Structural design method of multi-layer perforated plate vibration double-control damper

Abstract

The invention relates to a structural design method of a multi-layer perforated plate vibration double-control damper. The multi-layer perforated plate vibration double-control damper comprises a double-control energy consumption assembly, a bearing assembly, a limiting assembly and a protective cover. The structural design method of the multi-layer perforated plate vibration double-control damper comprises the steps of initial parameter input and target determination, design variable input, preliminary calculation, porosity judgment, target 1 checking, small vibration stage rigidity judgment, target 2 checking, vibration control trigger threshold judgment, target 3 checking, energy consumption target judgment, target 4 checking, fatigue and structural constraint judgment and convergence criterion. And engineering setting, actual measurement verification and result output. The method has the advantages that geometric parameters of a perforated layer and parameters of an interlayer bonding material can be accurately matched according to a calculation method, so that the structure has predictable yield and energy consumption characteristics under different earthquake magnitudes; according to the method, performance adjustability and parameter traceability of the multi-layer structure are achieved by quantitatively judging the porosity and rigidity target, the triggering threshold value and the energy dissipation index.

Description

Technical Field

[0001] This invention belongs to the field of energy dissipation and vibration reduction in building structures, and relates to a structural design method for a multi-layer perforated plate vibration-controlled damper. Background Technology

[0002] Currently, various damper technologies have been proposed and applied in building structures. Existing technologies mainly include viscous dampers, friction dampers, and spring dampers. These devices absorb vibration energy, reduce structural response, and improve seismic resistance. However, traditional dampers are often only suitable for vibrations of specific frequencies, and their energy absorption mechanisms are relatively simple, making them unable to cope with complex and variable vibration environments. Vibration-shock dual-control dampers aim to simultaneously control the vibration and shock (such as earthquake) responses of a structure. Patent CN108756410A, "A pre-compressed ring spring self-centering viscous damper," combines materials with both displacement-related energy dissipation (such as metal yield hysteresis energy dissipation) and velocity-related energy dissipation (such as viscous damping energy dissipation) mechanisms to form a vibration-shock dual-control damper. Representative examples of this core-cladding structure include shape memory alloy-friction composite dampers and metal-viscoelastic composite dampers. For example, in the field of seismic isolation bearings, lead cores are inserted into laminated rubber to form lead core seismic isolation bearings. This achieves composite energy dissipation by introducing the plastic deformation of metallic lead, on top of the rubber providing reset and a certain degree of damping. However, in traditional schemes, the core energy dissipation element is often a single rod or core material (such as a metal core rod or rubber core), which is then covered with another material layer. Although this structure is simple, its energy dissipation structure is limited and its performance in all directions may be asymmetrical. Due to the limitations of the structural form, such dampers often can only provide effective energy dissipation in a single direction, making them poorly adaptable to complex and multidimensional seismic motions. Especially under bidirectional seismic action (horizontal and vertical), traditional dampers struggle to achieve coordinated energy dissipation in both directions, resulting in insufficient lateral and longitudinal coupling control and significant differences in damping effect depending on the direction of the earthquake. When seismic motions originate from different directions, the mechanical response and energy dissipation efficiency of the damper will vary significantly, making it difficult to adapt to the simultaneous action of multidirectional earthquakes. Patent CN114033062A, “A self-resetting multi-directional seismic isolation bearing,” proposes arranging multiple energy-dissipating cores circumferentially in the damping unit to form an energy-dissipating array that is balanced in all directions to adapt to the simultaneous action of multi-directional earthquakes. Patent CN116623821A, “A metal composite damper and device,” also proposes changing the cross-section of the component to a special shape (such as an ellipse) to reduce stress concentration in a single direction, thereby achieving bidirectional energy dissipation.

[0003] However, the aforementioned patented solutions either increase structural complexity and volume, or are still limited by the inadequacy of a single energy dissipation method. In practical applications, they still suffer from problems such as insufficient horizontal and vertical energy dissipation coupling (the horizontal and vertical energy dissipation lacks a coupling and coordination mechanism, and the main energy dissipation components usually only deform in a certain direction), low energy dissipation efficiency and a single mechanism, and easy damage to local structures. Summary of the Invention

[0004] This invention aims to solve the current problem of lacking a practical, scientific, efficient structural design method for multi-layer perforated plate vibration dual-control dampers that is suitable for different buildings and different needs.

[0005] The present invention solves the above-mentioned technical problems through the following technical means: A structural design method for a multi-layer perforated plate vibration dual-control damper, wherein the multi-layer perforated plate vibration dual-control damper includes a dual-control energy dissipation component, a load-bearing component, a limiting component, and a protective cover; the load-bearing component includes an upper load-bearing plate and a lower load-bearing plate, the dual-control energy dissipation component includes a central energy dissipation body, a central fixed core, and a fixed friction plate, located between the upper and lower load-bearing plates, the limiting component includes a limiting plate fixed to the outer side of the load-bearing component, fixing the load-bearing component and the dual-control energy dissipation component, and the protective cover is disposed outside the dual-control energy dissipation component and placed in the middle of the load-bearing component; the structural design method for the multi-layer perforated plate vibration dual-control damper includes the following steps: S1. Initial Parameter Input and Target Determination: S1a. Determine Initial Parameters: Determine Initial value range of parameters; S1b, Determine the hole type: determine the forward staggered or oblique staggered arrangement; S1c, Determine the expected targets: ① Target stiffness range during small vibration stage; ② Target yield range for vibration-controlled triggering; ③ Target energy dissipation or equivalent damping ratio; ④ Fatigue and strain limits, total thickness and structural boundaries; S2. Design Variable Input: Initially select variables or adjust variable data values ​​as needed: ; S3. Preliminary Calculation: ① Calculate porosity ② Calculate the effective shear modulus ; S4, Judgment Is it greater than 0.4? If so, proceed to step S5; otherwise, return to step S2 to readjust the variable. S5, Target 1 Verification: Stiffness during minor vibration stage Calculation and verification; S6, Judgment: Is it within the target range? If it is within the target range, proceed to step S7; if it is not within the target range, perform parameter optimization. If it's too small, then decrease it. , reduce or ,improve ;like If it's too large, then increase it. Appropriately increase Then, substitute the optimized parameters into step 3 and recalculate; S7, Target 2 Verification: Vibration Control Trigger Threshold Calculate, and obtain ; S8, Judgment: If the condition is within the target range, proceed to step S9; otherwise, optimize the parameters. Too small: Increase or Choose the higher membrane material or thickening Increase appropriately when necessary ;if Too large: reduce or reduce Then, the optimized data is brought into step S7 for recalculation; S9. Target 3 Verification: Energy and Equivalent Damping Ratio Assessment: Obtained from steps S5 and S7. , Calculate the hysteresis area using idealized bilinearity. With equivalent damping ratio ; S10. Determine: Is the energy consumption target lower than the target range? If not, proceed to step S11; if lower, optimize the parameters: increase... or increase Add layers Increase Or moderately reduce Increase if necessary or To widen the lap, the optimized parameters are then substituted into step 3 for recalculation; S11, Target 4 Verification: S11a, Strain / Fatigue Verification: Calculate the shear strain of the key layer and the fatigue criterion under the number of cycles; S11b, Structural Constraint Verification: Verify the structural boundaries of the total thickness, connection strength and installation space; S12. Determination: Does the strain / fatigue condition meet the structural constraints? If it does, proceed to step S13; otherwise, perform parameter optimization: if the strain or fatigue condition does not meet the requirements, reduce the single design displacement and increase the... ,improve Reduce if necessary or If the construction constraints exceed the limit: prioritize reducing them. Optimize the assembly; then incorporate the optimized parameters into step S3; S13. Convergence Criterion: All criteria pass on the first attempt; or convergence occurs in two adjacent iterations. , The difference in the amount of change is less than 5%. The difference in the amount of change is less than 2%; S14. Engineering Standardization: Standardized hole type; , Number of floors , film thickness , give the contents Material grade, assembly requirements Number of contact surfaces With contact area parameter; S15. Field Verification: Establish bench tests for small vibration shear stiffness, slip, yield triggering, hysteresis energy, and low-cycle fatigue; conduct field measurements. , ; S16. Output results: ① Output the finalization parameter table; ② Output the verification report.

[0006] This invention employs formula calculations and experimental verification to iteratively optimize the initial parameter values ​​of a multi-layer perforated plate vibration-controlled damper based on actual target requirements and relevant formulas. This process involves calculation, verification, and further calculation, until the final parameters of the damper meet the target requirements. This structural design method can quickly calculate the required damper parameters for different building stiffness targets, maximum displacement or damping ratio targets, fatigue targets, and slip range targets, providing theoretical support for the customization of multi-layer perforated plate vibration-controlled dampers.

[0007] Preferably, the specific method of step S1 is as follows: ① Determine the expected target that the designed damper needs to meet: the target stiffness range during the small vibration stage. 1. The target yield range for seismic control triggering; target energy dissipation and equivalent damping ratio, fatigue and strain limits, total thickness, and structural boundaries; the specific value of the target range depends on the actual engineering needs. 2. Determine the perforation type of the multi-layer perforated plate; 3. Define the manufacturing process for the multi-layer perforated plate vibration-controlled damper. The parameters here are determined based on engineering experience.

[0008] Preferably, the specific method for step S3 is as follows: using the formula Calculate porosity using the formula and formula Calculate the effective shear modulus.

[0009] Preferably, the specific method of step S5 is as follows: using the formula Calculate the stiffness during the small vibration stage The value.

[0010] Preferably, the specific method of step S6 is as follows: based on the stiffness calculated in step S5 Determine whether the value is within the target range in step S1. If it is, proceed to step S7; otherwise, perform the following parameter optimizations: ① Less than the target range: reduce , reduce or ,improve ;② Larger than target range: Increase Appropriately increase Then, substitute the optimized parameters into step 3 and recalculate.

[0011] Preferably, the specific method for step S7 is as follows: Using formula and , Calculate the effective yield shear force Then use the formula Calculate the required interlayer frictional sliding threshold for the target layer. .

[0012] Preferably, step S8 specifically involves: calculating the interlayer friction sliding threshold of the laminated plate based on step S7. Determine whether the value is within the target range in step S1. If it is, proceed to step S9; otherwise, perform the following parameter optimizations: ① Smaller than target range: Increase or Choose the higher membrane material or thickening Increase appropriately when necessary ;② Larger than target range: Reduce or reduce Then, the optimized data is brought into step S7 for recalculation.

[0013] Preferably, the specific method for step S9 is as follows: First use the formula , , , and formulas Calculate the energy consumption of symmetric cycles Then use the formula and formula Calculate the equivalent damping ratio.

[0014] Preferably, the specific method of step S12 is as follows: Based on the shear strain of the key layer calculated in step S11 and the fatigue criterion under the number of cycles, determine whether the value meets the target range of step S1; check whether the total thickness, connection strength, installation space and other structural boundaries of the multilayer perforated plate meet the target range of step S1. If it meets the target range, proceed to step S13; if it does not meet the target range, optimize the following parameters: ① If the strain or fatigue does not meet the target range, reduce the single design displacement and increase the value of the perforated plate. ,improve Reduce if necessary or ②Constructing constraints that exceed limits: Prioritize reducing them. Optimize assembly (maintain) (If it still meets the standard), then bring the optimized parameters into step S3.

[0015] Preferably, the specific method for step S13 is as follows: steps S6, S8, S10, and S12 must all be completed in one go or the initial stiffness in two adjacent iterations must be determined. Yield strength Equivalent damping ratio The result is considered convergent if the change in the quantity satisfies one of the following conditions: , ,

[0016] If the changes of the three factors in two consecutive iterations are all below the above limits, it is determined that the changes are "stabilizing" and the optimization calculation ends.

[0017] The advantages of this invention are: The structural calculation and optimization design method proposed in this invention establishes the geometric parameters (pore diameter) of multi-layer perforated plates. Pitch ,thickness Number of floors ) and mechanical properties (initial stiffness) Slip force Equivalent damping ratio The mapping relationship between porosity and porosity was proposed, and a method based on porosity was developed. With equivalent shear modulus The computational model clearly reveals the coupled effects of perforation geometry, interlayer adhesive thickness, and friction parameters on overall stiffness and energy dissipation performance. Through optimization... , Number of floors , film thickness Assembly required The iterative process enables a quantitative design approach that derives structural parameters from target performance (stiffness, yield strength, damping ratio). This invention not only achieves calculable matching of parameters under different working conditions but also ensures multi-objective optimization and repeatability of structural design, solving the problems of traditional damper design relying on experience and the inability to precisely control parameter coupling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the multi-layer perforated plate vibration dual-control damper according to the first embodiment of the present invention; Figure 2 This is an exploded view of the multi-layer perforated plate vibration dual-control damper according to the first embodiment of the present invention; Figure 3 This is a dimensioned diagram of the multi-layer perforated plate vibration dual-control damper according to the first embodiment of the present invention. Figure 4 This is a flowchart of the structural calculation of the multi-layer perforated plate vibration dual-control damper according to the first embodiment of the present invention; Numbering on the map: 1. Dual-control energy-consuming component; 11. Central energy-consuming body; 12. Central fixed core; 13. Upper fixed friction plate; 14. Lower fixed friction plate; 2. Bearing assembly; 21. Upper bearing assembly; 211. Upper bearing plate; 212. Upper bolt; 213. Upper nut; 214. Upper fixing bolt; 215. Upper fixing nut; 22. Lower bearing assembly; 221. Lower bearing plate; 222. Lower bolt; 223. Lower nut; 224. Lower fixing bolt; 225. Lower fixing nut; 3. Limiting assembly; 31. Limiting plate; 32. Bolts on the upper limiting plate; 33. Bolts on the lower limiting plate; 4. Protective cover. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Combination Figures 1-4As shown, the multi-layer perforated plate vibration dual-control damper includes a dual-control energy dissipation component 1, a load-bearing component 2, a limiting component 3, and a protective cover 4. The dual-control energy dissipation component 1 includes a central energy dissipation body 11, a central fixed core 12, an upper fixed friction plate 13, and a lower fixed friction plate 14, used to achieve dual vibration control. The load-bearing component 2 is located on the upper and lower surfaces of the dual-control energy dissipation component 1, used to withstand vibrations in the upper part of the structure and provide stable foundation support. The limiting component 2 is used to fix the load-bearing component 2 and the dual-control energy dissipation component 1, and to limit excessive deformation of the device. The protective cover 4 is used to protect the dual-control energy dissipation component 1.

[0021] Specifically, according to Figures 1-2As shown, in this embodiment, the dual-control energy dissipation component 1 serves as the core energy dissipation unit of the damper in this application. It includes a central energy dissipation body 11, a central fixed core 12, an upper fixed friction plate 13, and a lower fixed friction plate 14. The central energy dissipation body 11 is composed of multiple layers of square thin plates with through holes stacked together. These thin plates have a certain thickness (each layer's thickness can range from 1mm to 5mm), and multiple continuous through holes parallel to the front-back or left-right directions are opened in the thin plates. A hole matching the central fixed core 12 is opened in the middle of the thin plates. The material of each layer is either a metal material (such as high-strength aluminum alloy or stainless steel) or a composite material (such as multi-directionally laid carbon fiber plate). The layers are bonded together using a specific process and separated by a thin (typically 0.1–0.5 mm) polymer film layer with viscoelastic properties (this embodiment uses a polymer film, but the adhesive used in this invention is not limited to polymer films) to control interfacial slippage. (The specific bonding process here refers to uniformly coating a layer of adhesive such as epoxy or polyurethane glue onto the surface of the layer, then applying the polymer film and stacking the next layer, and so on, assembling layer by layer). The main functions of the polymer film layer are: ① Bonding and fixing: acting as an adhesive during manufacturing and assembly to bond the multilayer boards into a whole, ensuring that the layers do not loosen under small amplitude vibrations; ② Allowing slippage: under large shear forces, the polymer film layer will undergo shear deformation and localized stick-slip, causing relative displacement between the layers, thereby triggering friction and viscous energy dissipation mechanisms; ③ Limiting and buffering: controlling the maximum amount of slippage between layers, avoiding direct contact and wear of bare metal surfaces, and providing a certain restoring force so that the layers can partially return to their original position after slippage. The polymer film layer acts as an "invisible" energy-dissipating unit in the structure. Normally, the layers remain bonded, and during vibrations, it absorbs energy through internal deformation and viscous damping (the bonding method described in this embodiment is one way to connect multiple perforated composite panels, but it is not limited to this). The thickness of the central energy-dissipating body 11 is formed by the accumulation of layers. In this embodiment, the layers are stacked in a parallel, overlapping manner, and the perforations between the layers are staggered. That is, the holes between adjacent layers are not completely symmetrical, but rather staggered. The central fixing core 12 is a columnar component that can penetrate the pre-drilled holes in the central energy-dissipating body 11 and connect to the openings in the middle of the upper and lower fixing friction plates to restrict the movement of the central fixing core 12. The central fixing core 12 penetrates the central energy-dissipating body 11 to restrict the overall small displacement of the central energy-dissipating body 11, and simultaneously, under the shear tension of the central energy-dissipating body 11, it causes the building to automatically return to its original position. The upper fixed friction plate 13 and the lower fixed friction plate 14 are thin plate-shaped components with the same shape and size. The length and width of the upper fixed friction plate 13 and the lower fixed friction plate 14 are slightly larger than the length and width of the middle energy dissipation body 11, so that the friction plates can completely cover the middle energy dissipation body 11.The upper fixed friction plate 13 is tightly attached to the upper wall of the middle energy dissipator 11, located between the upper bearing plate 211 and the middle energy dissipator 11. The lower fixed friction plate 14 is tightly attached to the lower wall of the middle energy dissipator 11, located between the lower bearing plate 221 and the middle energy dissipator 11. The upper and lower fixed friction plates have pre-set holes in their middle sections that match the middle fixed core 12 to limit the displacement of the middle fixed core 12. The upper and lower fixed friction plates mainly function as clamping, force transmission, and friction energy dissipation. They tightly bind and fix the multi-layer perforated plate, causing the ends of each layer to be clamped together under pressure. Simultaneously, they are connected to the upper and lower bearing plates by high-strength bolts. The upper and lower fixed friction plates evenly distribute the reciprocating shear force transmitted from the upper part to each layer of energy dissipator, avoiding uneven stress on a single layer. Furthermore, the fixed friction plates themselves have sufficient rigidity to ensure that the ends of the multi-layer perforated plate do not locally bend or detach under cyclic loads.

[0022] The central energy-dissipating body 11 is composed of multi-layer perforated plates. The rational layout of multiple holes ensures a uniform distribution of the yield zone of the plates. Under repeated stress, it can dissipate a large amount of seismic input energy through repeated buckling-plastic deformation. While perforated plates may experience crack initiation and propagation under ultimate stress, the porous structure effectively restrains crack paths, allowing cracks to propagate around the holes, which is beneficial for absorbing impact loads. The multi-layer plate structure makes it difficult for microcracks on a single layer to penetrate the entire energy-dissipating body. Cracks are hindered or redirected at interlayer interfaces, extending the failure path and further absorbing energy while preventing overall brittle fracture. The staggered arrangement of adjacent perforated plates causes asynchronous slip between layers, resulting in smoother hysteresis and a larger area of ​​slip. During shear deformation, micro-slippage and friction occur between the layers and between the layers and the sealing / limiting membrane layers in multilayer laminated structures. Interlayer friction provides additional damping energy dissipation: at small deformations, the interlayer bonding results in high overall stiffness; when the load increases beyond the interfacial friction, relative slippage between the layers begins, initiating frictional energy dissipation and acting as a "second line of defense." This multi-interfacial friction mechanism enables the damper to effectively dissipate energy under different vibration amplitudes, forming a graded energy dissipation mode. like Figure 2As shown, the bearing assembly 2 includes an upper bearing assembly 21 and a lower bearing assembly 22; the upper bearing assembly 21 includes an upper bearing plate 211, an upper bolt 212, an upper nut 213, an upper fixing bolt 214, and an upper fixing nut 215; the lower bearing assembly 22 includes a lower bearing plate 221, a lower bolt 222, a lower nut 223, a lower fixing bolt 224, and a lower fixing nut 225; the upper bearing plate 211 and the lower bearing plate 221 are two rectangular plate-shaped components of the same size and a certain thickness, whose length and width are both greater than the fixed friction plate. The upper bearing plate 211 is located above the middle energy dissipation body 11, and the lower bearing plate 221 is located below the middle energy dissipation body 11. The two are arranged symmetrically, and each has bolt holes on its four sides. Upper bolts 212 are arranged at the four corners of the upper wall of the upper bearing plate 211, with at least one bolt at each corner. Each upper bolt 212 passes through the upper bearing plate 211 and engages with an upper nut 213 located on the lower wall of the upper bearing plate 211, fixing it at the four corners of the upper bearing plate 211. Lower bolts 222 are arranged at the four corners of the lower wall of the lower bearing plate 221, with at least one bolt at each corner. Each lower bolt 222 passes through the lower bearing plate 221 and engages with a lower nut 223 located on the upper wall of the lower bearing plate 221, fixing it at the four corners of the lower bearing plate 221, serving as a basic support component. Upper fixing bolts 214 pass through the upper bearing plate 211 and the upper fixing friction plate 13 sequentially from top to bottom, engaging with an upper fixing nut 215 to fix the upper bearing plate 211 and the upper fixing friction plate 13. The lower fixing bolt 224 passes through the lower bearing plate 221 and the lower fixing friction plate 14 from bottom to top, and cooperates with the lower fixing nut 225 to fix the lower bearing plate 221 and the lower fixing friction plate 14. The upper bearing assembly 21 is mainly used to connect and anchor the damper to the superstructure and transfer the vibration load from the upper part to the damper; the lower bearing assembly is mainly used to connect the lower structure, provide support for the entire damper, bear the vibration from the upper part, and effectively disperse stress. The bearing assembly 2 adopts bolt connection, which can be quickly installed and disassembled, facilitating on-site equipment, daily maintenance, and post-earthquake maintenance.

[0023] like Figure 2As shown, the limiting component 3 includes a limiting plate 31, upper limiting plate bolts 32, and lower limiting plate bolts 33. The limiting plate 31 is a plate-shaped component with a length greater than the central energy-consuming body 11, and is tapered inward in an arc shape in the middle, forming a waisted shape that is wider at the top and bottom and narrower in the middle. Bolt holes are pre-drilled at both the top and bottom. The limiting plate 31 is made of spring steel or elastic alloy. The bolt holes on the upper side of the limiting plate 31 are oblong, while the bolt holes on the lower side of the limiting plate 31 are circular. The upper limiting plate bolts 32 pass through the bolt holes in the limiting plate and the pre-drilled bolt holes in the upper bearing plate 211, and the lower limiting plate bolts 33 pass through the bolt holes in the limiting plate and the pre-drilled bolt holes in the lower bearing plate 221. Together, they fix the limiting plate 31 to the four sides of the upper and lower bearing plates. The limiting component 3 is used to fix the upper load-bearing component 21, the dual-control energy dissipation component 1, and the lower load-bearing component 22 into a whole, forming a continuous force-bearing system and avoiding the risk of local instability or separation of the vibration dual-control damper under large displacement. The upper part of the limiting plate 31 is designed with an elongated hole, allowing for a certain amount of small displacement and relative slippage under earthquake or wind-induced vibration, preventing premature stress concentration due to rigid constraints. The lower part of the limiting plate 31 is a circular hole, forming a rigid limit. When the displacement exceeds the design value, it acts as a forced constraint, ensuring that the damper does not undergo uncontrolled deformation. The arc-shaped surface cut off in the middle forms a local weakening zone. When the limiting plate 31 is subjected to alternating tension and compression, the arc-shaped area first undergoes yielding or local plastic deformation, thereby dissipating energy. This plate, together with the dual-control energy dissipation component 1, forms a multi-stage energy dissipation mechanism, improving the overall energy dissipation capacity of the damper. Especially under multiple cyclic loading, it can effectively disperse stress and prevent premature failure of a single component.

[0024] like Figure 2 As shown, in this embodiment, the protective cover 4 is a square hollow cylindrical component with a length and width slightly larger than the fixed friction plate and a height slightly larger than the central energy dissipation body 11. The protective cover 4 completely covers the entire damper cylinder structure area, including the upper and lower fixed friction plates, the bolt connection area, and the central energy dissipation body 11. From the outside to the inside, the protective cover 4 consists of: an outer flame-retardant and heat-insulating layer made of high-performance composite materials (such as fluorosilicone rubber coated with fiberglass fabric), which has high temperature resistance, flame retardancy, and UV protection capabilities; a central heat insulation layer made of polyurethane foam, aerogel, or closed-cell foam material, which effectively isolates the influence of external temperature fluctuations on the performance of the rubber core; an inner reinforced bonding layer bonded to the outer wall of the metal cylinder or the square reinforced shell with high-elasticity sealant or structural adhesive to ensure long-term service stability; and an auxiliary wear-resistant inner lining layer (optional): if used in dusty or frequently vibrating environments, an additional wear-resistant polymer lining can be added to improve service life. The overall cover is made by flexible molding or multi-piece splicing, which facilitates post-vibration inspection or replacement of the internal core unit and is conducive to on-site installation and subsequent maintenance.

[0025] The specific strength requirements of a multi-layer perforated plate vibration-controlled damper can be adjusted according to structural parameters such as the stacking method and perforation pattern of the multi-layer perforated plates within the damper, ensuring effective energy absorption during an earthquake. The specific design process is as follows: (I) Calculation of stress on a single-layer plate The central energy dissipation body is the core component of the multi-layer perforated plate vibration dual-control damper. Its stress is complex and difficult to analyze. To facilitate the analysis, the stress of a single-layer plate is calculated first.

[0026] ① Effective shear modulus (single-layer plate) To reflect the stiffness reduction effect of perforated structures in the shear direction at the macroscopic level, this invention introduces the concept of "effective shear modulus." This parameter is calculated using a unit homogenization method, equating the influence of porosity, hole edge shape, and arrangement on overall stiffness as material parameter corrections. This allows for accurate characterization of the macroscopic shear stiffness and yield characteristics of the perforated plate without explicitly modeling the holes. This parameter provides a unified basis for subsequent nominal yield force, interlaminar stiffness distribution, and energy dissipation analysis, and is a key intermediate quantity for establishing an equivalent mechanical model of the damper. For perforated plates with periodic circular holes, porosity can be used... The closed approximation of the effective shear modulus :

[0027] in , representing the correction coefficient for influencing factors such as hole edge shape and edge distance effect, is generally taken as . . This indicates the shear modulus of the unperforated plate; when using oblique staggered or double helix, the ligament ("ligament" refers to the minimum clear distance (net cross-sectional width) between two adjacent holes, ligament width ( (This directly determines the structure's load-bearing and force-transfer capabilities.) The angle between the principal load-bearing direction and the shear direction is... . ( ) represents planar porosity, ( Indicates aperture; Indicates the distance between adjacent holes; This represents the ratio of the perforation area to the unit area on the plane of the perforated plate, reflecting the degree of weakening of the plate surface. This parameter is used to correct the effective load-bearing area and nominal yield force calculation of the perforated plate. Since the weakening effect of perforation mainly acts on the planar load-bearing surface of the plate, the porosity is calculated based on the planar projected area, rather than the side area of ​​the plate. To better represent the angle between the perforation direction and the principal shear direction... The effect on the effective shear modulus is addressed by introducing a correction function here. To correct ( , It is an empirical constant. ):

[0028] when hour, When the hole arrangement is aligned with the shear direction, the stiffness is at its maximum. The value will change with As it increases, it decreases, when When the angle of the hole arrangement is increased to the recommended range of 30°-60°, the stiffness decreases by approximately 10%–30%, while the toughness and energy dissipation performance are significantly improved. Therefore, in the layered perforated plate of the present invention, it is preferable to control the angle of the hole arrangement at 30°-60° to balance stiffness, energy dissipation, and damage tolerance.

[0029] ② Effective yield shear force (single-layer plate) Since the voids cause stress concentration, a nominal yield shear stress reduction factor is defined. Let the effective yield shear force be The shear stress of the unperforated plate is , ,

[0030] When the cracks are obliquely misaligned, the concentration effect is reduced due to crack deflection, so it can be multiplied by the toughening factor. :

[0031] In the formula It represents the pore morphology sensitivity coefficient, which characterizes the sensitivity of pore shape, arrangement, etc. to the weakening of yield strength; The toughening effect coefficient is used to characterize the orientation of pores (i.e., different orientations). The influence of the value on the effective yield stress; the above It is recommended to cut through 3-5 sets of single-layer boards (different...) One-time calibration, then applied subsequently.

[0032] (II) Calculation of stress on laminated slabs ① Initial stiffness of laminated plates

[0033] The laminated plates are connected in series along the thickness direction and in parallel in the plane. Let the effective shear area of ​​each layer be... ,thickness shear modulus (Metal layer taken) Adhesive layer material Let the overall initial stiffness of the multi-layer perforated plate after stacking be... The calculation formula is:

[0034] Each layer has the same geometry and the same hole pattern (i.e.) The above equation can be transformed into

[0035] In the formula Indicates the thickness of a single layer: A Indicates the effective shear dimension (projected area) in the plane; n represents the number of layers: Indicates the thickness of the interlayer polymer film; This indicates the shear modulus of the polymer film.

[0036] ②Interlayer frictional sliding threshold of laminated plates

[0037] It has Each interlayer interface participates in frictional slippage, with an effective normal force per unit interface. (Determined by bolt preload and pressure plate area), coefficient of friction If the adhesive material (such as a polymer film) yields first, its yield shear stress is denoted as... ,but:

[0038] For a single interface under pressure, the interlayer frictional sliding threshold of the laminate can be adjusted by changing the preload. The target range is defined for graded control of "when to enter the energy consumption stage".

[0039] ③ Nominal yield strength of ligaments

[0040] Since it is difficult to directly define the "engineerably operable yield limit" given by the true yield point for comparative calculations, the concept of nominal yield force is proposed here. That is, from this nominal yield force level, the damper can be considered to have entered an effective energy-dissipating working state. The multi-layer perforated plate vibration-controlled damper of this application exhibits two situations under stress: "slip-before-yield" (where the perforated plate slides first and then yields), and "yield before sliding" (where yielding occurs before sliding). Under certain extreme parameter configurations (such as excessively small slip gaps or excessively large weakened zones), the phenomenon of "yield before sliding" may occur, meaning that the ligaments yield before the interlayer slippage begins. This invention optimizes the slip gap, the constraint of the limiting plate, and the size of the weakened zone to ensure the slippage initiation force. Below yield strength This ensures a stable, phased energy dissipation mode of "slip-before-yield," preventing abrupt performance changes or premature yielding failure. To meet the design objectives, the following conditions must be satisfied: Let the sliding starting force be:

[0041] Let the yield force be:

[0042] like If the material yields before slippage is achieved, it is called "pre-slip" and this is a situation that needs to be avoided. like Therefore, it first slides and then bends (which is the design goal of this patent).

[0043] If the ligament "slides first and then flexes", then the nominal yield strength of the ligament is only used for verification and is not used as the first threshold (i.e., the limit value).

[0044] when At this time, interlaminar slip first occurs in multilayer boards, consuming energy; when the relative displacement... (This represents the relative displacement between the two ends of the damper in the shear direction) As the displacement continues to increase and the interlaminar slip reaches its limit, the single-layer ligament enters the continuous yielding stage and continues to consume energy.

[0045] (III) Calculation of equivalent damping ratio The equivalent damping ratio is an important indicator for measuring the energy dissipation performance of a damper. To express the equivalent damping ratio, it is necessary to first calculate the force-displacement skeleton and hysteretic energy dissipation value of the multi-layer perforated plate:

[0046] Residual stiffness is primarily provided by the bonding material (e.g., polymer film) and the unslipped interface, empirically determined by... ( ); set up This represents the displacement response, i.e., the relative displacement. This indicates the "starting displacement" or "limit displacement" of the slip phase; when At this point, the structure is in the elastic stage, the force-displacement relationship is linear, and the slope is... ; when At this point, the structure enters the post-yield stage, and the damper provides a constant yield force. Simultaneously superimposed secondary stiffness This demonstrates the ability to dissipate energy through hysteresis.

[0047] To demonstrate the energy dissipation capability of the damper during a complete reciprocating loading cycle, a single symmetrical cycle energy dissipation is introduced here. Through calculation This allows for the quantification of the energy dissipation efficiency of the device, providing a basis for determining the equivalent damping ratio and calibrating model parameters. The present invention utilizes a two-stage energy dissipation mechanism of slippage and ligament yielding to achieve... This significantly improves the structure's seismic resistance and energy dissipation capacity.

[0048] Energy consumption of a single symmetrical cycle (displacement amplitude) ):

[0049] in This refers to the additional energy dissipation after the ligament enters the plastic stage (when the ligament material enters the yielding or even plastic stage, its stress-strain curve exhibits hysteresis loops, generating additional energy dissipation. This energy is different from the elastic energy stored in the overall structure; it is an "extra contribution," which only occurs when...). The magnitude of the earthquake is only significant if the magnitude is large enough. If the earthquake is small, the ligaments remain in their elastic working zone, and the additional energy dissipation is negligible. Its expression is:

[0050] The empirical coefficient is (0.6-1.0). The average plastic shear strain amplitude within the layer (this can be determined based on...) (Approximately obtained).

[0051] Therefore, the equivalent damping ratio can be expressed as (using displacement amplitude) (calibration)

[0052] If only a quick assessment of the energy consumption of interface sliding is required, this can be ignored. Then the equivalent damping ratio can be simplified to:

[0053]

[0054] Based on the above calculation results, optimization directions can be given for the middle energy-dissipating body of the damper in this application: ① Perforated plate Changing the angle can correspondingly increase crack deflection, and thus the effective yield shear force. Increased, while also increasing energy consumption. Increase; ② Interlayer frictional sliding threshold Down, Follow Changes, therefore, can be made in the design In conjunction with prestressing, the displacement layer that "enters yielding" is refined to the target layer (no slippage in minor earthquakes / slippage in moderate earthquakes / plasticization in major earthquakes).

[0055] (iv) Application of structural optimization formulas Assuming the objective is to achieve a given design displacement The equivalent damping to reach the target and limit the initial stiffness Threshold of interlayer friction sliding Within the scope.

[0056] A. Horizontal staggered arrangement ( ) 1. Select initial porosity (selectable) ), Substitute

[0057] 2. By

[0058] Obtain the initial stiffness

[0059] 3. Select the bolt preload (or preload or contact area) and determine... Thus, the displacement can be calculated.

[0060] 4. According to If the target equivalent damping value is not reached after formula verification, then increase the damping value. (Increase preload or contact area and preload) or increase Increase the hysteresis area by increasing the aperture or decreasing the aperture spacing; if the target damping value is exceeded, adjust in the opposite direction.

[0061] B. Diagonal staggered arrangement ( ) Based on A,

[0062]

[0063] Adjust Fine-tunable and The balance, that is When the value is increased, the stiffness of the perforated plate decreases slightly, while its toughness and energy consumption increase. When the value is reduced, the stiffness of the perforated plate increases slightly, and the corresponding displacement decreases.

[0064] C. Design recommendations for each indicator 1. Glide first, then bend: It is recommended to design it as follows Right now It can ensure that sliding friction occurs between the layers of the multi-layer perforated plate first, avoiding premature yielding of the metal / composite layer.

[0065] 2. Local bending: Ensure the ligament's slenderness ratio is correct. But it's not big. Based on experience... This can prevent elastic local buckling from becoming dominant; if the buckling is larger, local stability can be improved by rounding / thickening the edge of the hole.

[0066] 3. Membrane shear strength: It must not be less than the average interfacial shear amplitude in the design cycle to avoid premature shear failure of the membrane.

[0067] 4. Fatigue: S-N check (a fatigue life verification method for structural seismic resistance, dampers, and metal energy dissipation devices) is performed based on hysteretic energy density and cycle number; ligament equivalent effect amplitude can be used. Evaluate.

[0068] D. Replacement rules for composite material layers If the laminate is a fiber composite material, , (According to the mechanics of composite materials, let the direction along the fiber (or the main reinforcing direction) be axis 1, the direction in the plane perpendicular to the fiber be axis 2, and the direction perpendicular to the layer (thickness direction) be axis 3. Therefore, we use axis 3 here.) replace The shear modulus of a composite material layer is expressed by... replace (This represents the shear stress of the composite layer, taking into account the layup angle). The influence of in-plane shear stiffness (classical laminate theory).

[0069]

[0070] Then multiply by the porosity correction in this paper and oblique factor In the formula This indicates the in-plane tensile and compressive stiffness of the material in direction 1; This indicates the in-plane tensile and compressive stiffness of the material in two directions.

[0071]

[0072] This represents the elastic modulus of the material in the first principal direction. Indicates the elastic modulus of the material in the second principal direction. Example 2: Figure 4 This is a flowchart illustrating the application of a multi-layer perforated plate vibration dual-control damper structure design method according to the second embodiment of the present invention.

[0073] This invention provides a structural design method for a multi-layer perforated plate vibration-controlled damper, comprising: S1. Initial Parameter Input and Target Determination: S1a. Determine Initial Parameters: Determine The initial value range of parameters; S1b, determine the hole type: determine whether to stagger or obliquely stagger; S1c, determine the expected targets: ① target stiffness range during small vibration stage; ② target yield range for vibration-controlled triggering; ③ target energy dissipation or equivalent damping ratio; ④ fatigue and strain limits, total thickness and structural boundaries. The specific process of step S1 is as follows: Based on actual needs, ① determine the expected targets that the designed damper needs to meet: target stiffness range during small vibration stage. 1. The target yield range for seismic control triggering; target energy dissipation and equivalent damping ratio, fatigue and strain limits, total thickness, and structural boundaries; the specific value of the target range depends on the actual engineering needs. 2. Determine the perforation type of the multi-layer perforated plate; 3. Define the manufacturing process for the multi-layer perforated plate vibration-controlled damper. The parameters here are determined based on engineering experience.

[0074] S2. Design Variable Input: Initially select variables or adjust variable data values ​​as needed: The specific process of step S2 is as follows: Preliminarily determine the main variables of the multi-layer perforated plate. The values ​​and related parameters are determined mainly based on engineering experience.

[0075] S3. Preliminary Calculation: ① Calculate porosity ② Calculate the effective shear modulus The specific process of step S3 is as follows: using the formula Calculate porosity using the formula and formula Calculate the effective shear modulus.

[0076] S4, Judgment Is it greater than 0.4? If so, proceed to step S5; otherwise, return to step S2 to readjust the variables. The specific process of step S4 is: determine the porosity calculated in step S3. The reasonableness of the effective shear modulus is checked. If it is not satisfied, return to step S2 to readjust the parameters. If it is satisfied, proceed to step S5.

[0077] S5, Target 1 Verification: Stiffness during minor vibration stage Calculation and verification: The specific process of step S5 is as follows: using the formula Calculate the stiffness during the small vibration stage.

[0078] S6, Judgment: Is it within the target range? If it is within the target range, proceed to step S7; if it is not within the target range, perform parameter optimization. The specific process of step S6 is as follows: based on the stiffness calculated in step S5... Determine whether the value is within the target range in step S1. If it is, proceed to step S7; otherwise, perform the following parameter optimizations: ① Less than the target range: reduce , reduce or ,improve ;② Larger than target range: Increase Appropriately increase Then, substitute the optimized parameters into step 3 and recalculate.

[0079] S7, Target 2 Verification: Vibration Control Trigger Threshold Calculation. The specific process of step S7 is as follows: First, use the formula... and , Calculate the effective yield shear force Then use the formula Calculate the required interlayer frictional sliding threshold for the target layer.

[0080] S8, Judgment: If the target range is met, proceed to step S9; otherwise, perform parameter optimization. Step S8 involves calculating the interlayer friction sliding threshold of the laminated plate based on the value obtained in step S7. Determine whether the value is within the target range in step S1. If it is, proceed to step S9; otherwise, perform the following parameter optimizations: ① Smaller than target range: Increase or Choose the higher membrane material or thickening Increase appropriately when necessary ;② Larger than target range: Reduce or reduce Then, the optimized data is brought into step S7 for recalculation.

[0081] S9. Target 3 Verification: Energy and Equivalent Damping Ratio Assessment: Obtained from step S7 , Calculate the hysteresis area using idealized bilinearity. With equivalent damping ratio The specific process of step S9 is as follows: Using formula , , , and formulas Calculate the energy consumption of symmetric cycles Then use the formula and formula Calculate the equivalent damping ratio.

[0082] S10. Determination: Is the energy consumption target lower than the target range? If not, proceed to step S11; if lower, perform parameter optimization. The specific process of step S10 is as follows: Based on the maximum displacement or equivalent damping ratio calculated in step S9, determine if the value is lower than the target range of step S1. If not, proceed to step S11; if lower, perform the following parameter optimization: Increase... or increase Add layers Increase Or moderately reduce Increase if necessary or To widen the hysteresis loop, the optimized parameters are then incorporated into step 3 for recalculation.

[0083] S11, Target 4 Verification: S11a, Strain and Fatigue Verification: Calculate the shear strain of the key layer and the fatigue criterion under the number of cycles; S11b, Structural Constraint Verification: Verify the structural boundaries such as total thickness, connection strength, and installation space. The specific process of step S11 is as follows: Calculate the shear strain of the key layer and the fatigue criterion under the number of cycles, and analyze the rationality of the structural boundaries such as the total thickness, connection strength, and installation space of the multilayer plate.

[0084] S12. Determination: Whether the strain, fatigue, and structural constraints are satisfied; if satisfied, proceed to step S13; if not satisfied, perform parameter optimization. The specific process of step S12 is as follows: Based on the critical layer shear strain and fatigue criterion under the cycle number calculated in step S11, determine whether the value meets the target range of step S1; check whether the total thickness, connection strength, installation space, and other structural boundaries of the multi-layer perforated plate meet the target range of step S1. If satisfied, proceed to step S13; if not satisfied, perform the following parameter optimization: ① If the strain or fatigue is not satisfied, reduce the single design displacement and increase the... ,improve Reduce if necessary or ②Constructing constraints that exceed limits: Prioritize reducing them. Optimize assembly (maintain) (If it still meets the standard), then bring the optimized parameters into step S3.

[0085] S13. Convergence Criterion: All criteria pass on the first attempt; or convergence occurs in two adjacent iterations. , The difference in the amount of change is less than 5%. The difference in the amount of change is less than 2%. The specific process of step S13 is as follows: Steps S6, S8, S10, and S12 must all be completed at once, or the initial stiffness in two adjacent iterations must be... Yield strength Equivalent damping ratio The result is considered convergent if the change in the quantity satisfies one of the following conditions: , ,

[0086] If the changes of the three factors in two consecutive iterations are all below the above limits, it is determined that the changes are "stabilizing" and the optimization calculation ends.

[0087] S14. Engineering Standardization: Standardized hole type; , Number of floors , film thickness Material grade (given) Assembly required Number of contact surfaces With contact area The parameters are as follows. The specific process of step S14 is to organize the damper parameters that have passed the convergence criterion.

[0088] S15. Field Verification: Establish bench tests for small vibration shear stiffness, slip / yield triggering, hysteresis energy, and low-cycle fatigue; conduct field measurements. , The specific process of step S15 is as follows: using the already determined hole type, , Number of floors , film thickness Material grade (given) Assembly required Number of contact surfaces With contact area The parameters were compiled, and bench tests were conducted on small vibration shear stiffness, slip / yield triggering, hysteresis energy, and low-cycle fatigue. Actual measurements were then performed. , To further verify the calculation results.

[0089] S16. Output Results: ① Output the finalized parameter table; ② Output the verification report. The specific process of step S16 is as follows: tabulate the finalized parameters and output the verification report.

[0090] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Terms such as "upper," "lower," "left," "right," "front," and "rear" used in the invention are merely for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0091] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A structural design method for a multi-layer perforated plate vibration dual-control damper, characterized in that, The multi-layer perforated plate vibration dual-control damper includes a dual-control energy dissipation component, a load-bearing component, a limiting component, and a protective cover. The load-bearing component includes an upper load-bearing plate and a lower load-bearing plate. The dual-control energy dissipation component includes a central energy dissipation body, a central fixed core, and a fixed friction plate, located between the upper and lower load-bearing plates. The limiting component includes a limiting plate fixed to the outer side of the load-bearing component, fixing the load-bearing component and the dual-control energy dissipation component. The protective cover is located outside the dual-control energy dissipation component and positioned in the middle of the load-bearing component. The structural design method of the multi-layer perforated plate vibration dual-control damper includes the following steps: S1. Initial Parameter Input and Target Determination: S1a. Determine Initial Parameters: Determine Initial value range of parameters; S1b, Determine the hole type: determine the forward staggered or oblique staggered arrangement; S1c, Determine the expected targets: ① Target stiffness range during small vibration stage; ② Target yield range for vibration-controlled triggering; ③ Target energy dissipation or equivalent damping ratio; ④ Fatigue and strain limits, total thickness and structural boundaries; S2. Design Variable Input: Initially select variables or adjust variable data values ​​as needed: ; S3. Preliminary Calculation: ① Calculate porosity ② Calculate the effective shear modulus ; S4, Judgment Is it greater than 0.4? If so, proceed to step S5; otherwise, return to step S2 to readjust the variable. S5, Target 1 Verification: Stiffness during minor vibration stage Calculation and verification; S6, Judgment: Is it within the target range? If it is within the target range, proceed to step S7; if it is not within the target range, perform parameter optimization. If it's too small, then decrease it. , reduce or ,improve ;like If it's too large, then increase it. Appropriately increase Then, substitute the optimized parameters into step 3 and recalculate; S7, Target 2 Verification: Vibration Control Trigger Threshold Calculate, and obtain ; S8, Judgment: If the condition is within the target range, proceed to step S9; otherwise, optimize the parameters. Too small: Increase or Choose the higher Membrane material or thickening Increase appropriately when necessary ;if Too large: reduce or reduce Then, the optimized data is brought into step S7 for recalculation; S9. Target 3 Verification: Energy and Equivalent Damping Ratio Assessment: Obtained from steps S5 and S7. , Calculate the hysteresis area using idealized bilinearity. With equivalent damping ratio ; S10. Determine: Is the energy consumption target lower than the target range? If not, proceed to step S11; if lower than the target range, optimize the parameters: increase... or increase Add layers Increase Or moderately reduce Increase if necessary or To widen the lap, the optimized parameters are then substituted into step 3 for recalculation; S11, Target 4 Verification: S11a, Strain / Fatigue Verification: Calculate the shear strain of the key layer and the fatigue criterion under the number of cycles; S11b, Structural Constraint Verification: Verify the total thickness, connection strength and structural boundary of the installation space; S12. Determination: Does the strain / fatigue condition meet the structural constraints? If it does, proceed to step S13; otherwise, perform parameter optimization: if the strain or fatigue condition does not meet the requirements, reduce the single design displacement and increase the... ,improve Reduce if necessary or If the construction constraints exceed the limit: prioritize reducing them. Optimize the assembly; then incorporate the optimized parameters into step S3; S13. Convergence Criterion: All criteria pass on the first attempt; or convergence occurs in two adjacent iterations. , The difference in the amount of change is less than 5%. The difference in the amount of change is less than 2%; S14. Engineering Standardization: Standardized hole type; , Number of floors , film thickness , give the contents Material grade, assembly requirements Number of contact surfaces With contact area parameter; S15. Field Verification: Establish bench tests for small vibration shear stiffness, slip, yield triggering, hysteresis energy, and low-cycle fatigue; conduct field measurements. , ; S16. Output results: ① Output the finalization parameter table; ② Output the verification report.

2. The design method for a multi-layer perforated plate vibration dual-control damper structure according to claim 1, characterized in that, The specific method for step S1 is as follows: ① Determine the expected target that the designed damper needs to meet: the target stiffness range during the small vibration stage.

1. The target yield range for seismic control triggering; target energy dissipation and equivalent damping ratio, fatigue and strain limits, total thickness, and structural boundaries; the specific value of the target range depends on the actual engineering needs.

2. Determine the perforation type of the multi-layer perforated plate; 3. Define the manufacturing process for the multi-layer perforated plate vibration-controlled damper. The parameters here are determined based on engineering experience.

3. The design method for a multi-layer perforated plate vibration dual-control damper structure according to claim 1, characterized in that, The specific method for step S3 is as follows: using the formula Calculate porosity using the formula and formula Calculate the effective shear modulus.

4. The structural design method for a multi-layer perforated plate vibration dual-control damper according to claim 1, characterized in that, The specific method for step S5 is as follows: using the formula Calculate the stiffness during the small vibration stage The value.

5. The structural design method for a multi-layer perforated plate vibration dual-control damper according to claim 1, characterized in that, The specific method for step S6 is as follows: based on the stiffness calculated in step S5... Determine whether the value is within the target range in step S1. If it is, proceed to step S7; otherwise, perform the following parameter optimizations: ① Less than the target range: reduce , reduce or ,improve ;② Larger than target range: Increase Appropriately increase Then, substitute the optimized parameters into step 3 and recalculate.

6. The structural design method for a multi-layer perforated plate vibration dual-control damper according to claim 1, characterized in that, The specific method for step S7 is as follows: Using formula and , Calculate the effective yield shear force Then use the formula Calculate the required interlayer frictional sliding threshold for the target layer. .

7. The design method for a multi-layer perforated plate vibration dual-control damper structure according to claim 1, characterized in that, The specific method for step S8 is as follows: based on the interlayer friction sliding threshold of the laminate calculated in step S7... Determine whether the value is within the target range in step S1. If it is, proceed to step S9; otherwise, perform the following parameter optimizations: ① Smaller than target range: Increase or Choose the higher membrane material or thickening Increase appropriately when necessary ;② Larger than target range: Reduce or reduce Then, the optimized data is brought into step S7 for recalculation.

8. The structural design method for a multi-layer perforated plate vibration dual-control damper according to claim 1, characterized in that, The specific method for step S9 is as follows: Using formula , , , and formulas Calculate the energy consumption of symmetric cycles Then use the formula and formula Calculate the equivalent damping ratio.

9. The structural design method for a multi-layer perforated plate vibration dual-control damper according to claim 1, characterized in that, The specific method for step S12 is as follows: Based on the critical layer shear strain and fatigue criterion calculated in step S11, determine whether the value meets the target range of step S1; check whether the total thickness, connection strength, and installation space construction boundary of the multi-layer perforated plate meet the target range of step S1. If it meets the target range, proceed to step S13; if it does not meet the target range, optimize the following parameters: ① If the strain or fatigue does not meet the target range, reduce the single design displacement and increase the... ,improve Reduce if necessary or ②Constructing constraints that exceed limits: Prioritize reducing them. Optimize assembly (maintain) (If it still meets the standard), then bring the optimized parameters into step S3.

10. The structural design method for a multi-layer perforated plate vibration dual-control damper according to claim 1, characterized in that, The specific method for step S13 is that steps S6, S8, S10, and S12 must all be completed in one go, or the initial stiffness in two adjacent iterations must be determined. Yield strength Equivalent damping ratio The result is considered convergent if the change in the quantity satisfies one of the following conditions: ， ， If the changes of the three factors in two consecutive iterations are all below the above limits, it is determined that the changes are "stabilizing" and the optimization calculation ends.

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