CN115419186B - Self-resetting collision vibration double-tuning vibration reduction system - Google Patents
Self-resetting collision vibration double-tuning vibration reduction system Download PDFInfo
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- CN115419186B CN115419186B CN202211216464.7A CN202211216464A CN115419186B CN 115419186 B CN115419186 B CN 115419186B CN 202211216464 A CN202211216464 A CN 202211216464A CN 115419186 B CN115419186 B CN 115419186B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention provides a self-resetting collision vibration double-tuning vibration reduction system, which relates to the technical field of civil engineering vibration control and comprises a bottom plate, wherein the bottom plate is arranged on a main body structure, two parallel friction guide rails are arranged on the surface of the bottom plate, two groups of mass block units are respectively arranged on the friction guide rails, supporting pieces are arranged on opposite sides of the two friction guide rails, each mass block unit comprises a mass block and a collision plate, the mass block units and the collision plate are respectively and slidably arranged on the two friction guide rails, the two mass blocks are arranged on different friction guide rails, the mass blocks are connected with the supporting pieces through shape memory alloy springs, the shape memory alloy springs are stretched under the action of external excitation, the collision plate and the mass block slide along the friction guide rails, and the collision plate and the mass block collide with each other to consume energy. According to the invention, through the combined action of the four vibration reduction mechanisms, the vibration reduction effect and toughness of the system are greatly enhanced, the phenomenon that the system cannot work normally due to single failure of the vibration reduction mechanism is avoided, and the system is restored to the initial position under the action of the shape memory alloy spring, so that the system is in an optimal working state.
Description
Technical Field
The invention relates to the technical field of civil engineering vibration control, in particular to a self-resetting collision vibration double-tuning vibration reduction system.
Background
The structural vibration problem is commonly existing in the aspects of life, is as small as structural vibration caused by speaking and walking of an occupant, is as large as structural vibration caused by external excitation such as earthquake, wind, explosion and the like, and the continuous structural vibration can cause serious damage to the psychological and mental states of the occupant and also greatly influence the safety and durability of the structure. Therefore, a great number of students start to research the related vibration damping mechanism for controlling structural vibration and the application of the vibration damping system, and the application of the tuned vibration damping system is one of main research directions, and at present, the application of the tuned vibration damping system has the following problems to be solved.
At present, the vibration damping mechanisms of a tuned vibration damping system are single, one or two vibration damping mechanisms exist in one tuned vibration damping system generally, for example, a single mass block is arranged for tuned vibration damping, a damping system is arranged for energy consumption vibration damping, the vibration damping mechanisms are single, and in some cases, one vibration damping mechanism possibly exits from working for some reasons and cannot play a preset role, so that the functions and effects of the vibration damping system are greatly reduced.
In addition, the tuned vibration damping system realizes the vibration damping effect of the main structure by adjusting the ratio of the rigidity of the connecting piece to the mass of the mass block, so that the frequency of the tuned mass damper is similar to the first-order frequency of the main structure, and the connecting piece for connecting the mass block and the supporting piece in the tuned vibration damping system usually adopts a common spring at present, but the common spring has less elongation and weaker restoring force when being subjected to smaller external excitation actions such as wind vibration, earthquake and the like; when the vibration damping system is subjected to larger external excitation actions such as typhoons, rare earthquakes and the like, the common springs are larger in elongation and easy to generate permanent deformation, so that the mass blocks in the vibration damping system are difficult to recover to the initial positions under the action of the common springs under the action of various external excitation actions, the vibration damping system is not in the designed optimal working state, and the vibration damping effect of the vibration damping system in subsequent vibration is affected.
In view of the above, the present invention provides a self-resettable bump double tuned vibration damping system to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a self-resetting collision vibration double-tuning vibration reduction system which has various vibration reduction energy consumption mechanisms, and adopts a shape memory alloy spring, so that the system can be restored to an initial position, and the vibration reduction effect and the system toughness of the vibration reduction system are greatly enhanced.
The invention provides a self-resetting collision vibration double-tuning vibration reduction system, which comprises: the base plate is arranged on a main body structure, two friction guide rails which are arranged in parallel are arranged on the surface of the base plate, two groups of mass block units with different masses are respectively and slidably arranged on the two friction guide rails, supporting pieces are respectively arranged at opposite ends of the two friction guide rails, each mass block unit comprises a mass block and a collision plate fixedly connected with the side face of each mass block unit, the mass block and the collision plate are respectively and slidably arranged with the two friction guide rails, the mass blocks in the two groups of mass block units are respectively arranged on different friction guide rails, the mass blocks and the supporting pieces opposite to the mass blocks are respectively connected through shape memory alloy springs, the shape memory alloy springs are stretched under the action of external excitation, and the collision plates can slide along the friction guide rails under the driving of the mass blocks and collide with the mass blocks arranged on the same friction guide rails.
Preferably, the stiffness of the two shape memory alloy springs is different.
Preferably, the friction guide rail is a T-shaped guide rail, and a friction material layer is arranged on the surface of the friction guide rail.
Preferably, the bottoms of the mass block and the collision plate are provided with T-shaped grooves which are installed in an adaptive manner with the friction guide rail.
Preferably, the collision plate and the side middle part of the mass block are vertically integrally connected.
Preferably, adjacent side surfaces of the mass block and the collision plate on each of the friction guide rails are provided with a buffer deformation layer.
Preferably, the material of the buffer deformation layer is a viscous material, an elastic material or a rigid material.
Preferably, triangular support plates are arranged on opposite sides of the buffer deformation layer, and the triangular support plates are vertically and fixedly connected with the side surfaces of the mass blocks and the surface of the collision plate.
Preferably, the mass block and the surface of the supporting piece are both provided with a spring fixing piece, the spring fixing piece comprises a mounting plate and two spring fixing rings arranged on the surface of the mounting plate, the mounting plate is fixedly mounted on the surface of the mass block or the supporting piece through bolts, and two ends of the shape memory alloy spring respectively penetrate through the spring fixing rings to be connected with the spring fixing piece.
Preferably, the support piece is L-shaped, a triangular rib plate which is vertically and fixedly connected with the support piece is arranged on the inner side of the bending part of the support piece, the support piece is fixedly connected with the bottom plate through bolts, and the spring fixing piece is fixedly arranged in the middle of the back side of the support piece through bolts.
Compared with the prior art; the technical scheme of the invention has the following beneficial effects:
1. according to the invention, the shape memory alloy spring is combined with the bump vibration double-tuned vibration reduction system, the characteristics of good shape memory effect of the shape memory alloy spring are utilized, and the limit and self-reset functions of the mass block unit in the tuned vibration reduction system are realized, so that the mass block unit can be restored to an initial design position after being subjected to external excitation, and the tuned vibration reduction system can be ensured to continuously resist various external excitation such as aftershock, wind vibration, impact and the like which possibly occur in a follow-up mode in a designed better working state;
2. the invention has four vibration reduction mechanisms working together:
tuning vibration damping. According to the actual engineering situation, the ratio of the stiffness of the two shape memory alloy springs to the mass of the two corresponding mass block units is adjusted, so that the frequency of the double-tuned vibration reduction system is similar to the first-order frequency of the main body structure, under the external excitation effect, the double-tuned vibration reduction system and the main body structure form a resonance effect, the energy input into the main body structure is transferred into the tuned vibration reduction system, the vibration reaction of the main body structure and the energy required to be consumed are reduced, and a tuned vibration reduction mechanism is realized;
and secondly, collision energy consumption vibration reduction. The side surfaces of the mass blocks and the collision plates in the mass block units, which face the collision plate and the mass block of the other mass block unit, are collision surfaces, under the action of external excitation, the two mass block units move, the displacement of the two mass block units is different due to the fact that the mass of the two mass block units is different, the distance between the two mass block units is gradually reduced, the mass block and the collision plate of the mass block unit collide with the collision plate and the mass block of the other mass block unit respectively, the collision surfaces can buffer and deform, good energy absorption effect can be provided, vibration energy is consumed, and a collision energy consumption mechanism is realized;
thirdly, self-resetting energy consumption vibration reduction. The shape memory alloy spring has good shape memory effect and good damping performance, the shape memory alloy spring is endowed with self-resetting capability, and the shape memory alloy spring is endowed with energy consumption capability, so that certain vibration energy can be consumed in the process of extension and self-resetting, and a self-resetting energy consumption mechanism is realized;
fourth, friction energy consumption vibration reduction. The friction guide rail surface is a rough friction surface, the mass block unit reciprocates on the friction guide rail under the external excitation effect, and the mass block and the two sides of the lower end of the collision plate are inwards protruded to be matched with the two sides of the lower end of the friction guide rail and inwards recessed parts, so that stable interaction force can be provided between the mass block unit and the friction guide rail, and vibration energy can be stably consumed through friction in the reciprocating motion process of the mass block unit, and a friction energy consumption mechanism is realized.
The combined action of the four vibration reduction mechanisms greatly enhances the vibration reduction effect and the system toughness of the vibration reduction system, and avoids the problem that the system cannot work normally due to the single vibration reduction mechanism and the failure of the single vibration reduction mechanism.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a vibration damping system of the present invention;
FIG. 2 is a schematic top view of the vibration damping system of the present invention;
FIG. 3 is a schematic view of the structure of the base plate of the present invention;
FIG. 4 is a schematic diagram of a mass unit according to the present invention;
FIG. 5 is a schematic diagram of a shape memory alloy spring according to the present invention;
FIG. 6 is a schematic view of a spring retainer according to the present invention;
FIG. 7 is a schematic view of the structure of the support member of the present invention;
reference numerals illustrate:
1: a bottom plate; 1-1: friction guide rail; 1-2: a friction material layer; 2: a mass block unit; 2-1: a mass block; 2-2: a collision plate; 2-3; a triangular support plate; 2-4: buffering the deformation layer; 3: a shape memory alloy spring; 4: a spring fixing member; 4-1: a spring fixing ring; 5: a support; 5-1: triangular rib plates.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the system or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The self-resetting collision vibration double-tuning vibration reduction system provided by the invention, as shown in fig. 1-4, comprises a bottom plate 1, wherein the bottom plate 1 can be installed on a main body structure, two friction guide rails 1-1 which are arranged in parallel are arranged on the surface of the bottom plate 1, two groups of mass block units 2 with different masses are respectively installed on the two friction guide rails 1-1 in a sliding manner, and supporting pieces 5 are respectively arranged at opposite ends of the two friction guide rails 1-1. The mass block unit 2 comprises mass blocks 2-1 and collision plates 2-2 fixedly connected with the middle parts of the side surfaces of the mass blocks 2-1, the collision plates 2-2 are vertically arranged, the mass blocks 2-1 and the collision plates 2-2 are respectively and slidably arranged with two friction guide rails 1-1, the mass blocks 2-1 in the two groups of mass block units 2 are respectively arranged on different friction guide rails 1-1, each mass block 2-1 and a supporting piece 5 opposite to the mass block 2-1 are respectively connected through a shape memory alloy spring 3, and the rigidity of the two shape memory alloy springs 3 is different. When the external excitation is performed, the collision plate 2-2 can slide along the friction guide rail 1-1 under the drive of the mass block 2-1, so that the shape memory alloy spring 3 stretches and collides with the mass block 2-1 arranged on the same friction guide rail 1-1 to consume energy.
In this embodiment, as shown in fig. 3, the friction guide rails 1-1 are T-shaped guide rails, two friction guide rails 1-1 are parallel to each other and disposed on the surface of the bottom plate 1, and are integrally connected with the bottom plate 1, and two sides of the lower half of the cross section of the friction guide rails are provided with recesses compared with the upper half of the cross section of the friction guide rails, so that the cross section of the friction guide rails is T-shaped, and the friction material layer 1-2 is laid on the upper surface of the friction guide rail 1-1. The opposite ends of the two friction guide rails 1-1 are respectively provided with a reserved space, and the bottom plate 1 is provided with a bolt hole for fixedly mounting the supporting piece 5.
Specifically, as shown in fig. 4, collision plates 2-2 in two groups of mass block units 2 with different masses are vertically and integrally connected with the middle parts of the side surfaces of the mass blocks 2-1, the collision plates 2-2 extend towards the direction vertical to the surface of the friction guide rail 1-1, T-shaped grooves which are installed in an adaptive manner with the friction guide rail 1-1 are formed in the bottoms of the mass blocks 2-1 and the collision plates 2-2, and the shape and the size of the T-shaped grooves are matched with those of the friction guide rail 1-1. The two are matched, so that the stability of the mass block unit 2 in the reciprocating motion process is ensured, the interaction between the friction guide rail 1-1 and the mass block unit 2 is enhanced, the friction energy consumption effect is improved, the T-shaped groove of the mass block unit 2 is aligned with the friction guide rail 1-1 and inserted, and the assembly of the bottom plate 1 and the mass block unit 2 is completed. The adjacent side surfaces of the mass block 2-1 and the collision plate 2-2 on each friction guide rail 1-1 are collision surfaces, and the collision surfaces are covered with buffer deformation layers 2-4. The material of the buffer deformation layer 2-4 is viscous material, elastic material or rigid material. The opposite sides of the buffer deformation layer 2-4 are provided with triangular support plates 2-3, and the triangular support plates 2-3 are vertically and fixedly connected with the side surfaces of the mass blocks 2-1 and the surfaces of the collision plates 2-2. The triangular support plate 2-3 not only enhances the connection strength of the mass block 2-1 and the collision plate 2-2, but also enhances the stability of the collision plate 2-2 when being impacted greatly. Two bolt holes are reserved on the opposite sides of the collision surface in the mass block 2-1 for mounting the spring fixing piece 4, and reliable connection of the mass block unit 2 and the shape memory alloy spring 3 can be realized through the spring fixing piece 4.
Specifically, as shown in fig. 5, the shape memory alloy spring 3 has good shape memory effect and damping performance, so that the shape memory alloy spring 3 can realize the effect of consuming vibration energy while realizing the self-resetting function.
As shown in fig. 1, 2 and 6, the surfaces of the mass block 2-1 and the supporting piece 5 are respectively provided with a spring fixing piece 4, the spring fixing piece 4 comprises a mounting plate and two spring fixing rings 4-1 arranged on the surfaces of the mounting plate, the mounting plate adopts a rectangular steel plate which is fixedly installed through matching of bolts and bolt holes formed on the surfaces of the mass block 2-1 or the supporting piece 5, the two spring fixing rings 4-1 are symmetrically arranged on the surface of the mounting plate, the distance between the two spring fixing rings is similar to the diameter of the shape memory alloy spring 3, and the shape memory alloy spring 3 passes through the two spring fixing rings 4-1, so that reliable connection between the shape memory alloy spring 3 and the spring fixing piece 4 is realized. Two bolt holes are reserved on the spring fixing element 4 outside the spring fixing ring 4-1, through which the spring fixing element 4 can be connected to the mass unit 2 or the support element 5 by means of bolts, whereby a reliable connection of the two ends of the shape memory alloy spring 3 to the mass unit 2 and the support element 5, respectively, is achieved.
As shown in fig. 7, the support 5 is L-shaped, two symmetrical bolt holes are reserved at the bottom steel plate and the vertical steel plate of the support 5, the bolt holes on the bottom steel plate are fixedly connected with the bottom plate 1, the bolt holes at the vertical steel plate are used for fixedly mounting the spring fixing piece 4, and the spring fixing piece 4 is fixedly mounted at the middle part of the back side of the support 5 through bolts. The inside of the bending part of the supporting piece 5 is provided with a triangular rib plate 5-1 which is vertically and fixedly connected with the supporting piece, the rigidity of the supporting piece 5 can be improved through the triangular rib plate 5-1, and the out-of-plane stability of the supporting piece 5 can be improved.
The double-tuned vibration reduction system tunes the first-order vibration of the main body structure through the two mass block units 2 with different masses, so that the vibration energy of the main body structure is transmitted to the mass block units 2 and is dissipated through system damping, and the two mass block units can consume energy through collision through the collision plate due to different masses of the two mass block units 2, and the self-reset function of the mass block units under various external excitation actions is realized by combining the self-reset capability of the shape memory alloy spring 3, and the specific working principle is as follows:
in the initial state, the shape memory alloy spring 3 is in a natural extension state, the mass block unit 2 is static on the friction guide rail 1-1, after being excited by the outside, the mass block unit 2 firstly plays a role of tuning vibration reduction, the first-order vibration of the main body structure is controlled, the mass block unit 2 moves along the friction guide rail 1-1, the shape memory alloy spring 3 extends, the displacement of the two mass block units 2 is reduced at different intervals due to different masses until the mass block 2-1 and the collision plate 2-2 on the mass block unit 2 collide with the collision plate 2-2 and the mass 2-1 on the other mass block unit 2 respectively, the buffer deformation layer 2-4 on the mass block unit 2 plays a role of buffering, a certain vibration energy is consumed at the same time, the two mass block units 2 rebound after collision, the shape memory alloy spring 3 retracts, so that the mass block unit 2 moves back and forth along the friction guide rail 1-1, the mass block unit 2 contacts with the friction material layer 1-2 on the friction guide rail 1-1, a certain vibration energy is consumed, the shape memory alloy spring 3 also has a certain vibration energy consumption along with the mass block unit 2, the shape memory alloy spring 2 has a back and forth effect, the vibration energy consumption is reduced by the vibration energy consumption of the shape memory alloy is reduced, and the vibration energy consumption is reduced from the shape memory alloy 2 is realized, and the vibration energy consumption is reduced, and the vibration energy is reduced. According to the invention, the vibration reduction effect is realized through four vibration reduction mechanisms, the vibration reduction effect and the system toughness of the vibration reduction system are greatly enhanced, and the mass block unit 2 is restored to the initial position under the action of the shape memory alloy spring 3, so that the system is always in the designed optimal working state, and various external excitations possibly occurring in the follow-up process can be continuously resisted.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A self-resettable bump double tuned vibration reduction system, comprising: the base plate (1), the base plate (1) is installed on the main body structure, two friction guide rails (1-1) which are arranged in parallel are arranged on the surface of the base plate (1), two groups of mass block units (2) with different masses are respectively installed on the two friction guide rails (1-1) in a sliding mode, supporting pieces (5) are respectively arranged at opposite ends of the two friction guide rails (1-1), the mass block units (2) comprise mass blocks (2-1) and collision plates (2-2) which are fixedly connected with the side surfaces of the mass blocks (2-1), the mass blocks (2-1) and the collision plates (2-2) are respectively installed with the two friction guide rails (1-1) in a sliding mode, the mass blocks (2-1) in the two groups of mass block units (2) are respectively installed on the different friction guide rails (1-1), the mass blocks (2-1) and the supporting pieces (5) which are opposite to the mass blocks are respectively connected with each other through shape memory alloy springs (3), under the shape memory alloy springs (3) are excited to drive the mass blocks (2-1) to slide along the friction guide rails (1-1), and collide with the mass block (2-1) mounted on the same friction guide rail (1-1).
2. Self-resettable bump double tuned vibration damping system according to claim 1, wherein the stiffness of the two shape memory alloy springs (3) is different.
3. The self-resettable bump double tuned vibration reduction system according to claim 1, wherein the friction rail (1-1) is a T-shaped rail, and a friction material layer is provided on the surface of the friction rail (1-1).
4. A self-resettable dual tuned vibration damping system according to claim 3, wherein the bottom of the mass (2-1) and the bottom of the collision plate (2-2) are provided with T-shaped grooves adapted to the friction guide rail (1-1).
5. A self-resettable shock double tuned vibration reduction system according to claim 3, wherein the collision plate (2-2) is integrally connected vertically to the side middle of the mass (2-1).
6. Self-resettable shock double tuned vibration damping system according to claim 1, wherein adjacent side surfaces of the mass (2-1) and the crash plate (2-2) on each of the friction tracks (1-1) are provided with a cushioning deformation layer (2-4).
7. The self-resettable shock dual resonance damping system according to claim 6, wherein the material of the cushioning deformation layer (2-4) is a viscous material, an elastic material or a rigid material.
8. The self-resettable dual tuned vibration damping system according to claim 6, wherein the opposite sides of the cushioning deformation layer (2-4) are provided with triangular support plates (2-3), the triangular support plates (2-3) being fixedly connected vertically to both the sides of the mass (2-1) and the surface of the collision plate (2-2).
9. The self-resettable vibration double tuned vibration reduction system according to claim 1, wherein the surface of the mass block (2-1) and the surface of the support member (5) are provided with spring fixing members (4), the spring fixing members (4) comprise a mounting plate and two spring fixing rings (4-1) arranged on the surface of the mounting plate, the mounting plate is fixedly mounted on the surface of the mass block (2-1) or the surface of the support member (5) through bolts, and two ends of the shape memory alloy spring (3) respectively penetrate through the spring fixing rings (4-1) and are connected with the spring fixing members (4).
10. The self-resetting collision vibration double-tuning vibration reduction system as claimed in claim 9, wherein the supporting piece (5) is in an L shape, a triangular rib plate (5-1) which is vertically and fixedly connected with the supporting piece is arranged on the inner side of the bending part of the supporting piece, the supporting piece (5) is fixedly connected with the bottom plate (1) through bolts, and the spring fixing piece (4) is fixedly arranged in the middle of the back side of the supporting piece (5) through bolts.
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| CN109138567A (en) * | 2018-10-10 | 2019-01-04 | 同济大学 | Double tunning type is used to appearance system |
| CN110422296A (en) * | 2019-07-02 | 2019-11-08 | 哈尔滨工程大学 | An a kind of heavy amount damper device of hull global vibration control |
| CN112854506A (en) * | 2020-12-31 | 2021-05-28 | 上海佑铁轨道科技有限公司 | Rod type tuned particle mass damping device combined with collision damping |
| CN112796432A (en) * | 2021-01-26 | 2021-05-14 | 广州大学 | Internal collision vibration type multi-mass damper |
| CN215562023U (en) * | 2021-07-28 | 2022-01-18 | 交通运输部公路科学研究所 | Steel longitudinal beam with vibration reduction function for reinforcing bridge deck system of large-span arch bridge |
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