CN108895111A - A kind of damper of adaptive damping, adjustable rigidity - Google Patents

A kind of damper of adaptive damping, adjustable rigidity Download PDF

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Publication number
CN108895111A
CN108895111A CN201811101299.4A CN201811101299A CN108895111A CN 108895111 A CN108895111 A CN 108895111A CN 201811101299 A CN201811101299 A CN 201811101299A CN 108895111 A CN108895111 A CN 108895111A
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China
Prior art keywords
damper
spring
outer cylinder
piston
end cap
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Granted
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CN201811101299.4A
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Chinese (zh)
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CN108895111B (en
Inventor
王敏
楚刘峰
孙翊
蒲华燕
罗均
彭艳
谢少荣
杨毅
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps

Abstract

The present invention discloses the damper of a kind of adaptive damping, adjustable rigidity.Spring compression end cap, positioned at the opening of spring fixed cylinder, the opening size of size and spring fixed cylinder matches；Diaphragm spring is set to the lower section of spring compression end cap, and damper outer cylinder is set to the inside of the spring fixed cylinder；Damper upper end cover, positioned at the opening of the damper outer cylinder, the opening size of size and damper outer cylinder matches；Damper upper end cover is set to the lower section of diaphragm spring, the through-hole of identical size is provided at the center of spring compression end cap, diaphragm spring and damper outer cylinder, piston rod passes through the through-hole of three, piston is fixed on the bottom of damper outer cylinder, piston rod passes through piston, and the inside of piston offers multiple perforative inside groove, inside grooves up and down and is arranged along the piston radial, fixed plate is located at inner tank interior, and giant electro-rheological liquid is full of inside spring fixed cylinder.Damping and the real-time adjusting of rigidity can be realized using the present invention.

Description

A kind of damper of adaptive damping, adjustable rigidity
Technical field
The present invention relates to absorber technical fields, more particularly to a kind of adaptive damping, the damper of adjustable rigidity.
Background technique
Currently, there are mainly three types of modes for damper：Passive control model, Active Control Mode, semi-active control pattern.Base In the damper of passive control model, it is most widely used, structure is simple, and it is at low cost, still, the intrinsic frequency of this damper It is non-adjustable, when or difference very little identical as excited frequency, good effectiveness in vibration suppression can be reached；When the intrinsic frequency of this damper When rate differs larger with excited frequency, then effectiveness in vibration suppression is very poor or even can be that vibration deteriorates.Vibration damping based on Active Control Mode Device, damper are to acquire vibrating object information in real time by sensor directly to provide power and offset and vibrate generated power, But required response is fast, has extra power support, cost is relatively high.Based on the damper of half aggressive mode control, damper is Acquire vibrating object information in real time by sensor to change the intrinsic frequency of itself, without consume many energy and Good effectiveness in vibration suppression can be reached, but applying has certain limitation.
As people require to be increasingly stringenter to the damper under many occasions, so that the damper of above-mentioned Three models is The damping requirements not being able to satisfy under specific occasion.Theoretical and experiment shows：In practical projects, can change with greater need for one kind Variation rigidity (increases vibration isolation frequency range), moreover it is possible to which the damper for changing damping (effectiveness in vibration suppression of optimization high frequency section) requires Damper can either change stiffness characteristics, and can change damping characteristic.However, there is no above-mentioned spies in existing damper Property.
Summary of the invention
The object of the present invention is to provide a kind of adaptive dampings, the damper of adjustable rigidity, and then realize damping and rigidity It adjusts in real time.
To achieve the above object, the present invention provides following schemes：
The damper of a kind of adaptive damping, adjustable rigidity, the damper include：Piston rod, spring compression end cap, diaphragm Spring, spring fixed cylinder, damper outer cylinder, damper upper end cover, piston, fixed plate and giant electro-rheological liquid；
The spring compression end cap is located at the opening of the spring fixed cylinder, the size of the spring compression end cap and institute The opening size for stating spring fixed cylinder matches；The diaphragm spring is set to the lower section of the spring compression end cap, the resistance Buddhist nun's device outer cylinder is set to the inside of the spring fixed cylinder, and the damper upper end cover is located at the opening of the damper outer cylinder The opening size of place, the size of the damper upper end cover and the damper outer cylinder matches；The damper upper end cover is set The lower section of the diaphragm spring is placed in, at the center of the spring compression end cap, the diaphragm spring and the damper outer cylinder It is provided with the through-hole of identical size, the piston rod passes through the spring compression end cap, the diaphragm spring and the damping Through-hole at the center of device outer cylinder, the piston are fixed on the bottom of the damper outer cylinder, and the piston rod passes through the work Plug, the piston rod match with the piston, and the inside of the piston offers multiple perforative inside grooves up and down, the inside groove It is arranged along the piston radial, the fixed plate is located at the inner tank interior, and the giant electro-rheological liquid is full of solid in the spring Inside safety barrel.
Optionally, the damper further includes sealing ring, and the sealing ring is located at the damper outer cylinder and the damping The junction of device upper end cover.
Optionally, the damper further includes linear bearing, and the damper upper end cover is with the piston rod junction Groove, the linear bearing are located at the groove.
Optionally, the diaphragm spring is connect with the spring compression end cap by hexagon socket head cap screw.
Optionally, the spring fixed cylinder is connect with the damper outer cylinder by hexagon socket head cap screw.
Optionally, the linear bearing is connect with the damper upper end cover by hexagon socket head cap screw.
Optionally, the position of the diaphragm spring and the plunger rod contacts includes hex nut.
Optionally, 2mm is divided between the fixed plate and the cell wall of the inside groove.
The specific embodiment provided according to the present invention, the invention discloses following technical effects：The present invention provides one kind can The damper of variable damping, adjustable rigidity, it is compact-sized, relative area is big, damping is good by using the pole plate of plane form And it can realize the adjusting of damping；By using diaphragm spring, using its nonlinear stiffness characteristic, by adding in change diaphragm spring The adjusting of spring stiffness is realized in the size of work hole slot, position.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the damper structure schematic diagram of adaptive damping of the embodiment of the present invention, adjustable rigidity；
Fig. 2 is the damper top view of adaptive damping, adjustable rigidity；
Fig. 3 is that diaphragm spring and axis assemble；
Fig. 4 is fixed plate and piston relative position relation figure；
Fig. 5 is fixed plate and piston relativeness normal axomometric drawing.
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.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Electro rheological fluids are to be dispersed in the suspension liquid formed in the solvent of low-k by the little particle of high dielectric constant. This suspension liquid can make solid particle polarize and interact under DC Electric Field in the moment of Millisecond, be formed flat Row is in the chain or column structure of electric field, so that liquid be made to show as this structure shape of the similar solid with certain yield stress State makes apparent viscosity increase several orders of magnitude.This effect for making fluid change state is called electric rheological effect.
Electro-rheological fluid damper is a kind of very widely used energy-eliminating shock-absorbing control device, can be used for the necks such as mechanical, building Domain.Its control mechanism is by the way that the electric rheological effect in damper, the partial vibration energy of structure is consumed by damping material It dissipates, achievees the purpose that alleviate the outer impact carried, reduces structural vibration, protection structure safety.
Giant electro-rheological liquid is to be dispersed in the one kind formed in the base fluid of giant electro-rheological liquid by polarizable dielectric particles to hang Supernatant liquid, when applying electric field to it, viscosity, shear strength etc. can transient change, the sizes such as viscosity, intensity with electric field adjusting, It continuously interior on a large scale can adjust, can reach several orders of magnitude, high viscosity fluid or even solid can be exchanged by low viscosity fluid. After extra electric field removes, fluid state, this attribute wink between liquid and solid can be restored within the millisecond time Between it is controllable, reversible, can continuously change, can pass through electric field realize torque controlled delivery and mechanism online stepless, reversible control System, can substitute traditional electrode machinery conversion component, have extensively in the self adaptive control mechanism industrial circle of electromechanical integration General application prospect especially has in fields such as national defense construction, the vehicles, hydraulic device, machinery manufacturing industry, sensor technologies More extensive application foundation and application demand are one of the critical materials that the development of damping vibration attenuation field is badly in need of.
Done research work is taught according to Hong Kong University of Science and Thchnology Wen Weijia, the novel giant electro-rheological liquid developed at present exists The yield strength that can achieve 130kPa or more under the electric field strength of 5KV/mm, can satisfy requirement of engineering completely.But it is this The coefficient of viscosity of novel giant electro-rheological liquid is only 1/10, the only 0.1Pas that common current becomes liquid, and general electric current Become the coefficient of viscosity of liquid as 1Pas.Therefore, under similarity condition, common current becomes the viscous damping force that liquid provides and is far longer than newly The viscous damping forces that type giant electro-rheological liquid provides.
During military service, vibration or shock loading can seriously affect its safety and use for various buildings or mechanical structure Service life.Installation can be reduced its vibration or shock response, increase its safety with the damping device of passive energy dissipation on above structure The effective means of property and stability.Traditional passive control damper (such as hydraulic damper) is only capable of providing uncontrollable damping Power, vibration control effect are undesirable.The intelligent damper prepared using electric/magnetic rheological body, can be by electric/magnetic field intensity Adjusting damping force is adjusted according to operating condition real-time continuously, to realize the active of structural vibration or impact and half actively control System, is better protected from the failure damage of structure.Relative to MR damper, become by the electric current of core material of giant current Damper has many advantages, such as that stability is high, structure is simple, damping force adjustable range is big, response is fast.
Diaphragm spring has comparatively ideal nonlinear elasticity characteristic, and rigidity is big, and buffering vibration absorption ability is strong, can be with small deformation Big load is born, the small occasion of axial space requirement is suitable for.Diaphragm spring has variation rigidity characteristic, and this spring has very wide The nonlinear characteristic of range.
In very large range, diaphragm spring just replaces cylindrically coiled spring.It is usually used in heavy-duty machinery (such as press machine), as Strength buffering and shock-absorbing spring, the holddown spring as almost vehicle and tractor clutch and safety valve, and it is used as flexible apparatus Energy-storage travelling wave tube.Diaphragm spring can be divided into three classes according to the difference of cross sectional shape:Including common diaphragm spring (its cross sectional shape For rectangle), the diaphragm spring with radial groove, trapezoid cross section diaphragm spring.Common diaphragm spring, which is divided into, has supporting surface and without branch Two class of support face；Diaphragm spring with radial groove is radially to output several on the basis of common diaphragm spring and uniformly divide The slot of cloth, slot can be outputed by the outside circular direction of inner hole, can also be from the inside prosecutor of outer circle to outputing；Trapezoid cross section diaphragm spring Inner edge thickness can be divided into and be less than two class of outer circle thickness type greater than foreign aid's thickness type and inner edge thickness.
Compared with cylindrically coiled spring, diaphragm spring is had the characteristics that：One, load deflection characteristics curve is in nonlinear dependence System.Two, diaphragm spring flakiness shape is easily formed sub-assembly, practicable building block assembling and replacement, thus gives the maintenance side of bringing Just.Three, band radial slot disc spring has zero stiffness characteristic.This characteristic, which can be used in certain deformation range, requires spring force basic Keep stable occasion.
Fig. 1 is the damper structure schematic diagram of adaptive damping of the embodiment of the present invention, adjustable rigidity.As shown in Figure 1, one kind can The damper of variable damping, adjustable rigidity, the damper include：Piston rod 1, spring compression end cap 2, diaphragm spring 3, spring are solid Safety barrel 4, damper outer cylinder 5, linear bearing 8, damper upper end cover 9, piston 10, fixed plate 11, O-ring seal 12 and huge electricity Rheology liquid；Wherein 6a, 6b, 6c are hexagon socket head cap screw, and 7a, 7b, 7c are hex nut；
The spring compression end cap 2 is located at the opening of the spring fixed cylinder 4, the size of the spring compression end cap 2 Match with the opening size of the spring fixed cylinder 4；The diaphragm spring 3 is set to the lower section of the spring compression end cap 2, The damper outer cylinder 5 is set to the inside of the spring fixed cylinder 4, and the damper upper end cover 9 is located at outside the damper The opening size of the opening of cylinder 5, the size of the damper upper end cover 9 and the damper outer cylinder 5 matches；The damping Device upper end cover 9 is set to the lower section of the diaphragm spring 3, the spring compression end cap 2, the diaphragm spring 3 and the damping The through-hole of identical size is provided at the center of device outer cylinder 5, the piston rod 1 passes through the spring compression end cap 2, the film Through-hole at the center of flat spring 3 and the damper outer cylinder 5, the piston 10 are fixed on the bottom of the damper outer cylinder 5, The piston rod 1 passes through the piston 10, and the piston rod 1 matches with the piston 10, and the inside of the piston 1 offers Multiple perforative inside groove, the inside grooves up and down are arranged along the piston radial, and the fixed plate 11 is located at the inner tank interior, institute Giant electro-rheological liquid is stated to be full of inside the spring fixed cylinder 4.
The sealing ring is O-ring seal 12, and the O-ring seal 12 is located at the damper outer cylinder 5 and the damping The junction of device upper end cover 9.The damper upper end cover 9 is groove, the linear bearing 2 with 1 junction of piston rod In the groove.The diaphragm spring 3 is connect with the spring compression end cap 2 by hexagon socket head cap screw.The spring is fixed Cylinder 4 is connect with the damper outer cylinder 5 by hexagon socket head cap screw.The linear bearing 8 passes through interior with the damper upper end cover 9 Hex bolts connection.The position that the diaphragm spring 3 is contacted with the piston rod 1 includes hex nut.The fixed plate 11 2mm is divided between the cell wall of the inside groove.Piston rod 1 and 2 matching part of spring compression end cap are not circles, this is to guarantee The position and gap between radial position, guarantee 10 inside groove of piston and fixed plate 11 of piston.Piston rod 1 can pass through connection Axis device or other machine components are connected in load.Before the carrying of piston rod 1, pass through the fluid injection on damper upper end cover 9 Giant electro-rheological liquid is injected in hole.Giant electro-rheological liquid is full of to be compressed in the cavity formed in damper outer cylinder 5 and damper upper end cover 9. On piston 10 plus positive supply is positive, powers up cathode on fixed plate 11.In this way, between 10 inside groove of piston and fixed plate 11 It just will form electric field between gap.When piston rod 1 moves, two-plate is mutually moved, and giant electro-rheological fluid damper can be made to produce Raw damping force.
The working principle of vibration absorber of the invention is, according to the damping effect of giant electro-rheological liquid, diaphragm spring it is non-thread Property stiffness realizes vibration damping.The variable of the damping of giant electro-rheological liquid is realized by change external voltage, diaphragm spring Rigidity it is adjustable be to be realized by the size of the interior processing hole slot of change diaphragm spring, position.Piston rod 1 can pass through bolt Equal components are connected with the device of vibration damping is needed.Giant electro-rheological liquid is housed, piston rod 1 is mainly done up and down in damper outer cylinder 5 Movement.Under the action of extra electric field, rheological property changes liquid between two-plate, and viscosity increases, damping is Number becomes larger.In this way, giant electro-rheological liquid can produce certain damping.The size of damping can change with the change of voltage Become, semi- active control and active control may be implemented.The rigidity of diaphragm spring is adjustable to can according to need the load of vibration absorber Change, and then Optimization Vibration effect.
Fig. 2 is the damper top view of adaptive damping, adjustable rigidity；Fig. 3 is that diaphragm spring and axis assemble；Fig. 4 is to determine pole Plate and piston relative position relation figure；Fig. 5 is fixed plate and piston relativeness normal axomometric drawing.
The present invention has following advantages：
1, pole plate uses the form of plane, forms electrode gap.When the size of outer cylinder determines, positive/negative plate is using multiple Plane pole plate shape, it is compact-sized, relative area is big, damping is good；
2, using this new material of giant electro-rheological liquid, the response that giant electro-rheological liquid changes with voltage quickly, damper dress The damping set can change with voltage, and effectiveness in vibration suppression is got well than general passive rubber damping；
3, the area of damp channel is increased in upper and lower polar board surface pitting processing in a limited space, and significantly reduced Sliding between giant electro-rheological liquid and polar board surface has simple structure fast response time, light weight, that small in size, power output is big etc. is excellent Point.
4, using diaphragm spring, nonlinear stiffness characteristic is fine for the damping effect of thin tail sheep precision instrument.Diaphragm The rigidity of spring is adjustable to be realized by the size of the interior processing hole slot of change diaphragm spring, position.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not It is interpreted as limitation of the present invention.

Claims (8)

1. the damper of a kind of adaptive damping, adjustable rigidity, which is characterized in that the damper includes：Piston rod, spring compression End cap, diaphragm spring, spring fixed cylinder, damper outer cylinder, damper upper end cover, piston, fixed plate and giant electro-rheological liquid；
The spring compression end cap is located at the opening of the spring fixed cylinder, the size of the spring compression end cap and the bullet The opening size of spring fixed cylinder matches；The diaphragm spring is set to the lower section of the spring compression end cap, the damper Outer cylinder is set to the inside of the spring fixed cylinder, and the damper upper end cover is located at the opening of the damper outer cylinder, institute The opening size of the size and the damper outer cylinder of stating damper upper end cover matches；The damper upper end cover is set to institute The lower section of diaphragm spring is stated, is respectively provided at the center of the spring compression end cap, the diaphragm spring and the damper outer cylinder There is the through-hole of identical size, the piston rod passes through the spring compression end cap, the diaphragm spring and the damper outer cylinder Center at through-hole, the piston is fixed on the bottom of the damper outer cylinder, and the piston rod passes through the piston, described Piston rod matches with the piston, and the inside of the piston offers multiple perforative inside grooves up and down, and the inside groove is described in Piston radial setting, the fixed plate are located at the inner tank interior, and the giant electro-rheological liquid is full of in the spring fixed cylinder Portion.
2. multilayer pole plate giant electro-rheological fluid damper according to claim 1, which is characterized in that the damper further includes Sealing ring, the sealing ring are located at the junction of the damper outer cylinder and the damper upper end cover.
3. multilayer pole plate giant electro-rheological fluid damper according to claim 1, which is characterized in that the damper further includes Linear bearing, the damper upper end cover and the piston rod junction are groove, and the linear bearing is located at the groove.
4. multilayer pole plate giant electro-rheological fluid damper according to claim 1, which is characterized in that the diaphragm spring and institute Spring compression end cap is stated to connect by hexagon socket head cap screw.
5. multilayer pole plate giant electro-rheological fluid damper according to claim 1, which is characterized in that the spring fixed cylinder with The damper outer cylinder is connected by hexagon socket head cap screw.
6. multilayer pole plate giant electro-rheological fluid damper according to claim 3, which is characterized in that the linear bearing and institute Damper upper end cover is stated to connect by hexagon socket head cap screw.
7. multilayer pole plate giant electro-rheological fluid damper according to claim 1, which is characterized in that the diaphragm spring and institute The position for stating plunger rod contacts includes hex nut.
8. multilayer pole plate giant electro-rheological fluid damper according to claim 1, which is characterized in that the fixed plate with it is described 2mm is divided between the cell wall of inside groove.
CN201811101299.4A 2018-09-20 2018-09-20 Shock absorber with variable damping and adjustable rigidity Active CN108895111B (en)

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CN108895111B CN108895111B (en) 2019-12-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109752235A (en) * 2019-03-27 2019-05-14 上海大学 A kind of giant electro-rheological liquid extruding force test device
CN111779790A (en) * 2020-07-24 2020-10-16 上海大学 Vibration damper
CN112161017A (en) * 2020-09-22 2021-01-01 汕头大学 Quick response magneto-rheological damper
CN112901703A (en) * 2021-01-29 2021-06-04 重庆大学 Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids

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CN104214267A (en) * 2014-08-22 2014-12-17 华中科技大学 Combined type short-stroke buffer device
CN205315597U (en) * 2015-07-24 2016-06-15 南京航空航天大学 Diaphragm formula molecule spring vibration -isolation buffer
CN106763441A (en) * 2016-12-14 2017-05-31 长安大学 A kind of automatic adjustable automobile absorber of resistance
CN108006147A (en) * 2017-12-04 2018-05-08 上海大学 A kind of hybrid giant electro-rheological fluid damper of multilayer shear extrusion

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JPH08505208A (en) * 1992-10-15 1996-06-04 チ エツフエ ゴンマ ソチエタ ペル アツイオニ Valves and related improvements for controlling electrorheological fluids used in hydroelastic vibration isolation supports, especially for supporting automobile engines
CN104214267A (en) * 2014-08-22 2014-12-17 华中科技大学 Combined type short-stroke buffer device
CN205315597U (en) * 2015-07-24 2016-06-15 南京航空航天大学 Diaphragm formula molecule spring vibration -isolation buffer
CN106763441A (en) * 2016-12-14 2017-05-31 长安大学 A kind of automatic adjustable automobile absorber of resistance
CN108006147A (en) * 2017-12-04 2018-05-08 上海大学 A kind of hybrid giant electro-rheological fluid damper of multilayer shear extrusion

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109752235A (en) * 2019-03-27 2019-05-14 上海大学 A kind of giant electro-rheological liquid extruding force test device
CN111779790A (en) * 2020-07-24 2020-10-16 上海大学 Vibration damper
CN111779790B (en) * 2020-07-24 2021-09-28 上海大学 Vibration damper
CN112161017A (en) * 2020-09-22 2021-01-01 汕头大学 Quick response magneto-rheological damper
CN112161017B (en) * 2020-09-22 2022-08-16 汕头大学 Quick response magneto-rheological damper
CN112901703A (en) * 2021-01-29 2021-06-04 重庆大学 Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids
CN112901703B (en) * 2021-01-29 2022-12-09 重庆大学 Prevent subsiding formula multilayer spiral polar plate attenuator based on huge electrorheological fluids

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