CN105332442A - Particle damper with nonlinear rigidity - Google Patents
Particle damper with nonlinear rigidity Download PDFInfo
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- CN105332442A CN105332442A CN201510742973.7A CN201510742973A CN105332442A CN 105332442 A CN105332442 A CN 105332442A CN 201510742973 A CN201510742973 A CN 201510742973A CN 105332442 A CN105332442 A CN 105332442A
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Abstract
The invention relates to a particle damper with nonlinear rigidity and belongs to the technical field of structural engineering vibration damping. The particle damper comprises a bottom sliding cap, a sliding friction pair, a connecting spring, a damping box, damping particles, partition boards, fixing bolts and a buffer material. The bottom sliding cap is connected with a vibration damping structure through the fixing bolts, supports the upper damping box and limits it from lateral displacement. The particles are disposed in the damping box. The inside of the damping box is divided into multiple partitions by the partition boards. The connecting spring vertically connects the bottom sliding cap and the damping box. The damping box rubs along a sliding face during vibration to cause system mechanical energy dissipation, the internal damping particles collide and rub to further dissipate system vibrational energy, the connecting spring on the other hand can prevent the damping box from excessively relatively move, nonlinear control force and damper's restoring force are provided for a structure, and vibration damping effect is further improved; the particle damper has more advantages than a traditional single-dissipation damper.
Description
Technical field
The present invention relates to a kind of granule damper with non-linear rigidity.Belong to Construction Anti-earthquake and antivibration area.
Background technology
Along with people's deepening continuously to structural seismic anti-wind research, the structure resistance to shock ever more important of building.Damper is the device of the resistance providing motion, depletion kinergety.After last century the seventies, people start progressively these technology to be turned to apply to the Structural Engineerings such as building, bridge, railway from the field such as automobile, space flight and aviation, and development is very rapid.Tradition vibration absorber, as tuned mass damper etc., makes structural vibration decay fairly obvious, but it to there is vibration damping frequency band narrow, energy dissipation capacity is limited and damper arranges the defects such as price is high.
Granule damper technology comes from Aero-Space and mechanical vibration control field, that a kind of passive Passive Control technology is as a kind of novel energy dissipation and damping control technology, have to original system change little, additional mass is little, damping bandwidth, multidimensional control ability are good, can apply to adverse circumstances and the advantages such as flexible arrangement, is in starting developing stage in smart control for civil engineering structures.
Nonlinear energy trap is the novel damping device that people obtain by introducing nonlinear characteristic in traditional dynamic vibration absorber.The frequency that nonlinear energy trap is not fixed, has non-linear rigidity and certain damping characteristic.In vibration processes, the targeted energy transmission that nonlinear energy trap occurs makes vibrational energy irreversibly be passed to oscillator with one, can not turn back to original system, and impel energy dissipation by the damping action of self oscillator.These features of nonlinear energy trap make it effectively can suppress random vibration, become the most rising a kind of vibration absorber.
Summary of the invention
The object of the present invention is to provide a kind of granule damper with non-linear rigidity.
A kind of granule damper with non-linear rigidity that the present invention proposes, comprise end slip cushion cap 1, sliding friction pair 2, linking springs 3, damping case 4, damping particles 5, demarcation strip 6, set bolt 7 and padded coaming 8, wherein: end slip cushion cap 1 bottom is connected with target vibration-proof structure by set bolt 7, top has groove, is provided with matrix sliding friction pair 2 in described groove; Be connected with sliding friction pair 2 top bottom damping case 4, damping case 4 inside arranges damping particles 5 and demarcation strip 6, damping case 4 interior separation is some child partitions by demarcation strip 6 according to the actual requirements, several damping particles 5 are placed in each child partition, end slip cushion cap 1 two ends are connected respectively by linking springs 3 with damping case 4 both sides, and described linking springs 3 is for being arranged vertically; Padded coaming 8 is arranged on damping case 4 and demarcation strip 6 inwall; Due to top damping case 4 and the Action of Gravity Field of damping particles 5 during vibration, in sliding friction pair 2 upward sliding process, consume granule damper vibrational energy; Damping particles 5 collides when vibrating, rub and rolls, and consumes granule damper vibrational energy further; Padded coaming 8 improves energy consumption effect when damping particles 5 collides with damping chamber interior wall further; There is non-linear change in length when vibrating in described linking springs 3, produces the nonlinear Control power of structure and the restoring force of damper self.
In the present invention, the soft foam material of macromolecule polyurethane selected by padded coaming 8.
In the present invention, sliding friction pair 2 selected materials is the friction material had compared with low-friction coefficient and good abrasion resistance, as teflon coating layer.
In the present invention, the optional steel of damping particles 5 material, copper or there is the macromolecular material of certain frictional behaviour.Selected particle diameter is 5mm ~ 30mm, also can various particle diameter mix and match, and horizontal projected area accounts for 50% ~ 80% of respective partition.
In the present invention, damping case transverse direction or longitudinal subdivision can be some child partitions by demarcation strip 6 according to the actual requirements.
Advantage of the present invention is: the oscillation damping and energy dissipating mechanism combining nonlinear energy trap, the advantages such as vibration damping bandwidth, energy dissipation are fast, compared with conventional damper, there is universality, there is particle power consumption simultaneously, the multiple power consumption means such as friction energy-dissipating, without the need to extra power supply, installation and maintenance are relatively simple, have good applicability and economy.
Accompanying drawing explanation
Fig. 1 is lateral view of the present invention;
Fig. 2 is generalized section of the present invention;
Fig. 3 is top view of the present invention;
Fig. 4 is the sectional drawing of damping case of the present invention;
Number in the figure: 1 end slip cushion cap, 2 sliding friction pairs, 3 linking springs, 4 damping casees, 5 damping particles, 6 demarcation strips, 7 set bolts, 8 padded coamings.
Detailed description of the invention
Be described further below in conjunction with accompanying drawing and example.
Embodiment 1: as shown in the figure, the present invention includes end slip cushion cap 1, sliding friction pair 2, linking springs 3, damping case 4, damping particles 5, demarcation strip 6, set bolt 7 and padded coaming 8.End slip cushion cap 1 is steel, and fixing structurally by set bolt 7, wherein bolt can select frictional high-strength bolts.Be sliding friction pair 2 between end slip cushion cap 1 and damping case 4, the selection of material is teflon coating layer, and friction factor is about 0.07 ~ 0.09, when end slip cushion cap 1, with damping case 4, relative displacement occurs, due to the effect of upper component gravity, make sliding friction pair 2 that friction energy-dissipating occur.Damping case 4 is welded for thickness 5mm corrosion resistant plate, and size is determined according to practical application, and inwall is provided with the padded coaming 8 that material is soft polyurethane foam.Demarcation strip 6 is separated mode and is determined according to actual conditions, in figure, separation mode is the one that practice is implemented, and demarcation strip inwall also arranges padded coaming 8, when particle and inwall collide, padded coaming 8 can further improve energy dissipation, has the function of certain noise reduction sound-absorbing simultaneously.Particle 5 selects particle diameter to be the copper ball of 5mm ~ 30mm, and filling rate is 50% ~ 80%, under wind or geological process, between the internally-damped particle of damper cavity, carries out frictional impact power consumption between particle and inwall.Linking springs 3 two ends and end slip cushion cap 1, damping case 4 are hinged and connected, and linking springs 3 is for being arranged vertically, when there is relative displacement due to vibration in end slip cushion cap 1, damping case 4, linking springs 3 is made to occur, relative to the non-linear change in length of damping case 4 horizontal movement, to provide nonlinear restoring force.
Claims (5)
1. one kind has the granule damper of non-linear rigidity, comprise end slip cushion cap (1), sliding friction pair (2), linking springs (3), damping case (4), damping particles (5), demarcation strip (6), set bolt (7) and padded coaming (8), it is characterized in that: end slip cushion cap (1) bottom is connected with target vibration-proof structure by set bolt (7), top has groove, is provided with matrix sliding friction pair (2) in described groove; Damping case (4) bottom is connected with sliding friction pair (2) top, damping case (4) inside arranges damping particles (5) and demarcation strip (6), damping case (4) interior separation is some child partitions by demarcation strip (6) according to the actual requirements, several damping particles (5) are placed in each child partition, end slip cushion cap (1) two ends are connected respectively by linking springs (3) with damping case (4) both sides, and described linking springs (3) is for being arranged vertically; Padded coaming (8) is arranged on damping case (4) and demarcation strip (6) inwall; Due to top damping case (4) and the Action of Gravity Field of damping particles (5) during vibration, in sliding friction pair (2) upward sliding process, consume granule damper vibrational energy; Damping particles (5) collides when vibrating, rub and rolls, and consumes granule damper vibrational energy further; Padded coaming (8) improves energy consumption effect when damping particles (5) collides with damping chamber interior wall further; There is non-linear change in length during described linking springs (3) vibration, produce the nonlinear Control power of structure and the restoring force of damper self.
2. the granule damper with non-linear rigidity according to claim 1, is characterized in that: the soft foam material of macromolecule polyurethane selected by padded coaming (8).
3. the granule damper with non-linear rigidity according to claim 1, is characterized in that: sliding friction pair (2) selected materials is the friction material had compared with low-friction coefficient and good abrasion resistance.
4. the granule damper with non-linear rigidity according to claim 1, it is characterized in that: damping particles (5) material adopts steel, copper or has the macromolecular material of certain frictional behaviour, selected particle diameter is 5mm ~ 30mm, various particle diameter can mix and match, and damping particles (5) horizontal projected area accounts for 50% ~ 80% of respective sub-partitions.
5. the granule damper with non-linear rigidity according to claim 1, is characterized in that: damping case transverse direction or longitudinal subdivision can be some child partitions by demarcation strip (6) according to the actual requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510742973.7A CN105332442B (en) | 2015-11-05 | 2015-11-05 | Granule damper with non-linear rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510742973.7A CN105332442B (en) | 2015-11-05 | 2015-11-05 | Granule damper with non-linear rigidity |
Publications (2)
| Publication Number | Publication Date |
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| CN105332442A true CN105332442A (en) | 2016-02-17 |
| CN105332442B CN105332442B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510742973.7A Expired - Fee Related CN105332442B (en) | 2015-11-05 | 2015-11-05 | Granule damper with non-linear rigidity |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012709A (en) * | 2016-07-14 | 2016-10-12 | 同济大学 | Composite vibration isolation device based on particle damping and memory alloy material |
| CN107327531A (en) * | 2017-08-31 | 2017-11-07 | 重庆远风机械有限公司 | Shock absorber for compressor vibration damping |
| CN109461433A (en) * | 2018-12-31 | 2019-03-12 | 桂林电子科技大学 | Meet the active control method of production scene Low Frequency Noise Generator and device of ergonomics |
| CN110685212A (en) * | 2019-09-23 | 2020-01-14 | 同济大学 | External granule damping device of suspension cable |
| CN114233305A (en) * | 2021-11-02 | 2022-03-25 | 中铁隧道股份有限公司 | Shield tunneling machine capable of increasing particle damping |
| CN114607720A (en) * | 2022-03-17 | 2022-06-10 | 江苏科技大学 | Particle damper with built-in barrier network |
| CN114658790A (en) * | 2022-03-18 | 2022-06-24 | 苏州东菱智能减振降噪技术有限公司 | Line spectrum frequency reduction device |
| CN115110656A (en) * | 2022-07-26 | 2022-09-27 | 同济大学 | High-order energy consumption enhanced nonlinear energy trap |
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| JPH1096280A (en) * | 1996-09-20 | 1998-04-14 | Matsushita Electric Works Ltd | Vibration damper for pole |
| CN201502113U (en) * | 2009-09-25 | 2010-06-09 | 北京工业大学 | Drum-type omnibearing tuning shock absorbing mass damper |
| CN202658759U (en) * | 2012-05-06 | 2013-01-09 | 上海路博橡胶减振器技术有限公司 | Tuned mass damper |
| CN103306316A (en) * | 2013-05-09 | 2013-09-18 | 东北林业大学 | Three-dimensional composite friction pendulum vibration isolator based on nonlinear energy trap |
| CN204226528U (en) * | 2014-11-13 | 2015-03-25 | 孙艳秋 | The multi-faceted vibration damping equipment of pipe conveying fluid joint |
-
2015
- 2015-11-05 CN CN201510742973.7A patent/CN105332442B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1096280A (en) * | 1996-09-20 | 1998-04-14 | Matsushita Electric Works Ltd | Vibration damper for pole |
| CN201502113U (en) * | 2009-09-25 | 2010-06-09 | 北京工业大学 | Drum-type omnibearing tuning shock absorbing mass damper |
| CN202658759U (en) * | 2012-05-06 | 2013-01-09 | 上海路博橡胶减振器技术有限公司 | Tuned mass damper |
| CN103306316A (en) * | 2013-05-09 | 2013-09-18 | 东北林业大学 | Three-dimensional composite friction pendulum vibration isolator based on nonlinear energy trap |
| CN204226528U (en) * | 2014-11-13 | 2015-03-25 | 孙艳秋 | The multi-faceted vibration damping equipment of pipe conveying fluid joint |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012709A (en) * | 2016-07-14 | 2016-10-12 | 同济大学 | Composite vibration isolation device based on particle damping and memory alloy material |
| CN106012709B (en) * | 2016-07-14 | 2017-09-26 | 同济大学 | A kind of compound isolation mounting damped based on particle with memory alloy material |
| CN107327531A (en) * | 2017-08-31 | 2017-11-07 | 重庆远风机械有限公司 | Shock absorber for compressor vibration damping |
| CN109461433A (en) * | 2018-12-31 | 2019-03-12 | 桂林电子科技大学 | Meet the active control method of production scene Low Frequency Noise Generator and device of ergonomics |
| CN110685212A (en) * | 2019-09-23 | 2020-01-14 | 同济大学 | External granule damping device of suspension cable |
| CN110685212B (en) * | 2019-09-23 | 2020-07-28 | 同济大学 | External granule damping device of suspension cable |
| CN114233305A (en) * | 2021-11-02 | 2022-03-25 | 中铁隧道股份有限公司 | Shield tunneling machine capable of increasing particle damping |
| CN114233305B (en) * | 2021-11-02 | 2024-01-02 | 中铁隧道股份有限公司 | Shield tunneling machine capable of increasing particle damping |
| CN114607720A (en) * | 2022-03-17 | 2022-06-10 | 江苏科技大学 | Particle damper with built-in barrier network |
| CN114607720B (en) * | 2022-03-17 | 2024-04-19 | 江苏科技大学 | Particle damper with built-in barrier network |
| CN114658790A (en) * | 2022-03-18 | 2022-06-24 | 苏州东菱智能减振降噪技术有限公司 | Line spectrum frequency reduction device |
| CN115110656A (en) * | 2022-07-26 | 2022-09-27 | 同济大学 | High-order energy consumption enhanced nonlinear energy trap |
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|---|---|
| CN105332442B (en) | 2017-06-13 |
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