91 results about "Viscoelastic damping" patented technology

The invention provides a robust optimization method and device for a low-frequency sound absorption metamaterial, and relates to the technical field of punching, and the method comprises the steps: obtaining a response function of a target metamaterial through employing a linear one-dimensional rheological model; determining a target coupling region by using an imaginary part of a transfer function zero point corresponding to the response function or a size relationship between inherent loss and radiation loss as a coupling criterion, and determining a closed coupling region where a preset parameter point is located as an initial robust region; the target coupling region comprises a closed coupling region; the preset parameter point meets the one-dimensional frequency domain response of the target metamaterial; and determining the size of the initial robust region by using the Lexberg measure of the Euclidean space, and optimizing the robust region by maximizing the Lexberg measure of the initial robust region in the Euclidean space to obtain a target robust region. According to the method, the maximum robust region in the parameter space is found through maximum measurement, so that the response characteristics of the viscoelastic damping material under the actual working condition can be accurately described.

The invention belongs to the technical field of structural engineering, and relates to a self-resetting lateral force resisting module suitable for a beam through type frame. According to the technical scheme, a rotating support is an obtuse-angle triangular frame composed of an inclined support and a horizontal beam, the obtuse-angle top of the obtuse-angle triangular frame is hinged to the bottom of an upper-layer main beam of a beam-through type frame, and the center of the horizontal beam of the obtuse-angle triangular frame is connected with a thorn ring-disc spring reset system; the acute angle of the obtuse triangle frame is connected with an inner wedge-shaped plate-disc spring reset system and an outer wedge-shaped plate-disc spring reset system; the viscoelastic damping groove is connected to the lower portion of the horizontal beam and located between the thorn ring-disc spring reset system and the inner wedge-shaped plate-disc spring reset system and the outer wedge-shaped plate-disc spring reset system. The bottoms of the thorn ring-disc spring reset system, the viscoelastic damping groove, the inner wedge-shaped plate-disc spring reset system and the outer wedge-shaped plate-disc spring reset system are fixedly connected with the upper portion of a lower layer main beam of the beam through type frame. The characteristics of a beam through type steel frame are fully matched, and the weak layer effect of the beam through type steel frame in the application of a high-rise building structure in the background technology is solved.

The invention discloses a multi-stage assembly type viscoelasticity-metal toughness damper and a vibration reduction method, and belongs to the technical field of engineering structure vibration reduction. The damper comprises a viscoelastic damper unit, a metal damper unit and an SMA self-resetting unit. The viscoelastic damper unit is composed of a constraint steel plate and a viscoelastic material layer which are laminated, and the two ends of the viscoelastic damper unit are connected with the first connecting plate and the second connecting plate correspondingly. The metal damper unit comprises outer restraining plates arranged on the two sides of the viscoelastic unit and metal energy dissipation webs connected between the outer restraining plates and the connecting plates. The SMA self-resetting unit comprises a force transmission steel plate, a stress steel plate and an SMA component. According to the damper, the viscous-elastic material is used for shearing and dissipating energy under small shock or wind vibration, the SMA component provides reset force, and the metal web keeps elasticity; the metal webs conduct buckling energy dissipation under medium earthquakes or large earthquakes and work in cooperation with the viscoelastic units and the SMA units, the energy dissipation capacity is remarkably improved, and residual deformation is controlled. The device has the advantages of multi-stage collaborative energy consumption, good self-resetting performance, assembling capability and easiness in maintenance.

The invention relates to the technical field of cables, provides an environment-friendly marine cable, and aims to solve the technical problem that an existing marine cable is insufficient in comprehensive protection capability. The cable sequentially comprises a cable core conductor, an insulating layer, an inner protective layer, a viscoelastic damping and stress decoupling layer, a dual-function sacrificial hydrogel layer and a high-durability environment-friendly outer sheath from inside to outside. By the adoption of the technical scheme, integrated cooperative protection of the structure and materials can be achieved, dual active protection on moisture and salt mist is provided, the cable is endowed with excellent mechanical stress tolerance, and high environmental protection performance and long-period durability of the cable are guaranteed.

The invention relates to the technical field of structural engineering, in particular to a stable friction damper with segmented positive and negative stiffness characteristics and a modeling method of the friction damper. The friction damper comprises supports, and a pre-compression spring assembly, a lever assembly, a viscoelastic damper assembly and a rotating friction assembly which are arranged between the supports; the pre-compression spring assembly is used for achieving the negative stiffness effect, the lever assembly plays a role in increasing the force and the negative stiffness effect, and the pre-compression spring assembly and the lever assembly form a stable triangular deformation structure. The rotating friction assembly is used for providing friction damping force and guaranteeing the stability of the structure when the pre-compression spring assembly and the lever assembly rotate relatively. The viscoelastic damper assembly is used for applying vibration reduction control force to the structure when small-amplitude vibration of the structure is not enough to drive the friction surface to slide. The invention further provides a corresponding modeling analysis method, and the dynamic behaviors of the device in different working stages are accurately described.

The invention belongs to the technical field of rubber composite materials, and provides a low-noise rubber track composite material and application thereof. A double-filler synergistic damping design of montmorillonite / silicon carbide composite filler and carbon black grafted with a damping functional polymer is adopted, montmorillonite is loaded on the surface of silicon carbide in an intercalation-stripping composite structure, the stripping degree is 60-90%, the polymer is grafted on the surface of carbon black through a silane coupling agent, the grafting density is 0.3-0.8 chains / nm < 2 >, the mass ratio of the two fillers is 1.5: 1-3: 1, and the damping functional polymer is grafted on the surface of carbon black through a silane coupling agent. And a dual noise reduction mechanism in which rigidity enhancement and viscoelastic damping are cooperated is formed. The loss factor tan delta is larger than or equal to 0.15 in the frequency range of 20-1000 Hz, and compared with a conventional material, the noise is reduced by 10-30 dB. The invention solves the technical problems of poor damping effect and weak noise control capability of the traditional rubber track material, and has wide application value in the fields of engineering machinery tracks, automobile tires, shock absorption and noise reduction materials and the like.

The utility model discloses a double-sided plane grinding and polishing machine, which relates to the technical field of grinding and polishing equipment, aims to solve the technical problem that ultrathin or fragile products are easily damaged by the current double-sided lapping machine, and comprises a double-sided lapping machine, an outer matching ring, a lower grinding disc, a butt joint seat and a wandering star wheel. The wandering star wheel is composed of the hollowed-out ring and the butt joint gear ring, the reinforcing frame is arranged in the hollowed-out ring, on the premise that the strength of the wandering star wheel is guaranteed, unnecessary materials are removed, the mass of the wandering star wheel is reduced, and therefore inertia is reduced, meanwhile, a composite buffering structure is arranged in the wandering star wheel, and the service life of the wandering star wheel is prolonged. The first buffer layer of the composite buffer structure is made of elastic rubber and can absorb most impact force generated by inertia of the wandering star wheel, the damping layer is made of viscoelastic damping materials and can effectively restrain transmission of vibration, and the second buffer layer is made of silica gel and further buffers and disperses acting force on a product. And the phenomenon that ultrathin or fragile products are damaged in the machining process can be effectively avoided.

The invention belongs to the technical field of shock absorbers, and discloses a viscoelastic-superelastic shape memory alloy composite shock absorber and a working method.The viscoelastic-superelastic shape memory alloy composite shock absorber comprises a viscoelastic damping energy dissipation unit, and a limiting unit is installed in the viscoelastic damping energy dissipation unit; superelastic energy dissipation units are mounted on the two sides of the viscoelastic damping energy dissipation unit; by combining the advantages of a traditional viscoelastic damper and a hyperelastic shape memory alloy damper, the dynamic response of a building structure under different vibration frequencies in a wide deformation domain can be effectively controlled; and meanwhile, the contribution of the shock absorber to the damping force and the self-recovery force of the structure can be optimized by adjusting the viscoelastic damping energy dissipation unit and the hyperelastic energy dissipation unit, so that the failure damage probability of the structure is reduced, and the shock absorber can provide stable shock absorption capacity in a wide temperature range, a wide frequency range and a wide strain range.

The utility model discloses a magnetorheological sound insulation cotton damping with anti -interference structure relates to sound insulation material technical field, including sound insulation cotton layer and anti -interference structure layer. The composite electromagnetic shielding layer of the magnetorheological sound insulation cotton damping with anti -interference structure outermost layer is alternately woven composite by nanometer copper net and graphene film, can be all -round shielding to electromagnetic interference, creates stable electromagnetic environment for the inside magnetorheological liquid filling cavity, effectively avoids the outside electromagnetic signal interference magnetorheological liquid response to the magnetic field, guarantees its rheological characteristic stable play, the three -dimensional shock attenuation layer of inner layer adopts the even arrangement of hexagonal honeycomb -like elastic rubber film and viscoelastic damping block, and is matched with interval distribution's shock attenuation spring and shock attenuation rubber block, can form multistage shock attenuation system, effectively absorbs and buffers mechanical vibration, greatly reduced the influence of outside vibration to sound insulation cotton layer and magnetorheological liquid filling cavity, has improved the reliability of product under complex vibration environment significantly.

The invention discloses a self-repairing road concrete pipe with an anti-seismic structure, and relates to the technical field of civil engineering materials and structural seismic resistance. The structure comprises a concrete pipe joint, a repairing liquid main pipe network, an asphalt damping bonding layer and a high-density polyethylene exoskeleton which are sequentially and coaxially arranged from inside to outside, and the repairing liquid main pipe network is attached to the outer wall of the concrete pipe joint and filled with repairing liquid; the asphalt damping bonding layer coats the asphalt damping layer and the asphalt damping layer and provides viscoelastic damping; the high-density polyethylene exoskeleton is arranged outside in a sleeving mode, a mechanical weak line is arranged on the pipe wall of the high-density polyethylene exoskeleton, and seismic resistance and self-repairing are achieved through a three-stage mechanism: in the first stage, the exoskeleton dissipates main energy through plastic deformation of the weak line; in the second stage, the asphalt layer absorbs residual energy through viscous deformation; and in the third stage, when the concrete pipe cracks, the asphalt layer transmits deformation to the repairing liquid pipe network and enables the repairing liquid pipe network to be broken, and precise self-repairing is achieved. The structure integrates efficient energy consumption and repairing functions, and the anti-seismic toughness and durability of the underground pipeline are improved.

The present invention provides a damping rubber composition that can form a damping member with excellent damping properties in low-strain areas such as wind sway, while suppressing adhesion to rolls and having good processability. [Solution] The damping rubber composition contains (a) a base rubber, (b) a tackifier, (c) carbon black, (d) an inorganic filler with a particle size of 3 μm or more as measured by the air permeability method, and (e) a fatty acid derivative as a lubricant, wherein the (a) base rubber contains at least one selected from the group consisting of polyisoprene rubber and polybutadiene rubber, and the amount of (b) tackifier is 70 to 110 parts by mass, the amount of (c) carbon black is 100 to 160 parts by mass, the amount of (d) inorganic filler is 5 to 100 parts by mass, and the amount of (e) lubricant is 0.5 to 10 parts by mass per 100 parts by mass of the (a) base rubber.

The invention discloses a hybrid self-resetting support provided with a rate-dependent viscoelastic damper, which belongs to the technical field of seismic resistance of structural engineering, and comprises an outer pipe, an inner plate, a viscoelastic damper, a shape memory alloy U-shaped damper and channel steel, the viscoelastic damper is formed by stacking a viscoelastic material layer and a steel plate, is fixed between the inner plate and the outer pipe, and is arranged at the end part of the inner plate; when an earthquake acts, the inner plate moves in the axial direction relative to the outer pipe, the viscoelastic material layer is driven to be subjected to shear deformation, and damping force related to the loading frequency is provided; in addition, a plurality of shape memory alloy U-shaped dampers are arranged between the inner plate and the outer pipe at intervals in the supporting axial direction, and the self-resetting capacity is provided through bending deformation. The U-shaped damper and the viscoelastic damper are stressed in parallel, damping energy consumption and restoring force are generated at the same time, the floor acceleration and the base shearing force can be effectively reduced, and the device has the advantages of being simple in structure and reliable in connection.

To provide a viscoelastic damper capable of suppressing deterioration over time due to temperature changes in the installation environment. [Solution] The viscoelastic damper comprises a pair of plate-shaped bodies, a viscoelastic body arranged between the pair of plate-shaped bodies, and a sealing member that isolates the viscoelastic body from the outside, and the sealing member is arranged between the pair of plate-shaped bodies at a position away from the outer peripheral surface of the viscoelastic body.

damping device (40) for an optical system, in particular a projection optic (10) of a lithography system (1), comprising - a supporting, first element (42), in particular a support frame (34) for receiving at least one optical element (36); - a second element (50) incorporated in the first element (42), in particular the optical element (36); and - at least one damping element (38) arranged between the first element (42) and the second element (50), in particular a mechanical end stop, wherein the damping element (38) has a liquid crystalline elastomer (48) with viscoelastic damping properties.

The invention discloses a combined support combining a bio-based composite material framework and a high-performance filling material and a preparation process of the combined support, and belongs to the technical field of bridge engineering materials. According to the support, a porous net-shaped framework is made of a polylactic acid-based composite material, an interface bonding layer is formed on the inner surface of a framework pore through a bio-based polyurethane adhesive, and natural rubber, a viscoelastic damping material or a shape memory alloy complex is poured to serve as a high-performance filling material. The preparation process comprises the key steps of framework compression molding, interface treatment, vacuum pressure filling, segmented vulcanization and the like. According to the technical scheme, through the synergistic effect of the bio-based framework and the functional filling body, the bearing stability and environmental adaptability of the support are remarkably improved, meanwhile, the advantages of being high in maintainability and low in whole life cycle cost are achieved, the support is particularly suitable for a corrosive environment or a bridge engineering scene with the high anti-seismic requirement, and the application prospect is wide. And the balance between mechanical properties and ecological benefits is realized.

The invention relates to the technical field of building materials, and discloses a multi-surface-layer decorative sound-absorbing partition panel manufacturing process which comprises the steps that a multi-surface-layer decorative panel and a back plate are fixed to form a closed cavity; mixing the composite functional resin system and the curing and synergistic system under a specific pressure, and injecting the mixture into the cavity; and carrying out in-situ reaction at a specific temperature to foam and cure the mixture to form the viscoelastic damping core material which is integrally connected with the panel. The technical core is that the composite functional resin system comprises a self-adaptive interface coupling agent, the coupling agent can spontaneously migrate to the inner surface of the panel and be enriched in the in-situ reaction process, an interface of a core material and the panel is constructed by forming chemical bonding, and a traditional adhesive layer is replaced. The production process is simplified; a traditional adhesive is replaced by chemical bonding, so that the interface bonding strength is improved, and the acoustic bridge effect is avoided; through specific core material components, the board has excellent sound insulation and vibration damping performance.

The invention discloses a mechanical retention optical fiber Fabry-Perot liquid level sensor capable of calibrating the cavity length and a method. The sensor comprises a base, an inner conical surface fixing nut, a ceramic ferrule, an adjusting rod, a viscoelastic damping block, a high-reflectivity sensitive diaphragm, a diaphragm fixing screw, a diaphragm fixing block and an F-P cavity. The adjusting rod and the ceramic ferrule are tightly connected through interference fit. A conical surface self-locking jacket is arranged in the base and is matched with an inner conical surface fixing nut to form an axial adjusting and fixing assembly, and accurate mechanical fixing and radial fixing of the ceramic ferrule at any axial position are achieved. Meanwhile, a square notch is reserved in the other end of the base and used for installing the high-reflectivity sensitive diaphragm assembly. According to the sensor structure, the ceramic ferrule and the base can be coaxial, mechanical retention is stabilized, the parallelism of the end face of the ceramic ferrule and the sensitive diaphragm is guaranteed, and the multi-application-scene adaptability of the sensor is guaranteed.

This utility model discloses a connection structure for a plate viscoelastic damper in a structure, used for connecting the viscoelastic damper to the main structure. It includes: a plate viscoelastic damper, a pin, and connecting parts. The plate viscoelastic damper consists of connecting steel plates on both sides, a connecting steel plate in the middle, and a viscoelastic damping layer. The viscoelastic damping layer is formed by alternating layers of rubber and steel plates, vulcanized and bonded. The connecting parts consist of double-clamped plates, a single-clamped plate, and a pin. This utility model utilizes the pin and connecting parts to connect the viscoelastic damper to the structure, avoiding the high temperatures generated during welding from damaging the rubber layer in the viscoelastic damping layer. It also facilitates later maintenance and replacement of the viscoelastic damper by disassembling the pin. This solves the accuracy and quality problems in the production and installation processes of plate viscoelastic dampers, effectively improving construction efficiency and installation quality.

The application provides an assembled staged viscoelastic-friction composite damper, belonging to the technical field of dampers, which comprises a viscoelastic damping unit, a self-resetting friction damping unit and an intermediate connecting plate, the viscoelastic damping unit and the self-resetting friction damping unit are arranged on the two sides of the intermediate connecting plate; the viscoelastic damping unit and the self-resetting friction damping unit each comprise two fixed plates and one movable plate, the fixed plates are connected to the intermediate connecting plate, and the movable plate is arranged between the two fixed plates; a plurality of viscoelastic material blocks are arranged between the fixed plate and the movable plate of the viscoelastic damping unit, and a plurality of friction plates are arranged between the fixed plate and the movable plate of the self-resetting friction damping unit; a plurality of SMA wires are further connected between the fixed plate and the movable plate of the self-resetting friction damping unit, and the SMA wires are used for limiting the displacement of the movable plate along the length direction of the fixed plate; the application can avoid invalid wear of the self-resetting friction damping unit and damage of the viscoelastic damping unit, and effectively dissipate energy and damp.

The application belongs to the technical field of structural vibration control devices, and discloses a high-stability multidirectional vibration isolator. The vibration isolator comprises horizontally arranged upper and lower steel plates, a spiral spring fixed between the upper and lower steel plates, a threaded sleeve and a viscoelastic damping block. The threaded sleeve is rigidly connected to the upper and lower steel plates and located outside the spiral spring. The viscoelastic damping block is arranged in the spiral spring and fixed below the upper steel plate and above the lower steel plate. The viscoelastic damping block is a curved surface. The application improves the vertical vibration isolation effect and displacement control capacity of the spring vibration isolator, makes up for the horizontal vibration isolation defects caused by the insufficient lateral stability of the spring vibration isolator, increases the application scenarios of the spring vibration isolator, and does not excessively increase the implementation complexity, thereby facilitating application.

Viscoelastic damper assembly applicable both in air and submerged applications and with improved efficiency over prior art solutions for adding damping to an object or structure.

This invention relates to the field of vibration reduction system technology, specifically to a broadband damping composite system, its construction method, and its application. The broadband damping composite system comprises a viscoelastic damping layer, an adhesive layer, and a magnesium alloy restraint layer; the viscoelastic damping layer is made of butyl rubber, acrylate polymer, or polyurethane. This invention also provides a construction method for the broadband damping composite system, including the following steps: bonding the viscoelastic damping layer and the magnesium alloy restraint layer together using an adhesive layer to obtain the broadband damping composite system. This invention further provides an application of the broadband damping composite system obtained by this construction method in steel structure floor slabs. This invention solves the problem that existing building damping systems struggle to simultaneously achieve high energy efficiency, extreme lightweight design, broadband adaptability, and ease of implementation.

The application discloses an electric arc additive and multi-directional loading device cooperative operation welding gun system and a rigidity and damping cooperative control method thereof, the system comprises an anti-vibration welding gun neck assembly, an anti-interference wire feeding hose assembly, a controller and an avoidance trigger sensor; the anti-vibration welding gun neck assembly adopts a multilayer damping composite bellows structure, adjusts the rigidity of the gun neck through circumferentially distributed independent sealed air pressure chambers, and cooperates with a viscoelastic damping layer to realize wideband vibration damping; the anti-interference wire feeding hose assembly adopts an axial partition type electromagnetic shielding structure, cooperates with an active electromagnetic cancellation structure to realize full-band anti-electromagnetic interference; the control method has multiple working modes such as rigid posture keeping, flexible avoidance synchronous arc extinguishing, posture resetting, vibration active suppression, electromagnetic active cancellation and the like. The application effectively solves the vibration interference, electromagnetic interference and collision safety problems during the electric arc additive and multi-directional loading device cooperative operation, and significantly improves the stability and forming quality of the electric arc additive manufacturing process.

The invention discloses a mute composite board for a new energy vehicle, the mute composite board is used for forming a structural component of the new energy vehicle, and the mute composite board comprises a first base material layer, a viscoelastic damping layer and a second base material layer which are stacked in sequence; the viscoelastic damping layer does not contain a conductive substance; when the viscoelastic damping layer is in the temperature range of 0-80 DEG C, the damping loss factor is larger than or equal to 0.1, the damping peak value is larger than 0.2, and the attenuation of the damping loss factor and the bonding strength of the mute composite board does not exceed 10%-20% of the initial value within 10 years. The mute composite board for the new energy vehicle has excellent damping performance, bonding strength and durability, noise of the new energy vehicle can be effectively reduced, riding comfort is improved, and the technical bottleneck that performance of different temperature regions cannot be considered at the same time through traditional materials is solved.

The present invention discloses an assembled self-centering viscoelastic seismic toughness improvement system and method, which includes an outer steel plate assembly, a viscoelastic damper, a diagonal bracing steel plate and three SMA self-centering dampers; the viscoelastic damper is connected to a beam or a column through the outer steel plate assembly, and both ends of the SMA self-centering damper are hinged to the viscoelastic damper and the joint steel plate respectively; during minor earthquakes, the SMA self-centering damper and the viscoelastic damper jointly deform to dissipate energy and reduce vibration; during major earthquakes, the SMA self-centering damper reaches its limit value, and mainly relies on the shear deformation of the viscoelastic damper to dissipate energy and reduce vibration; the SMA material in the composite damper gives the device a certain self-centering ability, changing the structural design from "ductility" to "toughness", and all components are connected in an assembled manner, which is beneficial to the local replacement of damaged components after an earthquake, and increasing the design goal from "life safety" to "performance recovery".

The invention provides a shear restraint layer damping type pulse magnet coil and a preparation method thereof, and the pulse magnet coil comprises a coil body which forms an annular magnet structure; the structural shape of the insulating structural body is matched with the appearance of the coil body, and the insulating structural body wraps the outer side of the coil body, is made of an insulating material and is used for limiting the radial deformation of the coil body; and the viscoelastic damping layer is arranged between the coil body and the insulating structural body, wraps the coil body and is made of a viscoelastic material, and the two sides of the viscoelastic damping layer are fixedly connected with the outer surface of the coil body and the inner surface of the insulating structural body respectively. When pulse current is introduced into the coil body to generate vibration, the viscoelastic damping layer generates shear deformation along with vibration of the coil body and the insulation structure body, vibration mechanical energy is converted into heat energy through the viscoelastic material to be dissipated, and meanwhile axial and radial vibration reduction is conducted on the coil body. The structure is simple, the cost is lower, and radial and axial vibration reduction and fatigue resistance of the pulse magnet coil can be considered.

This invention discloses a spacer and a spacer installation system. By connecting a conductor connection mechanism to an insulator, the insulator is fixed to the conductor using the clamps of the conductor connection mechanism. A silicone rubber pad increases the friction between the clamps and the conductor, allowing the conductor to better transfer vibration energy to the conductor connection mechanism during vibration. In the conductor connection mechanism, the viscoelastic damping material of the clamps initially eliminates the transmitted vibration energy. Then, a secondary elimination of vibration energy occurs using a permanent magnet electromagnetic damper composed of a permanent magnet, bearing, and spring. The vibration energy is transmitted to the spring through the bearing, causing the spring to move in the magnetic field generated by the permanent magnet. Based on the principle of electromagnetic induction, the vibration energy is converted into electrical energy and dissipated. Therefore, this invention can absorb the energy brought by conductor vibration, thereby solving the problem of poor stability in transmission lines caused by vibration.

The invention discloses an energy-absorbing, vibration-reducing and noise-reducing high-speed railway viaduct vibration-reducing effect evaluation method, which comprises the following steps: S1, arranging force sensors and displacement sensors in a restraint layer, a base layer and a damping layer of a high-speed railway viaduct structure, and collecting normal stress of the force sensors and the displacement sensors in three-axis directions, shear stress of x-y, y-z and z-x planes and displacement of the force sensors and the displacement sensors in corresponding directions; s2, performing the following assumptions to calculate a loss factor: (1) the viscoelastic damping material satisfies a linear viscoelastic constitutive relationship; (2) the restraint layer and the base layer meet the plane assumption in the vibration process, namely, the deformation is uniform; (3) the influence of shear deformation and rotational inertia of the structure is neglected; s3, determining the circular frequency of the vibration mode and the first-order mode of the constraint damping structure; s4, calculating strain energy of the constraint layer, the damping layer and the base layer; s5, calculating dissipated energy of the damping layer; and S6, calculating a transverse loss factor and a vertical loss factor in the first-order mode.

The invention discloses an anti-vibration optical fiber connector assembly based on inertia decoupling and viscoelastic damping, and belongs to the technical field of optical fiber sensing. The optical fiber connector assembly comprises: a connector housing assembly; the suspension insertion core module is arranged in the connector shell assembly, and the head of the suspension insertion core module is provided with an optical fiber insertion core; the inertial mass unit is arranged at the tail part of the suspension insertion core module; the viscoelastic damping layer is filled in a gap among the suspension insertion core module, the inertia mass unit and the connector shell assembly, so that the suspension insertion core module is supported in the connector shell assembly in a suspension manner; the viscoelastic damping layer is used for absorbing vibration energy transmitted to the connector shell assembly from the outside and is matched with the inertial mass unit to isolate the influence of vibration on the optical fiber insertion core; on the premise that a standard physical interface is reserved, external high-frequency vibration crosstalk is effectively filtered out through physical isolation, photoelastic effect noise and end face reflection fluctuation are eliminated, and the detection precision and stability of the DAS are remarkably improved.

The application discloses a self-resetting viscoelastic damping support, wherein the flange sections of the upper steel member and the lower steel member are bonded by viscoelastic material to form a damping section; the end of the flange section is opposite to the limiting protrusion of the adjacent reinforcing section and is spaced from each other to form a gap section; the center line of the pulling side of the damping section is symmetrically distributed with an alloy cable group in the vertical bonding side direction, the shape memory alloy cable is at a set angle with the center line, and the two ends of each shape memory alloy cable are respectively threaded through the wire guide hole of the upper steel member pulling side and the wire guide hole of the lower steel member pulling side and fixed on the limiting end head, and the limiting end head is held at the wire guide hole adjacent to the limiting end head. The application has simple structure, clear movement mechanism, can well coordinate deformation and movement, and can show good performance under one-way tension and compression or reciprocating load such as earthquake.