CN108425983B - Rigidity damping adjustable boundary system suitable for multipoint earthquake motion test of vibrating table - Google Patents
Rigidity damping adjustable boundary system suitable for multipoint earthquake motion test of vibrating table Download PDFInfo
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- CN108425983B CN108425983B CN201810305001.5A CN201810305001A CN108425983B CN 108425983 B CN108425983 B CN 108425983B CN 201810305001 A CN201810305001 A CN 201810305001A CN 108425983 B CN108425983 B CN 108425983B
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- force guide
- guide device
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- 238000013016 damping Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 13
- 238000004088 simulation Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- 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
- F16F13/02—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs damping by frictional contact between the spring and braking means
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- 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
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/532—Electrorheological [ER] fluid dampers
Abstract
The invention provides a rigidity damping adjustable boundary system suitable for a multipoint earthquake motion test of a vibrating table. The force guide device is of a cylindrical structure with an opening at the lower part and comprises a force guide device, a contact cylinder, a horizontal force guide plate and a vertical force guide plate; the force guide device comprises a force guide device cover, a force guide device outer wall and a force guide device inner wall fixed in the force guide device cover and provided with an opening at the lower part, wherein the horizontal force guide plate and the vertical force guide plate are fixedly connected to the force guide device outer wall; the contact cylinder is arranged in the inner wall of the force guide device; the stiffness control device is of a cylindrical structure and is arranged in the contact cylinder and comprises a stiffness controller, a sheet annular spring and a disc spring; the anti-seepage tarpaulin is fixedly connected to the lower part of the force guide device and the inside of the rigidity controller in a closed mode, is connected with the outer periphery of the anti-seepage bearing in a sealing mode, and is connected with the inner periphery of the inner wall of the force guide device in a sealing mode. The invention can simultaneously adjust the multidirectional stiffness of the spring, and can be applied to the simulation of the artificial boundary in a multipoint earthquake motion test.
Description
Technical Field
The invention relates to the technical field of earthquake test devices, in particular to an artificial boundary device of a structural earthquake simulation vibrating table.
Background
At present, a mechanical type, an electromagnetic type and a servo hydraulic type are generally adopted for a seismic vibrating table for a structural seismic test, but the seismic vibrating table is often used for seismic vibration simulation of a small structure. For the seismic response analysis of the large-span structure, traveling wave effects, coherence effects, local field effects and the like in the seismic propagation process need to be considered, so that time and space changes of the earthquake motion must be considered, and the large-span structure is multi-dimensional and multi-point earthquake motion excitation. However, in the multipoint earthquake motion test, the existing earthquake vibration table is often multi-dimensional consistent excitation and cannot be used for earthquake motion simulation analysis of a large-span structure, and how to realize that the earthquake motion simulation of the large-span structure is closest to real earthquake motion is a problem to be solved currently.
Disclosure of Invention
The invention aims to provide a rigidity damping adjustable boundary system suitable for a multipoint earthquake motion test of a vibrating table, which mainly realizes the functions of multidirectional rigidity and damping adjustment, so as to perform distributed artificial boundary simulation and solve the problem that the vibrating table is suitable for the multipoint earthquake motion test of a large-span structure. The technical proposal is as follows:
a rigidity damping adjustable boundary system suitable for a multipoint earthquake test of a vibrating table comprises a force guiding device, electrorheological fluid, a rigidity control device, a damping control device, a positive plate, a negative plate and an impermeable tarpaulin, and is characterized in that,
the force guide device is of a cylindrical structure with an opening at the lower part and comprises a force guide device, a contact cylinder, a horizontal force guide plate and a vertical force guide plate; the force guide device comprises a force guide device cover, a force guide device outer wall and a force guide device inner wall fixed in the force guide device cover and provided with an opening at the lower part, wherein the horizontal force guide plate and the vertical force guide plate are fixedly connected to the force guide device outer wall; the contact cylinder is arranged in the inner wall of the force guide device;
the stiffness control device is of a cylindrical structure and is arranged in the contact cylinder and comprises a stiffness controller, a sheet-shaped annular spring and a disc spring; the stiffness controller is of a cylindrical structure and comprises a control shaft positioned in the middle, a top, a side wall and a regulator positioned at the lower part and fixedly connected with the control shaft, wherein an outlet is formed in the top of the stiffness controller, a long and narrow outlet is also formed in the side wall, one ends of the sheet-shaped annular springs and the belleville springs are arranged in the stiffness controller and are respectively connected to the lateral direction and the upper part of the control shaft, and the other ends of the sheet-shaped annular springs and the belleville springs penetrate through the side wall of the stiffness controller and the outlet formed in the top of the stiffness controller respectively, encircle the side wall of the stiffness controller and are arranged on the top of the stiffness controller; simultaneously, the outer end part of the flaky annular spring is fixedly connected to the inner wall of the contact cylinder; rotating a regulator at the bottom of the stiffness controller to screw part of the sheet annular springs and part of the belleville springs into the stiffness controller and compressing the sheet annular springs and part of the belleville springs into the stiffness controller, wherein an impermeable bearing is arranged at the lower part of a control shaft;
the anti-seepage tarpaulin is fixedly connected to the lower part of the force guide device and the inside of the rigidity controller in a closed mode, is connected with the outer periphery of the anti-seepage bearing in a sealing mode, is connected with the inner periphery of the inner wall of the force guide device in a sealing mode, and is located in a cavity surrounded by the inner wall of the force guide device and the anti-seepage tarpaulin;
the rigidity control device is positioned at the upper part of the anti-seepage bearing, is arranged in the force guide device, is immersed in electrorheological fluid, and is positioned at the lower part of the anti-seepage bearing and penetrates out from the lower opening of the force guide device;
two sides of the inner wall of the force guide are respectively provided with a containing space for containing the positive plate and the negative plate; and the damping control device is used for adjusting the voltage applied to the positive plate and the negative plate.
Preferably, the horizontal force guide plates are longitudinally distributed along the force guide, horizontally nested and fixedly connected to the outer wall of the force guide;
the vertical force guide plates are distributed in a cross shape along the outer wall of the force guide device, vertically embedded and fixedly connected between the horizontal force guide plates.
The section of the outer wall of the force guide is round, and the section of the inner wall of the force guide is square.
The invention has the advantages and positive effects that:
firstly), part of the sheet annular springs and the disc springs are screwed into and compressed in the sheet stiffness controller and the disc stiffness controller by controlling the regulator at the bottom of the stiffness control device, so that the length of the external springs is changed, and the multidirectional stiffness adjustable function is realized.
Secondly), the electric field intensity is changed and the viscosity of the electrorheological fluid is changed by adjusting the voltage regulator, so that the function of controlling the multidirectional damping coefficient is realized.
And thirdly), the device can be designed to simultaneously adjust multidirectional rigidity and damping, is simple to manufacture, and can be applied to a multipoint earthquake motion test to simulate an artificial boundary.
Drawings
Fig. 1 is a front view of the device.
Fig. 2 is a top view of the present device.
Fig. 3 is a split three-dimensional schematic diagram of the device.
In the figure: 1. a force guiding device; 101. a force guide cover; 102. a contact cylinder; 103. a force guide; 1031. the inner wall of the force guide device; 1032. the outer wall of the force guide device; 104. a vertical force guide plate; 105. a horizontal force guide plate; 106. an accommodating space; 2. electrorheological fluid; 3. a rigidity control device; 301. a belleville spring; 302. a sheet-like annular spring; 303. a stiffness controller; 304. an impermeable bearing; 305. a regulator; 306. the controller is covered; 307. a control shaft; 4. damping control means; 401. a rectifier; 402. a power supply; 403. a voltage regulator; 404. a wire; 5. a positive and negative plate; 6. and (5) impermeable tarpaulin.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is made to the following examples which are illustrated in the accompanying drawings.
The detailed description is as follows: a rigidity damping adjustable boundary system suitable for a multipoint earthquake motion test of a vibrating table comprises a force guiding device 1, electrorheological fluid 2, a rigidity control device 3, a damping control device 4, a positive plate 5, a negative plate 5 and an impermeable tarpaulin 6.
The whole force guide device 1 is of a cylindrical structure and comprises a force guide 103, a contact cylinder 102, a horizontal force guide plate 105 and a vertical force guide plate 104; the force guide 103 comprises a force guide cover 101, a cylindrical force guide outer wall 1032 and a lower opening square force guide inner wall 1031 secured therein. The horizontal force guide plate 105 and the vertical force guide plate 104 are fixedly connected to the outer wall 1032 of the force guide, and the contact cylinder 102 is nested in the force guide 103; the inner surface of the force guide cover 101 is smooth and screwed on the top of the force guide 103; the force guide device is a cylindrical structure with a circular cross section of the outer wall 1032 and a square cross section of the inner wall 1031, and an opening at the upper end of the force guide device 103 is fully meshed with the cover of the force guide device 101; meanwhile, two accommodating spaces 106 are reserved on two sides of the force guide 103; the two accommodating spaces 106 are flat cuboid chambers at two sides in the force guide 103; the contact cylinder 102 is of a cylindrical structure with the upper and lower ends fully opened, and the inner and outer wall surfaces of the contact cylinder 102 are smooth and are just nested in the force guide 103; the horizontal force guide plates 105 are longitudinally distributed along the force guide 103, horizontally nested and fixedly connected to the outer wall 1032 of the force guide; the vertical force guide plates 104 are distributed in a cross shape along the outer 1032 wall of the force guide device, and vertically embedded and fixedly connected between the horizontal force guide plates 105.
The rigidity control device 3 comprises a rigidity controller 303, a sheet-shaped annular spring 302 and a belleville spring 301; the stiffness controller 303 is in a cylindrical structure, one end of the sheet-shaped annular spring 302 and one end of the belleville spring 301 are arranged in the stiffness controller 303, the other end of the sheet-shaped annular spring penetrates out of the side wall and the reserved outlet at the top of the stiffness controller 303 respectively, surrounds the side wall of the stiffness controller 303 and is arranged on the top of the stiffness controller 303; the outer end part of the flaky annular spring 302 is fixedly connected to the inner wall of the contact cylinder 102; threads are reserved on the inner side wall of the controller closing cover 306 at the bottom of the rigidity controller 303, so that external equipment can be installed; and an impermeable bearing 304 whose surface is impermeable-treated is installed at the lower portion of the control shaft 307.
The anti-seepage tarpaulin 6 is fixedly connected to the lower part of the force guide device 1 and the inside of the rigidity controller 303 in a closed mode, the anti-seepage tarpaulin 6 is connected with the outer periphery of the anti-seepage bearing 304 in a sealing mode and is connected with the inner periphery of the inner wall 1031 of the force guide device in a sealing mode, and the electrorheological fluid 2 is located in a cavity surrounded by the inner wall 1031 of the force guide device and the anti-seepage tarpaulin 6.
The rigidity control device 3 is positioned at the upper part of the anti-seepage bearing 304, is arranged in the force guide device 1 and immersed in electrorheological fluid 2, the lower part of the anti-seepage bearing 304 penetrates out from the lower opening of the force guide device 1, meanwhile, the positive electrode plate 5 and the negative electrode plate 5 are inserted into and fixed in the accommodating spaces 106 at the two sides of the force guide device 1, and the damping control device 4 is arranged outside the force guide device 1 and welded with the positive electrode plate 5 and the negative electrode plate 5; at this time, the regulator 305 at the bottom of the stiffness control device 3 is rotated, and part of the sheet annular spring 302 and part of the belleville spring 301 are screwed into and compressed in the stiffness controller 303, so that the external spring stiffness of the stiffness controller 303 is changed; simultaneously, an external voltage regulator 403 is regulated to change the field intensity between the positive plate 5 and the negative plate 5 and correspondingly change the viscosity of the electrorheological fluid 2, so as to control the damping coefficient; the acting force of external equipment is transmitted to surrounding soil body by the force guiding device 1 through the combined action of the rigidity control device 3 and the damping control device 4 after adjustment.
The damping control device 4 comprises a power supply 402, a rectifier 401, a voltage regulator 403 and a wire 404; the power supply 402, the rectifier 401, and the voltage regulator 403 connect the positive and negative electrode plates 5 to form a whole through the lead 404.
The rigidity damping adjustable boundary system suitable for the multipoint earthquake motion test of the vibrating table can be used for processing an artificial boundary, and the device is used for burying the whole force guiding device 1 in soil to play a role, and has the following action mechanism: an external device (vibration table) is installed at the bottom end of the controller closing cover 306, at this time, the acting force is directly transmitted to the rigidity control device 3 (not directly transmitted to the force guiding device 1), and meanwhile, the acting force is transmitted to the inner wall 1031 of the force guiding device, the outer wall 1032 of the force guiding device, the vertical force guiding plate 104 and the horizontal force guiding plate 105 through the damping action of the electrorheological fluid 2 (the vibration of the spring is restrained by using the viscosity of the electrorheological fluid 2), and finally, the acting force is uniformly diffused into the soil.
In a preferred embodiment of the present application, the impermeable tarpaulin 6 is fixedly connected to the lower part of the force guiding device 1 and the inside of the stiffness controller 303 in a closed manner. Specifically, the two pieces of the anti-seepage tarpaulin 6 are respectively in a ring shape, and the anti-seepage tarpaulin is just adhered to the inner bottom surface of the force guide 103 and simultaneously adhered to the outer side wall of the rigidity controller 303 by adopting a high-strength adhesive; the other Zhang Fangshen tarpaulin is just adhered to the inner side wall of the rigidity controller 303 and simultaneously adhered to the side wall of the lower anti-seepage bearing 304 of the control shaft 307, and the adhered part is coated with anti-seepage agent.
Preferably, the whole rigidity control apparatus 3 and the surface of the internal components of the force guiding apparatus 1 are subjected to corrosion protection treatment before the electrorheological fluid 2 fills the inside of the force guiding apparatus 1.
Preferably, the positive and negative plates 5 are disposed in the accommodating spaces 106 on both sides of the force guiding device 1, specifically, the positive and negative plates 5 are first nested in the rubber insulation bushing and then disposed in the accommodating spaces 106.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are within the scope of the present invention.
Claims (3)
1. A rigidity damping adjustable boundary system suitable for a multipoint earthquake test of a vibrating table comprises a force guiding device, electrorheological fluid, a rigidity control device, a damping control device, a positive plate, a negative plate and an impermeable tarpaulin, and is characterized in that,
the force guide device is of a cylindrical structure with an opening at the lower part and comprises a force guide device, a contact cylinder, a horizontal force guide plate and a vertical force guide plate; the force guide device comprises a force guide device cover, a force guide device outer wall and a force guide device inner wall fixed in the force guide device cover and provided with an opening at the lower part, wherein the horizontal force guide plate and the vertical force guide plate are fixedly connected to the force guide device outer wall; the contact cylinder is arranged in the inner wall of the force guide device;
the stiffness control device is of a cylindrical structure and is arranged in the contact cylinder and comprises a stiffness controller, a sheet-shaped annular spring and a disc spring; the stiffness controller is of a cylindrical structure and comprises a control shaft positioned in the middle, a top, a side wall and a regulator positioned at the lower part and fixedly connected with the control shaft, wherein an outlet is formed in the top of the stiffness controller, a long and narrow outlet is also formed in the side wall, one ends of the sheet-shaped annular springs and the belleville springs are arranged in the stiffness controller and are respectively connected to the lateral direction and the upper part of the control shaft, and the other ends of the sheet-shaped annular springs and the belleville springs penetrate through the side wall of the stiffness controller and the outlet formed in the top of the stiffness controller respectively, encircle the side wall of the stiffness controller and are arranged on the top of the stiffness controller; simultaneously, the outer end part of the flaky annular spring is fixedly connected to the inner wall of the contact cylinder; rotating a regulator at the bottom of the stiffness controller to screw part of the sheet annular springs and part of the belleville springs into the stiffness controller and compressing the sheet annular springs and part of the belleville springs into the stiffness controller, wherein an impermeable bearing is arranged at the lower part of a control shaft;
the anti-seepage tarpaulin is fixedly connected to the lower part of the force guide device and the inside of the rigidity controller in a closed mode, is connected with the outer periphery of the anti-seepage bearing in a sealing mode, is connected with the inner periphery of the inner wall of the force guide device in a sealing mode, and is located in a cavity surrounded by the inner wall of the force guide device and the anti-seepage tarpaulin;
the rigidity control device is positioned at the upper part of the anti-seepage bearing, is arranged in the force guide device, is immersed in electrorheological fluid, and is positioned at the lower part of the anti-seepage bearing and penetrates out from the lower opening of the force guide device;
two sides of the inner wall of the force guide are respectively provided with a containing space for containing the positive plate and the negative plate; and the damping control device is used for adjusting the voltage applied to the positive plate and the negative plate.
2. The multi-point earthquake motion testing rigidity damping adjustable boundary system according to claim 1, wherein the horizontal force guide plates are longitudinally distributed along the force guide and horizontally nested and fixedly connected to the outer wall of the force guide; the vertical force guide plates are distributed in a cross shape along the outer wall of the force guide device, vertically embedded and fixedly connected between the horizontal force guide plates.
3. The boundary system with adjustable rigidity and damping for multi-point earthquake motion test of claim 1, wherein the section of the outer wall of the force guide is circular, and the section of the inner wall of the force guide is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305001.5A CN108425983B (en) | 2018-04-08 | 2018-04-08 | Rigidity damping adjustable boundary system suitable for multipoint earthquake motion test of vibrating table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810305001.5A CN108425983B (en) | 2018-04-08 | 2018-04-08 | Rigidity damping adjustable boundary system suitable for multipoint earthquake motion test of vibrating table |
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| CN108425983A CN108425983A (en) | 2018-08-21 |
| CN108425983B true CN108425983B (en) | 2024-03-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109856960B (en) * | 2019-03-08 | 2020-10-02 | 大连海事大学 | Rigidity control method of two-degree-of-freedom dual-electro-hydraulic vibration table array simulation system |
| CN111693235A (en) * | 2019-03-11 | 2020-09-22 | 中国水利水电科学研究院 | Low-frequency amplifying device of electromagnetic vibration table |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047790U (en) * | 1989-03-12 | 1989-11-15 | 西安石油学院 | Suspended eddy-current-type geophone |
| CN101319967A (en) * | 2007-06-04 | 2008-12-10 | 北京航空航天大学 | Intelligent experimental bench for driver performance test |
| CN101556333A (en) * | 2009-02-24 | 2009-10-14 | 吉林建筑工程学院 | Comprehensive system of horizontal two-way earthquake simulation shaking table |
| CN103238087A (en) * | 2010-10-14 | 2013-08-07 | 英洛瓦有限公司 | Seismic data filtering based on vibrator-coupled ground model |
| JP2013215853A (en) * | 2012-04-10 | 2013-10-24 | Sophia School Corp | Method for improving dynamic rigidity and damping capacity while maintaining and improving static rigidity of coupled structure |
| CN104315073A (en) * | 2014-08-25 | 2015-01-28 | 合肥工业大学 | Variable-stiffness variable-damping shock absorber based on magnetorheological damper |
| CN104455189A (en) * | 2014-10-30 | 2015-03-25 | 东南大学 | Three-dimensional isolation support |
| CN206161873U (en) * | 2016-11-04 | 2017-05-10 | 河北赛赛尔俊峰物探装备有限公司 | High temperature geophone |
| CN106763442A (en) * | 2016-11-08 | 2017-05-31 | 安徽理工大学 | The self-supplied magnetic current liquid damp type shock absorber of miniature precision instrument |
| CN106763445A (en) * | 2017-01-06 | 2017-05-31 | 天津大学 | A kind of mutative damp variable rigidity control method of intellectual material shock absorber |
| CN207976264U (en) * | 2018-04-08 | 2018-10-16 | 天津大学 | A kind of multidirectional adjustable rigidity spring suitable for multiple spot shaketalle test simulating boundary |
-
2018
- 2018-04-08 CN CN201810305001.5A patent/CN108425983B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047790U (en) * | 1989-03-12 | 1989-11-15 | 西安石油学院 | Suspended eddy-current-type geophone |
| CN101319967A (en) * | 2007-06-04 | 2008-12-10 | 北京航空航天大学 | Intelligent experimental bench for driver performance test |
| CN101556333A (en) * | 2009-02-24 | 2009-10-14 | 吉林建筑工程学院 | Comprehensive system of horizontal two-way earthquake simulation shaking table |
| CN103238087A (en) * | 2010-10-14 | 2013-08-07 | 英洛瓦有限公司 | Seismic data filtering based on vibrator-coupled ground model |
| JP2013215853A (en) * | 2012-04-10 | 2013-10-24 | Sophia School Corp | Method for improving dynamic rigidity and damping capacity while maintaining and improving static rigidity of coupled structure |
| CN104315073A (en) * | 2014-08-25 | 2015-01-28 | 合肥工业大学 | Variable-stiffness variable-damping shock absorber based on magnetorheological damper |
| CN104455189A (en) * | 2014-10-30 | 2015-03-25 | 东南大学 | Three-dimensional isolation support |
| CN206161873U (en) * | 2016-11-04 | 2017-05-10 | 河北赛赛尔俊峰物探装备有限公司 | High temperature geophone |
| CN106763442A (en) * | 2016-11-08 | 2017-05-31 | 安徽理工大学 | The self-supplied magnetic current liquid damp type shock absorber of miniature precision instrument |
| CN106763445A (en) * | 2017-01-06 | 2017-05-31 | 天津大学 | A kind of mutative damp variable rigidity control method of intellectual material shock absorber |
| CN207976264U (en) * | 2018-04-08 | 2018-10-16 | 天津大学 | A kind of multidirectional adjustable rigidity spring suitable for multiple spot shaketalle test simulating boundary |
Non-Patent Citations (1)
| Title |
|---|
| 自复位变阻尼耗能支撑的力学原理与性能研究;徐龙河;谢行思;李忠献;;工程力学;20180125(第01期);第208-215页 * |
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