CN112832398A - Box type tuning particle mass damping device combined with collision damping - Google Patents
Box type tuning particle mass damping device combined with collision damping Download PDFInfo
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- CN112832398A CN112832398A CN202011642535.0A CN202011642535A CN112832398A CN 112832398 A CN112832398 A CN 112832398A CN 202011642535 A CN202011642535 A CN 202011642535A CN 112832398 A CN112832398 A CN 112832398A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
Abstract
The invention discloses a box type tuning particle mass damping device combined with collision damping, and relates to the technical field of damping vibration attenuation. The box type tuning particle mass damping device comprises a mass block component, a spring and a damping box which are arranged in a shell; the mass block assembly at least comprises a particle mass block; the shock absorber further comprises a shock damping support, the shock damping support is installed on the vibration stroke of the mass block assembly and can horizontally limit the vibration of the mass block assembly, the shock damping support comprises a support and a viscoelastic material layer, and the viscoelastic material layer is installed on the inner side of the support and vertically arranged in the shell to receive the shock of the mass block assembly. The invention utilizes the advantages of the particle damper and the tuned mass damper, and takes the damping box and the collision damping bracket as a damping system, the damping box has small initial starting force, the hybrid energy consumption mechanism enhances the vibration and energy consumption effect, and has wide vibration damping frequency band, compact structure and high space utilization rate.
Description
Technical Field
The invention relates to the technical field of damping vibration attenuation, in particular to a box type tuning particle mass damping device combining collision damping.
Background
For the communication tower structure, in order to adapt to more and more equipment types and quantities, the conventional solution of wind load is to increase the number of tower mast structures or increase the appearance of a single tower main body structure and the steel consumption on one hand, and to set various structural vibration reduction measures on the other hand.
The structural vibration damping control measures are different according to control modes and can be divided into active control, semi-active control, passive control and hybrid control. The optimal control force needs to be calculated through monitoring parameters of a sensor in the active control mode, and is directly output to a controlled structure through an actuator, but the active control method is complex in technology, high in manufacturing cost and high in maintenance requirement. The semi-active control eliminates an actuator which needs external high-power supply, and only needs a controller with small current to adjust damping or rigidity parameters within a small range according to sensor parameter feedback, so that the damper parameters are in an optimal state, but the damper parameters still need complicated control algorithm calculation. Hybrid control is a new control technology developed in recent years and combining active control with passive control, and can exert respective advantages of passive control and active control, but the combination mode of cooperation and auxiliary control of the two is not mature. The passive control is a structure vibration reduction technology which is developed more mature at present, and achieves the purpose of controlling the harmful vibration response of the engineering structure mainly through reasonable damper parameter design and installation position distribution.
In passive control, a Tuned Mass Damper (TMD) is a common damping device, and is formed by adding an inertial Mass to a top or upper portion of a tower, and connecting the Mass to a main structure (tower) with a spring and a Damper. The vibration frequency of the tuned mass damper is close to the frequency of the main structure, the control strategy is to apply the vibration mode resonance of the sub-structure and the main structure to achieve the purpose of dynamic vibration absorption, and the application of the damping structure continuously consumes the energy of the main structure and the sub-structure to reduce the dynamic response of the main structure. TMD is generally divided into three major parts, a stiffness system, a mass system and a damping system, from the component composition, and these parts can form different types of damping devices by different combinations: the rigidity system has more types, the mass system can be divided into a solid type and a liquid type, and the damping system can be divided into a rod type damper, a damping box and an eddy current damper. However, the damping frequency band of existing TMDs is narrow, the energy dissipation capability is limited, and it often requires a large space to match the motion of the mass system.
The particle damper technology is a novel damper applied to the field of civil engineering vibration control in recent years, and has the advantages of small change to an original system, small additional mass, wide vibration damping frequency band, good multi-dimensional control capability and the like as a tuned mass and energy consumption vibration damping control technology. However, in the particle damper, the collisions between particles and cavities after the damping particles start to vibrate are mostly elastic collisions, and the energy dissipation capability of the collision structure is limited.
Therefore, it is desirable to provide a novel tuned particle damper which can overcome the defects of too narrow damping frequency band of TMD, unstable effect of the particle damper, strong energy consumption capability and high space utilization rate.
Disclosure of Invention
The invention aims to: overcomes the defects of the prior art and provides a box type tuning particle mass damping device combined with collision damping. The invention utilizes the advantages of the particle damper and the tuned mass damper, and takes the damping box and the collision damping bracket as a damping system, the damping box has small initial starting force, the hybrid energy consumption mechanism enhances the damping and energy consumption effect, increases the damping frequency band, and has more compact structure and high space utilization rate.
In order to achieve the above object, the present invention provides the following technical solutions:
a box type tuning particle mass damping device combined with collision damping comprises a shell, a mass block assembly, a spring and a damping box, wherein the mass block assembly, the spring and the damping box are arranged in the shell;
the mass block at least comprises a particle mass block, the particle mass block comprises a cavity formed by a shell, particle groups are filled in the cavity, and vibration energy is consumed through friction and/or collision between the particle groups and the shell; the mass block assembly is arranged in the shell as a lower support through the pulley, so that the mass block assembly can vibrate in any direction in a plane; the spring is horizontally arranged between the mass block assembly and the shell and used for providing horizontal rigidity; one end of the damping box is connected to the shell, the other end of the damping box is connected to the mass block assembly, and the damping box generates damping force when the mass block assembly vibrates;
and install and to carry out the horizontal spacing collision damping support to the vibration of mass block subassembly on the vibration stroke of mass block subassembly, collision damping support includes support and viscoelastic material layer, the viscoelastic material layer is installed at the support inboard and vertical setting in the shell in order to receive the collision of mass block subassembly.
Further, the mass block assembly also comprises a fixed mass block, the particle mass block is fixedly arranged at the upper part and/or the lower part of the fixed mass block, and the weight ratio of the weight of the particle mass block to the total weight of the mass block assembly is 5-90%.
Further, the damping box comprises a box body filled with the viscous body and an upper component inserted into the viscous body, the lower part of the box body is arranged on the mass block assembly, the lower end of the upper component is inserted into the viscous body, the upper end of the upper component is connected with the shell, and the upper component moves in the viscous body in the box body to generate damping force when vibrating.
Further, the upper member is a vertical rod, and one or more vertical rods inserted into the viscous body; when a plurality of vertical rods are adopted, a plurality of grids are arranged in the box body corresponding to the vertical rods, and each vertical rod is inserted into the grid filled with the viscous body.
Further, the weight ratio of the weight of the particle mass to the total weight of the mass block assembly is 20% -30%, and the installation position of the collision damping support is located at 1/4-1/2 of the vibration stroke of the mass block assembly.
Further, the horizontal distance between the collision damping support and the mass block assembly is 20-100mm, and the thickness of the viscoelastic material layer is 3-10 mm.
Further, a partition plate is arranged in a cavity formed by the shell of the particle mass block to divide the cavity into a plurality of sub-cavities, particle groups are filled in the sub-cavities, and vibration energy is consumed through friction and/or collision between the particle groups and the partition plate.
Further, the particle group consists of a plurality of spheres with different diameters of 1-60 mm; the ball body is formed by mixing one or more of a steel ball body, a lead ball body, an aluminum ball body, a ceramic ball body, a glass ball body, a plastic ball body and an alloy ball body.
Further, a plurality of springs are arranged on the same horizontal plane, and the springs are arranged around the mass block in a symmetrical or asymmetrical mode.
Furthermore, the fixed mass block is formed by mixing one or more of steel, lead block, concrete, grouting material and liquid.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects as examples:
1) the advantages of the particle damper and the tuned mass damper are mixed, particle groups in the particle mass block are rubbed and collided with the inside of the shell, the partition plates and the particle groups, vibration energy is consumed greatly, and structural response caused by external excitation can be effectively reduced. Meanwhile, the collision damping support is used as a part of a damping system to form collision damping, and the viscoelastic material on the collision prevention support consumes energy through collision with the mass block assembly as a whole, so that structural response is reduced. The hybrid energy consumption mechanism strengthens the damping and energy consumption effect and increases the damping frequency band.
2) The arrangement of the collision damping support enables the structure of the whole damping device to be more compact, and the space utilization rate is remarkably improved.
3) The stiffness and frequency of the whole damping device can be adjusted by adjusting the size of the mass or replacing the spring.
4) The damping box can adopt open arrangement, has solved the difficult problem of dissipation of inside heat.
Drawings
Fig. 1 is a schematic structural diagram of a box-type tuned particle mass damping device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a box-type tuned particle mass damping device according to an embodiment of the present invention.
Fig. 3 is a schematic view of the installation of the damping device provided by the embodiment of the invention on a building.
Fig. 4 is a schematic structural diagram of a mass block assembly according to an embodiment of the present invention.
Fig. 5 is a schematic view of an installation position of the impact damping bracket according to the embodiment of the present invention.
Fig. 6 is a schematic structural view of a crash damping support according to an embodiment of the present invention.
Fig. 7 is a plan view of a crash damping brace and spring provided in accordance with an embodiment of the present invention.
Fig. 8 is a first schematic view illustrating an installation position of a spring according to an embodiment of the present invention.
Fig. 9 is a second schematic view of an installation position of a spring according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a damping box according to an embodiment of the present invention.
Fig. 11 is a schematic perspective view of a damper box with multiple vertical rods according to an embodiment of the present invention.
Description of reference numerals:
a damping device 100;
a housing 110;
a mass assembly 120, a particle mass 121, a shell 121a, a cavity 121b, a particle group 121c, a partition plate 121d, and a fixed mass 122;
a pulley 130;
a spring 140;
a mounting bracket 170;
a communication tower 200;
the platform 210 is installed.
Detailed Description
The box type tuned particle mass damping device combined with impact damping disclosed by the invention is further explained in detail with reference to the drawings and the specific embodiment. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments. Thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
It should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes and other dimensions, should be construed as falling within the scope of the invention unless the function and objectives of the invention are affected. The scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that described or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Examples
Referring to fig. 1, a box-type tuned particle mass damping device incorporating impact damping is provided.
The box tuned particle mass damping device 100 includes a housing 110, and a mass assembly 120, a spring 140, and a damping box 150 disposed in the housing 110.
The mass assembly 120 includes at least a particle mass including a cavity formed by a shell, the cavity filled with a population of particles that dissipates vibrational energy through friction and/or collisions between the population of particles themselves and between the population of particles and the shell.
The mass assembly 120 is mounted in the housing 110 as a lower support through pulleys 130 so that the mass assembly 120 can vibrate in any direction in a plane.
The spring 130 is horizontally disposed between the mass assembly 120 and the housing 110 for providing horizontal stiffness.
The damping case 150 has one end connected to the housing 110 and the other end connected to the mass assembly 120, and the damping case 150 generates a damping force when the mass assembly 120 vibrates.
A crash damping mount 160 is also provided between the mass assembly 120 and the housing 110.
The impact damping support 160 is installed on a vibration stroke of the mass assembly 120 and can horizontally limit vibration of the mass assembly 120. In this embodiment, the impact damping bracket 160 may be directly mounted on the housing 110, for example, the bottom of the impact damping bracket 160 is fixedly mounted on the bottom plate of the housing 110 in fig. 1; the mounting may also be performed by a separate mounting bracket 170, such as the impact damping bracket 160 fixedly mounted to the side wall of the outer shell 110 by a lateral mounting bracket 170 in fig. 2.
In use, the damping device 100 is installed on a building structure, and the housing 110 serves as a peripheral skeleton and a protective structure of the entire damping device 100. When the mass block assembly 120 vibrates, the particle groups in the particle mass block 121 rub and collide with the inside of the shell, the partition plates and the particle groups, so that a large amount of vibration energy can be consumed; meanwhile, the energy consumed by the collision between the viscoelastic material layer on the anti-collision support 160 and the mass block assembly is reduced, the structural response is reduced, and the anti-collision support 160 can remarkably reduce the vibration time and the vibration stroke of the damping device and dissipate the motion energy. Compared with a rod-type damper, the damping box is arranged openly, so that the problems of easy leakage, difficult dissipation of internal heat and difficult guarantee of long-term performance are solved,
referring to fig. 3, taking the communication tower 200 as an example, by adding one or more damping devices as described above to the communication tower 200, when the main structure of the communication tower 200 is subjected to an external dynamic force (e.g., wind load), the damping devices provide a force with a frequency close to or equal to the frequency and opposite to the moving direction of the structure, so as to partially or completely cancel the structural response caused by the external excitation. Preferably, the plurality of damping devices are mounted on the tower 200 in a centrally symmetric fashion via the mounting platform 210.
In this embodiment, the mass assembly 120 may further include a fixed mass 122, and the particle mass 121 is fixedly mounted on the upper portion and/or the lower portion of the fixed mass 122. The stiffness and frequency of the damping device can be adjusted by adjusting the weight and weight ratio of the particle mass 121 and the fixed mass 122.
Referring to fig. 4, the particle mass block 121 includes a cavity 121b formed by a housing 121a, a particle group 121c is filled in the cavity 121b, and vibration energy is consumed by friction and/or collision between the particle group 121c itself and between the particle group 121c and the housing 121 a.
Preferably, in this embodiment, one or more partition plates 121d are disposed in the cavity, and the partition plates 121d may partition the cavity 121b into a plurality of sub-cavities, each of which may be filled with the particle group 121c, and the vibration energy is consumed by friction and/or collision between the particle group 121c itself and between the particle group 121c and the housing 121a and the partition plates 121 d. The volume of the population of particles may be 20% to 80%, preferably 20% to 40%, of the volume of the chamber of each subchamber.
The cavity may be a rectangular parallelepiped, or may be in other shapes such as a cylinder, a prism, a curved surface, etc., and the shape of the cavity should not be construed as limiting the present invention.
The population of particles preferably consists of a plurality of spheres of unequal diameter of 1-60 mm. On one hand, collision, friction and momentum exchange among the spheres and plastic deformation of the tiny particles during mutual collision can consume the energy of a vibration system, so that the effect of vibration reduction is realized; on the other hand, the collision, friction of the interaction between the sphere and the vessel wall, including the shell and the baffle, can also dissipate the energy of the vibration system.
The ball body can be formed by mixing one or more of a steel ball body, a lead ball body, an aluminum ball body, a ceramic ball body, a glass ball body, a plastic ball body and an alloy ball body. Preferably, in this embodiment, the ball is a steel ball. Of course, those skilled in the art will recognize spheres as the preferred vibration damping particles, and other shapes of vibration damping particles may be used in the above-described particle damper, which should not be construed as limiting the invention.
The weight ratio of the weight of the particulate mass 121 to the total weight of the mass components ranges from 5% to 90%. The crash damping bracket 160 may be disposed at any position on the vibration stroke (or sliding stroke) of the mass block assembly.
Preferably, the weight ratio of the weight of the particle mass block 121 to the total weight of the mass block assembly is 20% to 30%, the installation position of the collision damping support 160 is located at 1/4 to 1/2 of the vibration stroke of the mass block assembly 120, and within the above weight ratio and installation position range, the damping frequency bandwidth and energy consumption effect of the damping device 100 are superior, and the space utilization rate is ensured.
Described in connection with fig. 5: if the vibration stroke of the mass block assembly 120 is made L, the impact damping bracket 160 is installed at a position 1/4-1/2 of the vibration stroke of the mass block assembly 120, i.e., D1/4L-1/2L.
Further, the horizontal distance d between the collision damping support 160 and the mass assembly 120 is 20-100 mm.
Referring to fig. 6, in the embodiment, in consideration of energy consumption effect caused by collision and manufacturing cost, it is preferable that the thickness t of the viscoelastic material layer 162 ranges from 3 mm to 10 mm. The viscoelastic material layer 162 is mounted by a bracket 161, and the bracket 161 is preferably made of a rigid material, which can provide rigid support when receiving an impact.
Referring to fig. 7, in the present embodiment, a plurality of springs 140 as the stiffness system may be arranged on the same horizontal plane, and a plurality of springs 140 may be installed around the mass assembly 120 in a symmetrical or asymmetrical manner, preferably, in a symmetrical manner. A plurality of springs 140 and collision damping brackets 160 are located between the housing 110 and the mass assembly 120, and in fig. 7, the collision damping brackets 160 may be provided in a ring shape corresponding to the shapes of the housing and the mass.
It should be noted that although the mounting heights of the springs illustrated in fig. 1 to 2 are all located above the crash damping support, those skilled in the art should understand that the mounting heights of the springs may also be located below the crash damping support, as shown in fig. 8; or in a preferred embodiment, the spring may be installed after passing through the through hole 163 of the impact damping bracket 160, as shown in fig. 9.
In this embodiment, the damping box 150 is preferably installed at an upper portion of the mass assembly 120. A typical damper box structure is shown in fig. 10: the damping box 150 includes a box body 151, and a lower portion of the box body 151 is mounted on the mass block assembly. By way of example and not limitation, the bottom of the housing 151 may be mounted to the mass block assemblies by fasteners such as bolts, clips, and/or adhesives. Tank 151 defines a receiving cavity 152 for holding a viscous body 154, which viscous body 154 is of a fluid or semi-fluid construction. In correspondence with the housing chamber 152, an upper member 153 inserted in the viscous body 154 is provided. The lower end of the upper member 153 is inserted into the viscous body 154, and the upper end of the upper member 153 is coupled to the housing 110. When vibrating, the upper member 153 moves in the viscous body 154 in the case 151 to generate a damping force, thereby absorbing vibration energy and reducing a vibration reaction.
Preferably, the upper member is a vertical rod, and the vertical rods inserted into the viscous body can be arranged into one or more than one vertical rods according to requirements. In specific implementation, the vertical rod can be made of metal materials, wood materials or composite materials; the total length of the pole, the ratio of the inserted length (the ratio of the length in the viscous body 154 to the total length), and the cross-sectional form can be flexibly arranged as required to adjust the damping force.
The top of the box body can be provided with a top cover and can also be collected to be arranged in an open mode. Preferably, the top of the box body is arranged in an open mode, so that the problem that internal heat is not easy to dissipate can be solved. Of course, in view of the problem of loss of the viscous body 154 due to the open arrangement, a level alarm may be provided to monitor the amount of the viscous body 154, and when the amount of the viscous body 154 is lower than a preset scale line, a warning message may be issued by the hydraulic alarm to remind maintenance personnel to perform inspection and viscous body replenishment.
For a multiple-pole damping box structure, it is preferable to provide separate cells in the box 151 for each pole, with each pole inserted into a cell containing viscous mass 154.
Referring to fig. 11, the receiving chamber 152 formed by the case 151 is divided into 3 cells 156 by a partition plate 155, each cell 156 is provided with a vertical rod therein, the upper end of the solid is fixed by the housing 110, and the lower end of the vertical rod is inserted into the viscous body 154. Under the action of earthquake or wind load, the box body swings along with the mass block, and the vertical rod moves in the viscous body 154 to generate damping force, so that the vibration resistance and energy consumption functions are provided for the structure.
The number of the cells 156 in the box 151 may also be adjusted as required to adjust the damping force, so as to achieve the damping force adjustable function of the viscous damping box. Meanwhile, the motion of the multiple vertical rods in any direction in the viscous body can generate damping force, and the multidirectional viscous energy dissipation effect of the structure can be realized.
The fixed mass 122 may be made of one or more of steel, lead, concrete, grouting material, and liquid.
In the foregoing description, the disclosure of the present invention is not intended to limit itself to these aspects. Rather, the various components may be selectively and operatively combined in any number within the intended scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be interpreted as inclusive or open-ended, rather than exclusive or closed-ended, by default, unless explicitly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. Common terms found in dictionaries should not be interpreted too ideally or too realistically in the context of related art documents unless the present disclosure expressly limits them to that. Any changes and modifications of the present invention based on the above disclosure will be within the scope of the appended claims.
Claims (10)
1. The utility model provides a combine impact damping's box harmonious granule mass damping device, includes the shell to and the mass block subassembly, spring and the damping box of setting in the shell, its characterized in that:
the mass block at least comprises a particle mass block, the particle mass block comprises a cavity formed by a shell, particle groups are filled in the cavity, and vibration energy is consumed through friction and/or collision between the particle groups and the shell; the mass block assembly is arranged in the shell as a lower support through the pulley, so that the mass block assembly can vibrate in any direction in a plane; the spring is horizontally arranged between the mass block assembly and the shell and used for providing horizontal rigidity; one end of the damping box is connected to the shell, the other end of the damping box is connected to the mass block assembly, and the damping box generates damping force when the mass block assembly vibrates;
and install and to carry out the horizontal spacing collision damping support to the vibration of mass block subassembly on the vibration stroke of mass block subassembly, collision damping support includes support and viscoelastic material layer, the viscoelastic material layer is installed at the support inboard and vertical setting in the shell in order to receive the collision of mass block subassembly.
2. The box-type tuned particle mass damping device according to claim 1, wherein: the mass block assembly further comprises a fixed mass block, the particle mass block is fixedly arranged at the upper part and/or the lower part of the fixed mass block, and the weight ratio of the weight of the particle mass block to the total weight of the mass block assembly is 5% -90%.
3. The box-type tuned particle mass damping device according to claim 2, wherein: the damping box comprises a box body filled with a viscous body and an upper component inserted into the viscous body, wherein the lower part of the box body is arranged on the mass block assembly, the lower end of the upper component is inserted into the viscous body, the upper end of the upper component is connected with the shell, and the upper component moves in the viscous body in the box body to generate damping force when vibrating.
4. The box-type tuned particle mass damping device according to claim 3, wherein: the upper component is a vertical rod, and one or more vertical rods inserted into the viscous body; when a plurality of vertical rods are adopted, a plurality of grids are arranged in the box body corresponding to the vertical rods, and each vertical rod is inserted into the grid filled with the viscous body.
5. The box-type tuned particle mass damping device according to claim 2, wherein: the weight ratio of the weight of the particle mass block to the total weight of the mass block assembly is 20-30%, and the installation position of the collision damping support is located at 1/4-1/2 of the vibration stroke of the mass block assembly.
6. The box-type tuned particle mass damping device according to claim 5, wherein: the horizontal distance between the collision damping support and the mass block assembly is 20-100mm, and the thickness of the viscoelastic material layer is 3-10 mm.
7. The box-type tuned particle mass damping device according to claim 1 or 2, wherein: the cavity that the casing of granule quality piece formed is provided with the baffle in order to separate into a plurality of subchambers with the cavity, and the subchamber is filled with the granule crowd, through the friction and/or collision consumption vibration energy between granule crowd and the baffle.
8. The box-type tuned particle mass damping device according to claim 7, wherein: the particle group consists of a plurality of spheres with different diameters of 1-60 mm; the ball body is formed by mixing one or more of a steel ball body, a lead ball body, an aluminum ball body, a ceramic ball body, a glass ball body, a plastic ball body and an alloy ball body.
9. The box-type tuned particle mass damping device according to claim 1, wherein: the springs are arranged on the same horizontal plane, and the springs are arranged around the mass block in a symmetrical or asymmetrical mode.
10. The box-type tuned particle mass damping device according to claim 1, wherein: the fixed mass block is formed by mixing one or more of steel, lead block, concrete, grouting material and liquid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011642535.0A CN112832398A (en) | 2020-12-31 | 2020-12-31 | Box type tuning particle mass damping device combined with collision damping |
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|---|---|---|---|
| CN202011642535.0A CN112832398A (en) | 2020-12-31 | 2020-12-31 | Box type tuning particle mass damping device combined with collision damping |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844124A (en) * | 2021-09-16 | 2021-12-28 | 深圳市航天新材科技有限公司 | Multi-level composite protection structure and preparation method thereof |
| CN114635937A (en) * | 2022-03-28 | 2022-06-17 | 同济大学 | Particle inertial volume system based on sub-fluid contact stress network |
-
2020
- 2020-12-31 CN CN202011642535.0A patent/CN112832398A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844124A (en) * | 2021-09-16 | 2021-12-28 | 深圳市航天新材科技有限公司 | Multi-level composite protection structure and preparation method thereof |
| CN113844124B (en) * | 2021-09-16 | 2023-09-05 | 深圳市航天新材科技有限公司 | Multi-layer composite protective structure and preparation method thereof |
| CN114635937A (en) * | 2022-03-28 | 2022-06-17 | 同济大学 | Particle inertial volume system based on sub-fluid contact stress network |
| CN114635937B (en) * | 2022-03-28 | 2024-04-23 | 同济大学 | Particle inertial-to-volume system based on sub-fluid contact stress network |
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