94 results about "Damping capacity" patented technology

The invention discloses a system for enhancing the damping and aseismic capacities of an underground integrated pipe rack. It includes a pipe fixing assembly installed on the inner walls of the underground space on both sides. The assembly comprises multiple lifting frames arranged vertically and a lifting mechanism. The telescopic end of the lifting mechanism is fixedly connected to the lowermost lifting frame. One side of the lifting frame is slidingly connected to the inner wall of the underground space and features a recess for placing the pipe. A pipe holder inside the recess secures the pipe. During vibrations, the lifting frame slides on the inner wall, causing relative movement between adjacent pipe holders. The vibration is absorbed by the telescopic spring, preventing hard contact between the pipe and the vibration source. This reduces vibration and protects the pipe, thereby enhancing the aseismic capacity of the underground pipe rack.

The novel high-damping foil aerodynamic bearing with the negative Poisson's ratio effect is mainly characterized in that a 3-D double-V-shaped honeycomb supporting structure serves as a flexible supporting unit and is integrally formed through 3D printing, and damping material silica gel is poured into the bearing. In the operation process, a high-pressure gas film generated by a wedge-shaped space formed by matching of the rotor rotating at a high speed and the top foil can cause deformation of the 3-D double-V-shaped honeycomb supporting structure in the radial direction, and the negative Poisson's ratio effect is stimulated. At the moment, coulomb friction is generated between the supporting structure and the top foil and between the supporting structure and the bearing sleeve, meanwhile, shrinkage deformation of the supporting structure is limited by damping material silica gel poured in the supporting structure, and internal friction is generated in the damping material silica gel to consume energy. Therefore, coupling of the 3-D double-V-shaped honeycomb supporting structure and the damping material silica gel can provide proper rigidity and high damping capacity for the foil aerodynamic bearing.

The invention relates to the technical field of floating fans, in particular to a parameter tuning method suitable for a multi-tuned mass damper of a floating fan, which sequentially comprises the following steps of: establishing a system dynamics model; defining an optimization variable and a constraint range; constructing a comprehensive fitness function; initializing a grey wolf population and algorithm parameters; executing a grey wolf position optimization updating mechanism; setting convergence judgment conditions; and outputting the optimal TMD parameter combination. According to the method, structural dynamic characteristics and an intelligent algorithm strategy are fully fused, particularly, spatial arrangement coordinates of the TMD are brought into an optimization variable domain, collaborative design of tuning parameters and arrangement space is achieved, the method is different from a single-parameter or fixed-point optimization mode, the limitation of artificial experience layout is avoided, overall suppression of structural multi-order modal response is achieved, and the method is suitable for large-scale popularization and application. The damping capacity and the stability margin of the fan structure under wind wave flow coupling excitation are improved, cross-modal and multi-source vibration cooperative treatment is achieved on the system response coordination and control strategy level, and the method has the adaptability to offshore wind power scenes.

The invention discloses a storage type stock bin with an automatic feeding function, and relates to the technical field of stock bins. Comprising a negative pressure system, a control system and a rack, a material storage box is installed on the rack, a sleeve is arranged in the material storage box in a sleeved mode, two sets of sliding plates are oppositely installed in the sleeve in a sliding mode, conveying belts are installed on the two sets of sliding plates, a plurality of carrying plates are installed on the conveying belts, and material trays are placed on the carrying plates; the negative pressure system is connected with the conveying belt and the object carrying plate, a bearing plate is installed below the sleeve, two sets of material disc bases are installed below the material storage box, a feeding rail is installed between the two sets of material disc bases, a buffer plate is installed on the feeding rail, a damping spring is installed on the buffer plate, and by adjusting the effective number of turns of the damping spring, the number of the material disc bases can be adjusted. And the damping capacity of the tray can be adjusted by the damping spring so as to meet different use occasions.

The invention relates to a high-strength and high-damping shape memory elastomer and a preparation method thereof.The elastomer comprises a polyurethane matrix and polar micromolecules, the polyurethane matrix comprises polyol, diisocyanate and a boric acid cross-linking agent, the molar ratio of the polyol to the diisocyanate to the boric acid cross-linking agent is 1: (2-4): (0.5-3), and the polar micromolecules are connected with the polyol to the diisocyanate to the boric acid cross-linking agent. The mass ratio of the polyhydric alcohol to the polar small molecules is 1: (0.05-0.3). Compared with the prior art, the good mechanical property and room temperature damping capacity of the shape memory material are achieved at the same time.

In order to achieve all the purposes mentioned above and that will emerge from the detailed description below, the present invention is related to a vibration energy damping mechanism (10) having at least one fixing element (20) that can be connected with at least one first structural member (90) and at least one second structural member (100) in order to increase the resistance of structures against events that cause vibrations, such as earthquakes. Accordingly, its novelty is that it comprises at least one plate (30) configured between said at least two fixing elements (20), and in order to increase the load capacity and energy damping capacity of the structural system by increasing the displacements as a result of vibrations, it comprises at least two friction regions (I) having at least one disk (40) providing damping as a result of friction by being positioned between at least two elements that have the degree of freedom to move relative to each other during vibration.

This invention relates to the field of damping and vibration reduction technology, and discloses a bidirectional self-resetting TMD energy dissipation device, including a connecting plate, a load mechanism, and a damping energy dissipation component disposed between the load mechanism and the connecting plate. The damping energy dissipation component includes a hinge ball, with deflection rods rotatably connected to both sides of the hinge ball. The other ends of the two sets of deflection rods are rotatably connected to an L-shaped support plate fixed to the bottom of the connecting plate. This invention overcomes the problems of limited damping and vibration reduction energy dissipation direction and low damping efficiency in traditional dampers. By employing a multi-set distributed design, it can decompose the damping deflection, improve damping capacity and recovery capacity, enhance building stability and safety, facilitate installation and maintenance, achieve damping and energy dissipation in multiple directions, and facilitate counterweight addition and removal operations, making it suitable for different building vibration reduction needs.

The application belongs to the technical field of rail transit damping fasteners, and particularly relates to an air spring damping fastener, which comprises an upper iron pad, an air spring isolator, a lower iron pad, an anchoring system and a spring strip pressing system, wherein the air spring isolator is arranged between the upper iron pad and the lower iron pad and forms a sealed air cavity in the air spring isolator, the air spring isolator provides elastic support and damping effect for the steel rail through compression of the air cavity, the air cavity is communicated with the outside through a valve to realize air pressure adjustment, so as to change the elastic properties of the fastener, and the fastener has adaptive supporting and damping capacity under different load conditions. By introducing the air spring isolator as a core elastic element, the fastener can automatically match the reasonable rigidity under different load conditions, and the damping performance and structural safety are considered at the same time, so that the fastener has good damping effect, load adaptive capacity and engineering application value.

The invention belongs to the technical field of mechanical equipment damping, and particularly relates to a damping structure for mechanical equipment, which comprises a damping table, a bottom fixing type buffer mechanism and a surface adjusting type temperature conducting mechanism, the bottom fixing type buffer mechanism comprises a fixed connection assembly, an elastic supporting assembly, an energy absorption assembly and a guide assembly, the fixed connection assembly is arranged on the bottom wall of the damping table, and the elastic supporting assembly is arranged on the bottom wall of the damping table; the elastic supporting assembly is arranged at the bottom of the fixed connection assembly, the energy absorption assembly is arranged at the end, away from the damping table, of the elastic supporting assembly, and the guide assembly is arranged on the bottom wall of the elastic supporting assembly. According to the damping structure for the mechanical equipment, the damping capacity of the damping structure can be monitored in real time, the state of the rubber ring layer in the relatively low-temperature or high-temperature environment is adjusted, and then the damping performance of the damping structure is ensured.

The application provides a bearing assembly for chemical mechanical polishing, comprising a damping module, a driving module and a bearing head; wherein the damping module comprises a spindle with a cavity inside and a first damping unit in the cavity, the first damping unit comprises a core and a plurality of damping blocks arranged on the outer wall of the core, the damping blocks extrude the inner wall of the cavity to absorb the transverse vibration of the spindle. The core is placed in the spindle, which enhances the damping and anti-vibration effect, in addition, the plurality of damping blocks arranged on the outer wall of the core can absorb the transverse excitation generated from the polishing head grinding, the compression resistance of the damping blocks is fully utilized, the original shearing and tensile working state is changed to a compression working state, the transverse damping capacity is increased, and the reset and limiting effects are also exerted.

The invention discloses an air compressor shock absorption support which comprises a shock absorption support lower layer arranged at the bottom and used for providing overall supporting force for an air compressor and the support and a shock absorption support upper layer movably arranged above the shock absorption support lower layer, and the air compressor is fixed to the shock absorption support upper layer. The longitudinal damping mechanism and the transverse damping mechanism are arranged between the damping support lower layer and the damping support upper layer, and the transverse damping mechanism and the longitudinal damping mechanism can meet the damping requirements in different directions when the air compressor runs at the same time; by arranging the connecting rod assembly and the elastic assembly, vibration of the central area of the air compressor is transmitted to the transverse damping mechanism, longitudinal stress generated during vibration is counteracted, longitudinal damping is assisted, and the damping capacity of the support is improved.

The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The system does not include an external on / off switch or any remote on / off switching mechanism. The system also includes a disposable feature or assembly for minimizing cross-contamination between tests. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.

The utility model provides a sliding block with multidirectional buffering, which belongs to the technical field of mechanical parts and comprises a base, a supporting side plate is arranged above the base, a positioning sliding block is arranged on the back surface of the supporting side plate, and the sliding block further comprises a side surface buffering mechanism which is positioned on the front surface of the supporting side plate. According to the positioning sliding block, the impact resistance and the damping capacity of the positioning sliding block in multiple directions are remarkably improved by integrating the side face buffering mechanism and the front face buffering mechanism, the side face buffering mechanism is located on the front face of the supporting side plate, buffering can be provided when the positioning sliding block is subjected to lateral impact, the supporting side plate and the base are protected against damage, and the service life of the positioning sliding block is prolonged. And meanwhile, the stability and the movement precision of the positioning sliding block are guaranteed, the front face buffering mechanisms are arranged on the two sides of the back face of the positioning sliding block respectively, when the front face of the positioning sliding block is impacted or overloaded, energy can be absorbed and dispersed, and the influence on the positioning sliding block and the whole guide rail system is reduced.

The application discloses the technical field of optical platform, and particularly provides an optical platform with good vibration isolation effect, which comprises an optical platform body, a vibration isolation device and a load-bearing damping device, the optical platform body is supported and connected through the vibration isolation device and the load-bearing damping device, and the optical platform body can stably place optical equipment, the vibration isolation device is arranged around the bottom of the optical platform body, and the vibration isolation device can isolate vibration of the four corners of the bottom of the optical platform body, the application can isolate the vertical vibration direction of the placing platform, increase the vertical vibration isolation capacity of the placing platform, and isolate the side of the placing platform and increase the damping capacity of the side of the placing platform.

The utility model relates to a novel brick making machine vibration device, the bottom of a vibration mechanism is fixedly connected with a noise reduction protection supporting mechanism, a connecting mechanism is arranged between a vibration operation table and the noise reduction protection supporting mechanism, the noise reduction protection supporting mechanism comprises four fixing columns, four noise reduction baffles are connected among the outer surface walls of the four fixing columns in a sliding mode, and the noise reduction baffles are connected with the vibration operation table. The number of the connecting mechanisms is four, the four connecting mechanisms are connected to the four fixing columns correspondingly, the upper fixing plate is fixedly connected to the bottom wall of the vibration operation table, the upper limiting barrel is fixedly connected to the bottom wall of the upper fixing plate, the lower fixing plate is fixedly connected to the top faces of the fixing columns, and the lower limiting barrel is fixedly connected to the top wall of the lower fixing plate. Two ends of the connecting spring are respectively clamped in the upper limiting barrel and the lower limiting barrel; effective damping capacity is provided through the arranged connecting mechanism according to the elasticity of the connecting mechanism, the outer surface walls of the fixing columns are shielded and sealed through the noise reduction baffles, and the noise transmission effect is effectively reduced.

The present invention relates to a Fe-Cr-based damping alloy and a preparation method and application thereof. The preparation method comprises the following steps: step one: the Fe-Cr-based alloy ingot obtained by vacuum melting is kept at 900-1100°C for a certain period of time, and then cooled with the furnace; step two: the alloy material treated in step one is annealed in a high-temperature single-phase region, and then the temperature is lowered to a two-phase structure temperature region for aging treatment, and after quenching treatment, a Fe-Cr-based damping alloy having excellent mechanical properties and wide temperature range, low amplitude, and high damping is obtained. The Fe-Cr-based damping alloy prepared by the present invention has a stable damping platform within a wide temperature range and is very sensitive to low-amplitude micro-vibration response, which can improve the damping capacity of the Fe-Cr-based damping alloy within a wide temperature range at low amplitude while maintaining excellent mechanical properties.

The invention belongs to the related technical field of structural vibration control, and discloses a variable damper and equipment based on variable pitch thread transmission, the variable damper comprises a magnetic metal shell, and a center driving sliding disc, a variable pitch threaded rod and a peripheral eddy current disc which are respectively arranged in the metal shell, the variable pitch threaded rod is sleeved with the center driving sliding disc, and threaded connection is formed between the center driving sliding disc and the variable pitch threaded rod. The peripheral eddy current disc is connected to the central driving sliding disc; the metal shell can provide a magnetic field; and the thread spacing of the variable-pitch threaded rod is in nonlinear distribution. Forced linear vibration is converted into nonlinear rotation through the variable-pitch threaded rod, geometric amplification of the rotating speed and electromagnetic dissipation power is achieved under limit displacement by means of the thread pitch characteristic that the thread pitch is distributed in a nonlinear mode, powerful anti-top-rushing protection is provided, and the variable-damping capacity with the stroke self-adaption function is achieved.

To efficiently increase damping capacity for vertical vibration between a floor member and a floor structure.SOLUTION: A vibration control structure disposed between a floor member and a floor structure comprises: a first member having one end pin-connected to the floor structure and rotatable around a first rotation axis via the pin connection; a second member having one end pin-connected to the floor member and rotatable around a second rotation axis via the pin connection, in which the second rotation axis is parallel to the first rotation axis; and a viscoelastic damper connecting the other ends of the first and second members.SELECTED DRAWING: Figure 2

The utility model relates to the field of magneto-rheological dampers, and discloses a multi-coil magneto-rheological damper which comprises a dust cover, one side of the dust cover is detachably arranged on a cylinder barrel, multiple sets of coils are installed in the cylinder barrel, multiple sets of magnet vanes are arranged between the multiple sets of coils, and multiple sets of magnet vanes are arranged between the multiple sets of coils. A plurality of damping channels are installed in the cylinder barrel, a plurality of sets of damping channels are arranged on one side of the magnetism isolating plate, a left end cover is installed between the dustproof cover and the cylinder barrel, a right end cover is installed on the other side of the cylinder barrel, and a first O-shaped sealing ring is installed on the surface of the right end cover. Through the arrangement of the damping channels and the coils, the damping force during triggering can be conveniently increased through the multiple sets of damping channels arranged through the design, so that the damping effect is improved, grading adjustment is achieved through the multiple sets of coils according to requirements, the reliability of the damping capacity is further improved, and good use prospects are achieved.

The elastically-connected high-damping three-way shock absorber comprises an outer shell (6) and a middle shaft (2), the outer shell (6) is in a barrel shape, the middle shaft (2) is installed at the barrel bottom through an axial supporting mechanism (14), a cylindrical inner shell (10) is embedded in the outer shell (6), the inner shell (10) is connected with the middle shaft (2) through a horizontal connecting piece, and the upper end of the middle shaft (2) penetrates out of the center of an upper end cover (3) of the outer shell (6); the outer shell (6), the inner shell (10) and the middle shaft (2) are of a rigid structure, and the horizontal connecting piece, the upper end cover (3) and the axial supporting mechanism (14) are of an elastic structure. The three-direction vibration reduction capacity is achieved, and axial, radial and torsional vibration energy can be absorbed through the structural design of the upper-layer horizontal connecting piece, the middle-layer horizontal connecting piece and the lower-layer horizontal connecting piece.

The invention discloses a constructional engineering pipeline protection device, and relates to the technical field of constructional engineering. The device comprises a U-shaped bracket, bracket supporting legs, a bracket fixing mechanism, a pipeline fixing assembly, a sunshade protection assembly and a buffering and damping assembly, the pipeline fixing assembly achieves elastic clamping through a first guide rod with a limiting spring, and a rubber pad is arranged in the arc-shaped groove. The buffering and damping assembly forms a multi-stage damping system through the synergistic effect of a movable ring, a resistance spring, a supporting rod, a damping buffering rod and a buffering spring. The support fixing mechanism is firmly fixed to the ground through a screw and a taper threaded block. The problems that in the prior art, the damping capacity is insufficient, and the environmental adaptability is poor are effectively solved, impact vibration can be efficiently absorbed, pipeline displacement and loosening are prevented, sunshade and rainproof protection is provided, and the stability and safety of the pipeline in the complex construction environment are remarkably improved.

The utility model discloses a base structure of a coaxial machine, which belongs to the technical field of coaxial machines, aims to solve the problems of poor adjusting flexibility and insufficient damping capacity, and comprises a support frame, a mounting table and a mounting seat, the mounting seat is fixedly mounted at the top of the mounting table and used for mounting and fixing the coaxial machine, and an adjusting mechanism is arranged in the support frame. The mounting table is arranged on the upper portion of the supporting frame in a lifting adjusting mode through an adjusting mechanism, trundles are fixedly connected to the four corners of the bottom of the supporting frame, an access hole is formed in the front side of the supporting frame in a hinged mode through hinges, a controller is fixedly connected to the surface of the front side of the mounting table, and a buffering mechanism is arranged between the mounting table and the adjusting mechanism. According to the utility model, through the arranged adjusting mechanism, the height of the mounting table can be adjusted, so that the use condition of the coaxial machine can be adjusted according to the use condition, the adaptability and the mounting efficiency of the coaxial machine are improved, and the use convenience of the device is further improved.

The utility model relates to the technical field of wire harness packaging, in particular to a new energy automobile wire harness packaging device, and aims to solve the technical problems that most wire harness packaging devices are simple in structure, transport vehicles inevitably jolt in the wire harness transport process, the wire harness packaging devices cannot restrain wire harnesses from jolting along with the vehicles, and the transport vehicles cannot jolt along with the vehicles. In the prior art, wire harnesses collide with each other in the device, wire wrapping materials may be damaged, or wire terminals may fall off, and normal use of wires is affected. According to the technical scheme, the new energy automobile wire harness packaging device comprises a label assembly, a damping assembly, a packaging assembly, a fixing assembly, a limiting assembly and a buffering assembly; compared with a traditional wire harness packaging device which is poor in damping capacity and prone to causing damage to a wire harness in a package along with bumping of a vehicle, the wire harness packaging device reduces the influence of bumping of the vehicle on the wire harness in the package and guarantees normal use of the wire harness by adding the damping structure.

The present application relates to parking equipment support damping technical field, proposed multilayer lifting transverse parking equipment damping device, support and support piece connection, support piece has accommodating space for placing a plurality of damping unit. Damping unit includes: upper cover, lower cover and elastic piece. Upper cover, support piece, support are connected in turn, lower cover is arranged on the building and is arranged in the support piece, and a cavity is formed between the upper cover and the lower cover for placing the elastic piece. The two ends of the elastic piece act on the upper cover and the lower cover respectively. When the building with embedded shock absorber is damaged by earthquake, cracking and other major disasters, the support piece is supported first, and the damping unit starts to work when the support piece is deformed. In this way, the problem that the shock absorber loses damping capacity when the embedded building has a large damage vibration is effectively solved.

The invention discloses an aerostatic bearing for an aluminum alloy melt rotary blowing degasser, the aerostatic bearing is mounted on a shaft, an inert gas input hole is formed in the shaft, the aerostatic bearing comprises a bearing inner body and a bearing outer body, the bearing outer body is provided with an air inlet and an annular air cavity, and the air inlet is communicated with the annular air cavity. A plurality of throttling holes communicated with the annular air cavity, an air storage cavity and a plurality of damping holes are formed in the bearing inner body; the two ends of each throttling hole are communicated with the air cavity and the damping hole respectively, each damping hole is communicated with the air storage cavity, and the air storage cavity is located on the bearing working face. When the aerostatic bearing is subjected to external impact and vibrates, the extrusion film effect of air in the air storage cavity plays a role of an air spring, and the damping capacity of the aerostatic bearing is effectively improved in combination with friction damping of the multiple damping holes; the combined action of the air spring action of the air storage cavity and the friction damping action of the damping hole can increase the loading capacity, and the device can adapt to the working environment with the large load of the molten aluminum rotary injection machine.

The application provides a broadband inertia enhanced vibration isolator and a novel damping track, wherein the broadband inertia enhanced vibration isolator comprises an outer cylinder, a spring, a granular damping inertia container and an inner cylinder, the spring is arranged in the inner cylinder, and the granular damping inertia container is sleeved in the spring; the granular damping inertia container comprises a ball screw pair, a flywheel containing granular substances and a base, the flywheel is coaxially fixedly connected with the ball screw pair at a nut of the ball screw pair; a first end of the ball screw pair is fixedly connected on the outer cylinder, and a second end is connected in the base and can rotate around an axis. The broadband inertia enhanced vibration isolator provided by the application is composed of an outer cylinder, a spring, an inner cylinder and other components, the granular damping inertia container in the broadband inertia enhanced vibration isolator is both an inertia container and a granular damper, and is applied to a track, so that the comprehensive damping capacity of a spring floating slab track in a full frequency band can be effectively improved.

The invention provides a doubly-fed fan rotor side converter current loop LADRC parameter setting method and device. The method comprises the steps that control gain parameters of a doubly-fed fan rotor side converter current loop LADRC are acquired; increasing the bandwidth of the linear expansion state observer and the bandwidth of the controller in proportion until the noise causes the output fluctuation or oscillation of the system; finely adjusting the bandwidth of the linear expansion state observer and the bandwidth of the controller; finely adjusting the proportional gain parameter and the second linear parameter until the closed-loop dynamic performance of the system reaches the expected dynamic performance, and recording an undetermined parameter set under the current control gain parameter; after the control gain parameter is changed, the steps are repeated to obtain multiple sets of undetermined parameters; and LADRC parameters meeting the requirements are selected according to a preset standard. The parameter setting method is simple and easy to implement, gives full play to the immunity and damping capacity of LADRC, and is superior to an existing additional damping control strategy.

The utility model discloses an adjustable hoisting damper. Relates to the field of hoisting equipment and comprises a guide cylinder body, a partition plate and two pistons, guide rods are arranged on the two pistons, and the two guide rods are arranged in a mirror image mode relative to the partition plate; one end of the guide rod extends out of the guide cylinder body, the guide rod is coaxially sleeved with an adjusting plate, a damping spring is arranged on the adjusting plate, and the two ends of the damping spring are connected with the adjusting plate and the inner wall of the guide cylinder body respectively; the guide cylinder body is further provided with a driving assembly used for driving the adjusting plate to slide. According to the damper, through the arrangement of the adjusting block and the limiting assembly, limiting of the limiting assembly on the guide rod is omitted, the guide rod is rotated, and the relative position of the adjusting plate on the guide rod is changed, so that the initial pre-tightening force of the damping spring is changed, the damping capacity of the damper can be adjusted, and the damper is better suitable for different working conditions.

The invention provides a vibration reduction structure, a loudspeaker module and a terminal, the vibration reduction structure comprises a bushing, an elastic member and a restraint member, and the bushing is used for being fixedly connected with a mounting rack. The elastic piece is arranged on the periphery of the lining in a sleeving mode, the elastic piece is provided with a connecting groove, the connecting groove is recessed from the peripheral face of the elastic piece, and the connecting groove surrounds the periphery of the elastic piece and is used for being connected with a loudspeaker cover. The restraining piece is embedded in the elastic piece and surrounds the lining, and the strength of the restraining piece is larger than that of the elastic piece. According to the embodiment of the invention, the vibration reduction capability of the vibration reduction structure can be optimized, and the vibration of the loudspeaker can be prevented from driving the mounting structure to vibrate or resonate with other structures of the terminal.

The application provides a low-frequency broadband multistage metamaterial radial damping bearing system, which comprises a bearing seat and a bearing base connected with the bearing seat, and is characterized in that the bearing seat comprises a bushing, a local resonance type metamaterial damping layer and an outer shell arranged in sequence from inside to outside, and the bearing base comprises an array type metamaterial damping layer. The local resonance type acoustic metamaterial and the array type acoustic metamaterial are introduced into the bearing seat, the special properties of the metamaterial are combined, two metamaterial damping layers are arranged in the radial bearing system, the two metamaterial damping layers can inhibit bidirectional vibration transmission of self-excitation vibration of a rotor system and external excitation, and have excellent low-frequency broadband damping capacity.