility model harmony liquid condenser, wherein the shock absorber part 3 is along the wall
12 ground are set on the top surface 111 of the bottom wall 11, and are extended upwardly to the apical margin 121 of the wall 12 together by the top surface 111
Flat (Fig. 8 is top view), and the only inner space 13 of pack portion.
Refering to Fig. 9, the sixth embodiment of the utility model harmony liquid condenser, wherein the inner space 13 is distinguished
It is located at the middle layer portion 132 and one of 131 top of bottom portion positioned at the middle layer portion 132 close to the bottom portion of bottom wall 11 131, one for one
The upper layer part 133 of top.The harmony liquid condenser also includes two and connects the groove body 1 for fixing the fixation of the shock absorber part 3
Part 4, the fixing piece 4 is to be laterally extended, and the setting of shock absorber part 3 is in the fixing piece 4 and is located at the upper layer part 133.
The 7th of the utility model harmony liquid condenser is similar to sixth embodiment to the 8th embodiment, though not with diagram
Out, difference is only that, the shock absorber part 3 of the 7th embodiment is located at the middle layer portion 132, shock absorber part 3 of the 8th embodiment
In the bottom portion 131.In embodiments, the fixing piece 4 is the support moulding for being locked in groove body 1, and but not limited to this.Have
The selection of the fixing piece 4 is closed, as long as the shock absorber part 3 can be fixed on to the predetermined position in the inner space 13 of groove body 1, example
Such as shock absorber part 3 or the form of a support platform, it is arranged for the shock absorber part 3.
Refering to fig. 10, the 9th embodiment of the utility model harmony liquid condenser, wherein the groove body 1 is cylindrical, and
The shock absorber part 3 is set on the top surface 111 of the bottom wall 11, and the apical margin with the wall 12 is extended upwardly to by the top surface 111
121 flush (Figure 10 is top view), and fill the whole of the inner space 13.The tenth of the utility model harmony liquid condenser
Though embodiment is not to illustrate, similar with the 9th embodiment, difference is that the shock absorber part 3 is partly to fill the inner space
13。
In addition, being based on operational requirements, the utility model harmony liquid condenser can also add a lid above groove body 1
(not shown), to be closed in the opening of 12 upside of the wall, avoid personnel, instrument or it is dirty fall into groove body 1, and generate safety
And the problem of maintenance.
Furthermore the degree that the liquid 2 due to being located at upper layer part 133 flows is greater than middle layer portion 132, positioned at middle layer portion 132
2 liquidity of liquid is greater than lower layer part, and can be greater than positioned at groove body 2 by the degree of the flowing of liquid 2 of intermediate region and lean on wall 12
Region.The damping that liquid 2 flows in porous material again is related to flow velocity, therefore shock absorber part 3 can be set to liquid 2 in slot
Flow more violent place in body 1, i.e., inner space 13 at intermediate and upper layer, to promote damping efficiency.
Preferably, the utility model creator is, it was also found that the infiltration coefficient for regulating and controlling the shock absorber part 3 also will affect liquid resistance
The damping ratio of Buddhist nun's device, detailed relation repeat after holding.
Furthermore according to the shock absorption principle of passive type mass damper, it is known that have three important design parameters, respectively hinder
The damping ratio of the mass ratio of Buddhist nun's device and works, natural frequency when damper itself.The utility model creator returns through research
It receives and learns, the utility model harmony liquid condenser need to make the natural frequency of damper to promote and approaching best damping effect
Rate is equal to harmony frequency (tuned-frequency), and the damping ratio of damper is enabled to be equal to optimum damping ratio (optimal
damping ratio).Also, illustrating in elementary fluid mechanics, energy dissipation when liquid flows in porous material and liquid are glutinous
The void ratio of stickiness and porous material is related with infiltration coefficient, and the utility model creator, which converts such research to liquid, to be hindered
In the design of Buddhist nun's device, so further using the groove body size for meeting specific formulation relationship, liquid other than controlling aforementioned void ratio
The infiltration coefficient of body height and shock absorber part can make liquid condenser reach optimal damping when harmony frequency ratio.
Specifically, by taking the groove body of a rectangular-shape as an example, it is assumed that with the equal porous shock absorber part to infiltration of a cuboid
Whole spaces of the groove body are filled, the length of groove body is L and width is B, and 2 height of liquid of injection groove body 1 is h, and liquid glues
Stagnant coefficient is μ and density is ρ, and the void ratio of shock absorber part 3 is γ and infiltration coefficient is κ, and the harmony liquid condenser is in the first vibration
The equivalent mass m of state0With the quality m of the workssRatio be Rm, the natural frequency of works is ωs, then the harmony liquid
The natural frequency ω of dampernIt can be expressed as aforementioned formula (A2), frequency ratio f0It is then ωn/ωs, and damping ratio ξnIt can be expressed as
Aforementioned formula (A3), and harmony frequency ratio can be obtained by aforementioned formula (5), optimum damping ratio can be acquired by aforementioned formula (6), this
When, as long as enabling frequency ratio f0Equal to harmony frequency ratio ft, and damping ratio ξnEqual to optimum damping ratio ξopt, you can get it L, B, h,
Relationship between γ, κ.
Based on above-mentioned, the optimization design step of rectangular-shape or cylindric harmony liquid condenser in the utility model is such as
Under:
1. the mass ratio R of given first liquid condenser and worksm, can be in the hope of according to aforementioned formula (5) and (6)
Harmony frequency ratio and optimum damping ratio.
2. enabling the natural frequency ω of aforementioned formula (A2) or the liquid condenser of (B2)nDivided by ωsObtained frequency ratio f0Deng
In the harmony frequency ratio that 1. acquire, at coincidence formula (A1) and (A2) or (B1) and (B2), can solving device have the shock absorber part 3
Void ratio γ, groove body 1 length L, width B or radius R and liquid 2 height h relationship.
3. enabling the damping ratio ξ of aforementioned formula (A3) or the liquid condenser of (B3)nThe optimum damping ratio acquired equal to 1.
ξopt, then the relationship that 2. obtain brought into, the infiltration coefficient κ of the shock absorber part 3 can be found out.
In some state sample implementations, when the γ h of cuboid sink is 0.1L, selecting infiltration coefficient κ is between 10-7m2~
10-5m2Between porous shock absorber part 3 can reach preferable damping effect.
It holds, this case according to the requirement of practical application, can adjust length L, width B or the radius R of groove body 1,2 height of liquid
H, the hole of shock absorber part 3 when infiltration coefficient can make liquid condenser have harmony frequency when optimum damping ratio.Below with
For the equal whole spaces for filling a cuboid groove body to the porous shock absorber part of infiltration of one cuboid, three groups of different parameters are illustrated
The data form of the utility model harmony liquid condenser (TLD-1, TLD-2 and TLD-3), wherein the width B of cuboid groove body
Be be given as 10cm, liquid is water, the coefficient of viscosity μ value of water is 10-3Pas, density p value are 1000kg/m3:
As seen from the above table, the aspect of three illustrations of the utility model harmony liquid condenser can reach about 7.6%
Optimum damping ratio, this meets the optimum damping ratio of industry required 5~10%, is better than aforementioned Improvement type harmony liquid condenser
Most about 4% optimum damping ratio can be reached.
Application quite extensive, all act skyscrapers, high tower, the bridge, ship, sea of the utility model harmony liquid condenser
Domain platform, the equipment or instrument etc. are all applicable, wherein with shake period longer works the most be suitble to, as skyscraper,
High tower, ship etc..
In conclusion the utility model harmony liquid condenser is by setting the subtracting with multiple holes 31 in groove body 1
Shake part 3 simultaneously adjusts its void ratio in a particular range section, so that the vibration of works can be actually advantageously reduced in damper,
Furthermore the shape of position, groove body 1 that cooperation control shock absorber part 3 is arranged, and compactly resulting aforementioned public affairs are concluded through research
Formula, to regulate and control L, B, R, h, γ and κ, so that the utility model harmony liquid condenser can have or approach best group Buddhist nun's ratio.This
Case has structure simple, design flexibility, installation and maintenance cost low and vary without the structural system of original structure object simultaneously
Advantage, therefore the purpose of the utility model can be reached really.
Only as described above, only the embodiments of the present invention are implemented when that cannot limit the utility model with this
Range, i.e., generally according to simple equivalent changes and modifications made by the utility model claims book and description, all
Still belong in the range of the utility model patent covers.
Claims (10)
1. a kind of harmony liquid condenser, suitable for being installed in works and for providing the works damping effect, feature
It is, which includes:
Groove body, including bottom wall and the wall upwardly extended from the bottom wall periphery, the bottom wall and the wall define inner space；
An at least shock absorber part is set in the inner space, and has the multiple holes to communicate with each other, so that the shock absorber part has
Deng to permeability, and the ratio of the total volume of the volume of described hole and the shock absorber part is defined as void ratio γ, and γ is big
In equal to 0.2 and less than 1；And
Liquid is contained in the inner space, and at least part of the inner space is not filled by the liquid, and the liquid is in the slot
It can be flowed between described hole when body movement under force, to generate energy dissipating effect.
2. harmony liquid condenser as described in claim 1, it is characterised in that: void ratio γ is greater than equal to 0.4 and small
In 0.8.
3. harmony liquid condenser as described in claim 1, it is characterised in that: the shock absorber part fills the whole of the inner space
Or part.
4. harmony liquid condenser as described in claim 1, it is characterised in that: the shock absorber part is set to the top surface of the bottom wall
On, and upwardly extended by the top surface.
5. harmony liquid condenser as claimed in claim 4, it is characterised in that: the shock absorber part is the portion for filling the inner space
Point, and be set to the bottom wall the top surface by middle or along the wall be arranged.
6. harmony liquid condenser as described in claim 1, it is characterised in that: the inner space is divided into close to bottom wall
Bottom portion, the middle layer portion above the bottom portion and the upper layer part above the middle layer portion, the shock absorber part are set on this
Layer portion, the middle layer portion and/or the bottom portion.
7. harmony liquid condenser as described in claim 1, it is characterised in that: the harmony liquid condenser also includes for inciting somebody to action
The shock absorber part is fixed on the fixing piece of the groove body.
8. harmony liquid condenser as described in claim 1, it is characterised in that: the groove body is in a rectangular parallelepiped shape or cylindric.
9. harmony liquid condenser as claimed in claim 8, it is characterised in that: the shock absorber part fills the complete of the inner space
Portion, the groove body in a rectangular parallelepiped shape and have length L and a width B, and it is h which, which is contained the height in the groove body, and the liquid
With coefficient of viscosity μ and density p, which has void ratio γ and infiltration coefficient κ, and the harmony liquid condenser is in the first vibration
The equivalent mass m of state0With the quality m of the workssRatio be Rm, the natural frequency of the works is ωs, and the harmony liquid
Body damper has natural frequency ωnAnd damping ratio ξn, the calculating of L, B, h, γ and the κ need to meet following formula:
Formula (A1), rectangular-shape harmony liquid condenser in the n-th polarization state quality be mn,
Formula (A2), rectangular-shape harmony liquid condenser natural frequency be ωn,
Wherein
Formula (A3), rectangular-shape harmony liquid condenser damping ratio be ξn,
Formula (4), harmony liquid condenser are in the equivalent mass m of the first polarization state0With the quality m of workssRatio be Rm,
Formula (5), harmony liquid condenser harmony frequency ratio be ft,
Formula (6), rectangular-shape harmony liquid condenser optimum damping ratio be ξopt,
Wherein, the g in formula (A2) is acceleration of gravity, the natural frequency ω of formula (A2)nDivided by ωsObtained frequency ratio f0
Equal to the harmony frequency ratio f of formula (5)t, and the damping ratio ξ of formula (A3)nEqual to the optimum damping ratio ξ of formula (6)opt。
10. harmony liquid condenser as claimed in claim 8, it is characterised in that: the shock absorber part fills the complete of the inner space
Portion, the groove body it is cylindrical and have radius R, the liquid be contained in the groove body height be h, and the liquid have viscous system
Number μ and density p, the shock absorber part have void ratio γ and infiltration coefficient κ, and the harmony liquid condenser is in the equivalent matter of the first polarization state
Measure m0With the quality m of the workssRatio be Rm, the natural frequency of the works is ωs, and the harmony fluid damping utensil
There is natural frequency ωnAnd damping ratio ξn, the calculating of R, h, γ and the κ need to meet following formula:
Formula (B1), cylindric harmony liquid condenser in the n-th polarization state quality be mn,
Formula (B2), cylindric harmony liquid condenser natural frequency be ωn,
Formula (B3), cylindric harmony liquid condenser damping ratio be ξn,
Formula (4), harmony liquid condenser are in the equivalent mass m of the first polarization state0With the quality m of workssRatio be Rm,
Formula (5), harmony liquid condenser harmony frequency ratio be ft,
Formula (6), harmony liquid condenser optimum damping ratio be ξopt,
Wherein, the g in formula (B2) is acceleration of gravity and λnIt is n-th of the first derivative of first kind shellfish rope equation,
The natural frequency ω of formula (B2)nDivided by ωsObtained frequency ratio f0Equal to the harmony frequency ratio f of formula (5)t, and formula (B3)
Damping ratio ξnEqual to the optimum damping ratio ξ of formula (6)opt。
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| CN201820503987.2U CN208396052U (en) | 2018-04-10 | 2018-04-10 | Harmony liquid condenser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186809A (en) * | 2021-05-19 | 2021-07-30 | 大连理工大学 | Damper system controlled by acceleration to control switch |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186809A (en) * | 2021-05-19 | 2021-07-30 | 大连理工大学 | Damper system controlled by acceleration to control switch |
| CN113186809B (en) * | 2021-05-19 | 2022-06-14 | 大连理工大学 | Damper system controlled by acceleration to control switch |
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