CN101576138A - Particles-impact damper with elastic support - Google Patents
Particles-impact damper with elastic support Download PDFInfo
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- CN101576138A CN101576138A CNA2009100528721A CN200910052872A CN101576138A CN 101576138 A CN101576138 A CN 101576138A CN A2009100528721 A CNA2009100528721 A CN A2009100528721A CN 200910052872 A CN200910052872 A CN 200910052872A CN 101576138 A CN101576138 A CN 101576138A
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Abstract
The invention relates to a particles-impact damper with an elastic support. The inner part of the particles-impact damper is provided with an elastic energy-storage component and a plastic impact energy-dissipation component. The invention is characterized in that the particles-impact damper is connected with a controlled main system through the elastic support and the natural vibration frequency of the particles-impact damper is not greater than that of the controlled main system. The elastic support can be a spiral spring, a plate spring or an elastic cushion; and free movement direction of the elastic support is identical to the vibration direction of the controlled main system. The particles-impact damper can effectively reduce acceleration in impact process and decrease impact on the controlled main system so as to consume vibration energy of the controlled main system to the maximum extent, reduce the energy retransmission to the controlled main system and alleviate the impact of ultraharmonics and subharmonic. The particles-impact damper can be applied to the vibration control of nonlinear systems with low frequency and dense modes.
Description
Technical field
The present invention relates to a kind of flexibly mounted particles-impact damper of being with, belong to the vibration control technology field.
Background technique
Collisional damping belongs to the vibration passive control technique, and it utilizes the collision of free quality (impactor) and main system in the vibration processes to control the response of main system.Because the impact damper simple structure, with low cost, easy to implement, need not power supply, be adapted under the rugged environment using and effectiveness in vibration suppression good, thereby, obtaining swift and violent development recently and in the vibration control in fields such as lathe, turbomachinery, robot, automobile, space shuttle and tall building, obtaining using widely about the research of collisional damping.At present, representational collisional damping mainly comprises: collisional damping of monomer collisional damping, steamed buns stuffed with sweetened bean paste collisional damping, multiple body collision damping, impact of particles damping, nonobstructive impact of particles damping (NOPD), band particle vibration damping agent or the like.
In impact damper,---impact damper of band elastic buffer and utilize the damper of the plastic impact principle design---impact damper of band particle vibration damping agent that utilizes the damper of elastic impact principle design has all been obtained good effect but has all been had shortcoming.The advantage of impact damper of band elastic buffer is by pasting elastic cord breaker in that wall is inboard, thereby has reduced the acceleration peak value in impactor and the wall collision process effectively, has reduced the impact to main system; Shortcoming is that elastic impact does not really consume vibrational energy, but it is temporarily transferred in other mode, so energy finally can turn back in the main system greatly, even amplifies vibratory response in resonance and subresonance scope.The particle that the impact damper of band particle vibration damping agent utilizes the strong bump of impactor and wall to make and is clipped in therebetween produces plastic deformation, thereby can for good and all consume a large amount of vibrational energies; But shortcoming is can't avoid colliding the acceleration peak value of generation effectively and to the impact of main system.As can be seen from the above analysis: the impact damper of two kinds of different vibration attenuation mechanisms, advantage separately be the other side's shortcoming exactly again.
Summary of the invention
The invention discloses a kind of flexibly mounted particles-impact damper of being with, it can overcome the effectively shortcoming of dissipates vibration energy of conventional butt damper, the impact damper that can overcome band particle vibration damping agent again produces the shortcoming of too high acceleration peak value to main system, the present invention not only reduces the acceleration in the collision process effectively, reduce impact, and can consume the vibrational energy of main system to greatest extent main system; Reduce the once more transmission of energy, the influence that alleviates higher harmonics and subharmonic to main system.
A kind ofly be with flexibly mounted particles-impact damper, particles-impact damper inside has the elasticity energy accumulation member and plasticity is impacted the power consumption member; It is characterized in that: described particles-impact damper is connected with controlled main system through yielding support; The natural frequency of vibration of particles-impact damper is not more than the natural frequency of vibration of controlled main system.
Described yielding support can be helical spring, leaf spring or elastic insert; Its flexibly mounted unrestricted motion direction is consistent with the direction of vibration of controlled main system.
Described elasticity energy accumulation member can be impactor and container; It can be particle and one or more impactor that plasticity is impacted the power consumption member, is contained in simultaneously in the container, forms particles-impact damper.
The container of particles-impact damper can be spherical or cylindrical; Impactor can simultaneously consistently with container be spherical or cylindrical; Particle can be metallic material such as copper powder, also can be nonmetallic material such as graphite etc.
When controlled main system direction of vibration is uncertain, the container and the impactor of particles-impact damper are selected sphere for use, be connected with controlled main system through yielding support, this moment, particles-impact damper was multidirectional damper, many group yielding supports should be set on the particles-impact damper, and every group of yielding support is connected with controlled main system respectively.
When direction of vibration is determined the container of particles-impact damper and impactor preferably select for use cylindrical, this moment particles-impact damper be one-way damper; Particles-impact damper is connected with controlled main system through at least one yielding support.
Particle should preferably can reach 1/100 below 1/10 with the diameter ratio of impactor.
The present invention is simple in structure, on the basis of the impact damper of band particle vibration damping agent, has changed the Placement with main structure, is connected by being fixed on to change on the main structure with main structure elasticity.Kept fully with flexibly mounted particles-impact damper that the strong bump of impactor and wall makes particle generation plastic deformation and the fracture that is clipped in therebetween in the impact damper of band particle vibration damping agent, thereby permanently consume the advantage of a large amount of vibrational energies, utilize flexibly mounted accumulation of energy effect again simultaneously and prolong time of collision, reduce the impact of damper effectively main system.Moreover, the vibration of damper has also been amplified in flexibly mounted existence, makes that the bump of impactor is stronger, causes the plastic deformation of particle and fracture more violent, obtains better effectiveness in vibration suppression.
Great advantage of the present invention and good effect are: (1) reduces the acceleration in the collision process effectively, reduces the impact to main system; (2) consume the vibrational energy of main system to greatest extent; (3) reduce the once more transmission of energy to main system, the influence that alleviates higher harmonics and subharmonic.
The present invention is particularly useful for the vibration control of the nonlinear system that frequency is low, mode is intensive.
Description of drawings
Fig. 1 is the structural representation of one-way damper among the present invention;
Fig. 2 is the structural representation of multidirectional damper among the present invention.
1. support spring, 2. container, 3. impactor, 4. particle, 5. controlled main system.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described, but present embodiment is not limited to the present invention, every employing similarity method of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
A kind ofly be with flexibly mounted particles-impact damper, the one-way damper structure comprises yielding support, particles-impact damper and controlled main system 5 as shown in Figure 1.The direction of vibration of the controlled main system 5 of present embodiment is determined vibration longitudinally, and yielding support is selected support spring 1 for use, and the container 2 and the impactor 3 of particles-impact damper are selected for use cylindrical; Impactor is selected cylindrical one; Particle is selected graphite for use, and particle is 1/100 with the diameter ratio of impactor.
Particles-impact damper has two ends to be connected with controlled main system 5 through support spring 1 respectively; And the unrestricted motion direction of support spring 1 is consistent with the direction of vibration of controlled main system 5; The natural frequency of vibration of particles-impact damper is not more than the natural frequency of vibration of controlled main system.
When controlled main system 5 is longitudinally vibrated, the vibration of controlled main system 5 is passed to airtight container 2 after amplifying by support spring 1, the vibration of container causes the strong collision of generation between impactor 3 and the container wall, make the particle 4 that is clipped in therebetween produce plastic deformation and fracture, thereby sponge a large amount of vibrational energies; Support spring 1 has prolonged time of collision simultaneously, has reduced the impact force of particles-impact damper to controlled main system 5.
When controlled main system 5 direction of vibration are uncertain, multidirectional damper can adopt structure shown in Figure 2, the container 2 and the impactor 3 of particles-impact damper are selected sphere for use, and many group support springs should be set on the particles-impact damper this moment, and every group of support spring is connected with controlled main system 5 respectively.
Vibrate when strong when controlled main system, can a plurality of particles-impact dampers be set simultaneously at different parts, each particles-impact damper all is connected with controlled main system through yielding support.
Be the effectiveness in vibration suppression that obtains, the present invention provides the following determination of main parameters method of particles-impact damper:
(1) shape: the shape of container is relevant with direction of vibration, when direction of vibration is determined, can adopt hydrostatic column, otherwise should adopt bulge; The circular impact device can be used for the container of arbitrary shape, and cylindrical impactor generally only is used for hydrostatic column;
(2) direction: the installation direction of hydrostatic column generally adopts the longitudinal axis direction parallel with direction of vibration;
(3) mass ratio: the mass ratio of particle and impactor is generally about 1/10; The gross mass of impactor and the mass ratio of main system generally are no more than 0.1;
(4) ratio of rigidity: spring rate should make the natural frequency of vibration of damper coordinate mutually with the natural frequency of vibration of main system;
(5) position: damper should be placed in the bigger position of vibratory response;
(6) quantity: the quantity of damper can be one, also can be a plurality ofly, determines according to the vibratory response of main system.
The present invention is applicable to the vibration control of the nonlinear system that frequency is low, mode is intensive.
Claims (2)
1. be with flexibly mounted particles-impact damper for one kind, particles-impact damper inside has the elasticity energy accumulation member and plasticity is impacted the power consumption member; It is characterized in that: described particles-impact damper is connected with controlled main system through yielding support; The natural frequency of vibration of particles-impact damper is not more than the natural frequency of vibration of controlled main system.
2. according to claim 1ly be with flexibly mounted particles-impact damper, it is characterized in that: described yielding support can be helical spring, leaf spring or elastic insert; Its flexibly mounted unrestricted motion direction is consistent with the direction of vibration of controlled main system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100528721A CN101576138A (en) | 2009-06-11 | 2009-06-11 | Particles-impact damper with elastic support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100528721A CN101576138A (en) | 2009-06-11 | 2009-06-11 | Particles-impact damper with elastic support |
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| CN101576138A true CN101576138A (en) | 2009-11-11 |
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| CNA2009100528721A Pending CN101576138A (en) | 2009-06-11 | 2009-06-11 | Particles-impact damper with elastic support |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425243A (en) * | 2011-10-12 | 2012-04-25 | 北京工业大学 | Mass tuned grain damper |
| CN103114658A (en) * | 2013-02-05 | 2013-05-22 | 北京工业大学 | Ball-shaped cabin tuning type particle camper |
| CN105133743A (en) * | 2015-09-24 | 2015-12-09 | 同济大学 | Nonlinear tunable mass and liquid damper |
| CN105221620A (en) * | 2015-10-12 | 2016-01-06 | 上海理工大学 | Electromagnetic type flutter impact damper |
| CN105927703A (en) * | 2016-06-08 | 2016-09-07 | 中国船舶重工集团公司第七二五研究所 | Power vibrator absorber with springs and semicircular weight stacks |
| US9521753B1 (en) | 2014-03-04 | 2016-12-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Vibration damping circuit card assembly |
| CN106522400A (en) * | 2016-12-22 | 2017-03-22 | 浙江建科减震科技有限公司 | Multi threshold value control model of tuned mass damper |
| CN108087492A (en) * | 2016-11-23 | 2018-05-29 | 上海海立电器有限公司 | A kind of compressor |
| US10021779B1 (en) | 2017-11-28 | 2018-07-10 | TopLine Coporation | Quick response particle damper for printed circuit boards and planar surfaces |
| US10041558B1 (en) | 2017-10-06 | 2018-08-07 | Topline Corporation | Tunable apparatus for adjusting effective performance of particle impact damper |
| CN109199661A (en) * | 2018-07-19 | 2019-01-15 | 同济大学 | A kind of wrist based on particle damping trembles and inhibits device |
| CN109268429A (en) * | 2018-11-30 | 2019-01-25 | 北京宇航系统工程研究所 | A kind of non-concatenated simple and reliable whole star damper |
| CN110422299A (en) * | 2019-07-02 | 2019-11-08 | 哈尔滨工程大学 | A kind of collision mass damper PTMD device of hull global vibration control |
| US10704639B2 (en) | 2018-08-14 | 2020-07-07 | Topline Corporation | Unidirectional particle damper for printed circuit boards and planar surfaces |
| CN111700791A (en) * | 2020-06-23 | 2020-09-25 | 上海理工大学 | Waist massage device |
| CN112934870A (en) * | 2021-04-27 | 2021-06-11 | 湖州华特不锈钢管制造有限公司 | Inner hole cleaning device for cold-drawn steel pipe |
-
2009
- 2009-06-11 CN CNA2009100528721A patent/CN101576138A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425243A (en) * | 2011-10-12 | 2012-04-25 | 北京工业大学 | Mass tuned grain damper |
| CN103114658A (en) * | 2013-02-05 | 2013-05-22 | 北京工业大学 | Ball-shaped cabin tuning type particle camper |
| US9521753B1 (en) | 2014-03-04 | 2016-12-13 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Vibration damping circuit card assembly |
| CN105133743B (en) * | 2015-09-24 | 2017-04-05 | 同济大学 | Non-linear tunable matter fluid damper |
| CN105133743A (en) * | 2015-09-24 | 2015-12-09 | 同济大学 | Nonlinear tunable mass and liquid damper |
| CN105221620A (en) * | 2015-10-12 | 2016-01-06 | 上海理工大学 | Electromagnetic type flutter impact damper |
| CN105927703A (en) * | 2016-06-08 | 2016-09-07 | 中国船舶重工集团公司第七二五研究所 | Power vibrator absorber with springs and semicircular weight stacks |
| CN108087492A (en) * | 2016-11-23 | 2018-05-29 | 上海海立电器有限公司 | A kind of compressor |
| CN106522400A (en) * | 2016-12-22 | 2017-03-22 | 浙江建科减震科技有限公司 | Multi threshold value control model of tuned mass damper |
| CN106522400B (en) * | 2016-12-22 | 2019-03-19 | 浙江建科减震科技有限公司 | Multi-threshold control type tuned mass damper |
| US10041558B1 (en) | 2017-10-06 | 2018-08-07 | Topline Corporation | Tunable apparatus for adjusting effective performance of particle impact damper |
| US10021779B1 (en) | 2017-11-28 | 2018-07-10 | TopLine Coporation | Quick response particle damper for printed circuit boards and planar surfaces |
| CN109199661A (en) * | 2018-07-19 | 2019-01-15 | 同济大学 | A kind of wrist based on particle damping trembles and inhibits device |
| US10704639B2 (en) | 2018-08-14 | 2020-07-07 | Topline Corporation | Unidirectional particle damper for printed circuit boards and planar surfaces |
| CN109268429A (en) * | 2018-11-30 | 2019-01-25 | 北京宇航系统工程研究所 | A kind of non-concatenated simple and reliable whole star damper |
| CN110422299A (en) * | 2019-07-02 | 2019-11-08 | 哈尔滨工程大学 | A kind of collision mass damper PTMD device of hull global vibration control |
| CN111700791A (en) * | 2020-06-23 | 2020-09-25 | 上海理工大学 | Waist massage device |
| CN112934870A (en) * | 2021-04-27 | 2021-06-11 | 湖州华特不锈钢管制造有限公司 | Inner hole cleaning device for cold-drawn steel pipe |
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Open date: 20091111 |