Vibration tuning parts and structural components

Abstract

This application relates to a vibration-tuning component and structural element. The vibration-tuning component includes a body having a cavity; and a localized resonant structure housed within the cavity, the localized resonant structure being a semi-rigid structure capable of vibrating relative to the body. The body and the localized resonant structure are integrally formed using an additive manufacturing process and from an additive manufacturing material, including metal. The solution provided by this application not only enables the realization of complex cavity structures and localized resonant structures within cavities that are impossible to achieve using traditional machining methods, but also, compared to related technologies' localized resonant acoustic metamaterials, improves structural strength and stiffness, and possesses better load-bearing capacity.

Description

Technical Field

[0001] This application relates to the field of additive manufacturing technology, and in particular to vibration-tuning parts and structural components. Background Technology

[0002] Particle (or particle) dampers (or vibration dampers) generally consist of a shell with a cavity structure (usually made of metal) and particles (usually metal steel balls, tungsten balls, ceramics, sand, or other inorganic or organic materials). They are installed in different parts of a dynamic structure, utilizing the energy dissipation generated by collisions and friction between particles and between particles and the cavity walls to suppress the transmission of vibration waves, thus achieving damping and vibration reduction. Particle damper technology in related fields is mainly divided into two categories according to manufacturing processes: 1) machining a metal cavity container, filling it with particles or powder, and then sealing it; 2) machining a cavity into the structure using traditional machining methods, filling it with particles or powder, and then sealing it. Locally resonant acoustic metamaterials are a special type of acoustic material. The working principle of locally resonant acoustic metamaterials is mainly based on their internal local resonance effect. When external sound waves act on the material, resonance occurs at a specific frequency, thereby achieving effective control of the sound waves.

[0003] However, while local resonant acoustic metamaterial structures based on related technologies can form resonant band gaps and achieve vibration isolation in a certain frequency band, these structures have low stiffness and cannot bear loads. In addition, particle dampers based on related technologies are generally manufactured by machining and achieve damping and vibration reduction based on the coupling of rigid and discrete bodies, resulting in poor damping and vibration reduction effects over a wide frequency range. Summary of the Invention

[0004] To address or partially address the problems existing in related technologies, this application provides a vibration tuning component and structural component. This vibration tuning component can not only realize complex cavity structures and local resonance structures within cavities that are impossible to achieve by traditional machining methods, but also improve structural strength and stiffness and has better load-bearing capacity compared with local resonance acoustic metamaterials of related technologies.

[0005] The first aspect of this application provides a vibration tuning component, comprising:

[0006] The body has a cavity;

[0007] A local resonant structure is housed within the cavity, and the local resonant structure is a semi-rigid structure that can vibrate relative to the body.

[0008] The main body and the local resonant structure are integrally formed by additive manufacturing process and additive manufacturing materials.

[0009] In one implementation, the system further includes particles that are contained within the cavity and fill the area surrounding the localized resonant structure.

[0010] The particles are formed within the cavity using an additive manufacturing process and from additive manufacturing materials; or...

[0011] The cavity wall has at least one through hole that can be sealed. The diameter of the through hole is larger than the particle size. When the through hole is open, it is used to introduce the particle into the cavity.

[0012] In one implementation, the local resonant structure includes a cantilever and an oscillator;

[0013] The oscillator is disposed away from the cavity wall and is connected to the cavity via the cantilever.

[0014] In one implementation, the local resonance structure is a lattice-type local resonance structure.

[0015] The lattice-type local resonant structure includes a number of cells arranged in a preset pattern within the cavity. Each cell is composed of a cantilever and an oscillator. The oscillator is disposed away from the cavity wall and is connected to the cavity through the cantilever.

[0016] In one implementation, the oscillator is connected to the cavity wall via the cantilever; or,

[0017] It also includes a support structure housed within the cavity, the support structure being fixed relative to the cavity wall; the oscillator is connected to the support structure via the cantilever.

[0018] In one implementation, the cantilever includes a first connecting arm and two second connecting arms. The first connecting arm connects two opposite fixed points within the cavity, and the two second connecting arms connect two oscillators on both radial sides of the first connecting arm. One end of each of the two second connecting arms is connected to the first connecting arm, and the other end of each of the two second connecting arms is connected to its corresponding oscillator.

[0019] In one implementation, the support structure includes a bracket formed by connecting a plurality of rod-shaped bodies in a preset manner, the bracket being used to support adjacent and / or opposite cavity walls of the cavity.

[0020] In one implementation, the particle size is greater than 0.3 mm; and / or

[0021] The outer contour shape of the particle includes spherical, cylindrical, square, or polyhedral shapes; and / or

[0022] The cavity may be spherical, cylindrical, square, or polyhedral in shape.

[0023] In one implementation, the additive manufacturing material includes metallic materials and / or non-metallic materials;

[0024] The metallic material includes at least one of steel, aluminum alloy, titanium alloy, and shape memory alloy; the non-metallic material includes at least one of glass, ceramic, or plastic powder.

[0025] In one implementation, the body and the local resonant structure are formed by one of the following processes: fused deposition modeling, selective laser melting, stereolithography, electron beam melting, directional energy deposition, binder spraying, and material spraying.

[0026] A second aspect of this application provides a structural component,

[0027] Including the vibration tuning components described in the first aspect above;

[0028] The cavity of the vibration tuning component is formed within the structural component, and a local resonance structure is formed within the cavity.

[0029] In one implementation, the structural component and the local resonant structure within the cavity are integrally formed from additive manufacturing materials using an additive manufacturing process.

[0030] In one implementation, the structural component includes a vibration source and a target end to be tuned.

[0031] At least one vibration adjustment component is provided between the vibration source and the target end along the transmission direction of the vibration wave. The vibration adjustment component is used to amplify the vibration generated by the vibration source and transmit it to the target end.

[0032] The technical solution provided in this application may include the following beneficial effects:

[0033] The vibration tuning component provided in this application includes a body and a localized resonant structure. The body has a cavity, and the localized resonant structure is housed within the cavity. The localized resonant structure is a semi-rigid body capable of vibrating relative to the body. The body and the localized resonant structure are integrally formed from additive manufacturing materials using an additive manufacturing process. Because the localized resonant structure is integrally formed from additive manufacturing materials, it not only enables the realization of complex cavity structures and localized resonant structures within cavities that are impossible to achieve using traditional machining methods, but also, compared to related technologies' localized resonant acoustic metamaterials, this application can use additive manufacturing materials (such as metal materials) with higher rigidity to form the cavity structure. Therefore, it can improve the overall structural strength and stiffness of the vibration tuning component, giving it better load-bearing capacity.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0035] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0036] Figure 1 This is a schematic diagram of the structure of a vibration tuning component shown in one embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the structure of a vibration tuning component shown in another embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the local resonance structure of the vibration tuning component shown in the embodiments of this application;

[0039] Figure 4 This is a schematic diagram of the local resonance structure of a vibration tuning component shown in another embodiment of this application;

[0040] Figure 5 This is a schematic diagram of the local resonance structure of the vibration tuning component within the cavity, as shown in an embodiment of this application.

[0041] Figure 6 This is a schematic diagram of the local resonance structure of the vibration tuning component within the cavity, as shown in another embodiment of this application;

[0042] Figure 7 This is a schematic diagram of a structural component shown in one embodiment of this application.

[0043] Figure label:

[0044] Ontology-100;

[0045] Cavities - 101, 101a, 101b, 101c; Cavity wall - 1011;

[0046] Particle-102;

[0047] Localized resonant structure-103; cantilever-1031; first connecting arm-1031a; second connecting arm-1031b; oscillator-1032;

[0048] Support structure-110; Rod-shaped body-1101;

[0049] Structural component-200; Beam-201; Vibration source-210; Target end-220. Detailed Implementation

[0050] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0051] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0052] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0054] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In related technologies, locally resonant acoustic metamaterial structures can form resonant band gaps, achieving vibration isolation in a certain frequency band. However, these structures have low stiffness and cannot bear loads. Furthermore, particle dampers in related technologies are generally manufactured through machining, achieving damping and vibration reduction based on the coupling of rigid and discrete bodies, resulting in poor damping and vibration reduction effects over a wider range. To address these issues, this application provides a vibration-tuning component that not only enables complex cavity structures and locally resonant structures within cavities that are impossible to achieve using traditional machining methods, but also improves structural strength and stiffness compared to locally resonant acoustic metamaterials in related technologies, resulting in better load-bearing capacity.

[0056] It should be noted that the vibration tuning component of this application can be applied not only to vibration reduction scenarios but also to vibration enhancement scenarios. The natural frequency of the vibration tuning component can be set according to different application scenarios. When the natural frequency of the vibration tuning component is in a first matching mode with the external excitation frequency, the vibration tuning component has a vibration reduction effect; when the natural frequency of the vibration tuning component is in a second matching mode with the external excitation frequency, the vibration tuning component can play a vibration enhancement role. The first matching mode can refer to the difference between the natural frequency of the target component and the external excitation frequency being greater than a preset threshold, and the second matching mode can refer to the difference between the natural frequency of the target component and the external excitation frequency being less than a preset threshold.

[0057] The following embodiments illustrate the solution of this application using a vibration reduction scenario as an example. In this embodiment, the vibration tuning component can also be called a vibration reduction component or a damping component. In this embodiment, the natural frequency of the vibration tuning component and the external excitation frequency are in a first matching mode. The technical solution of the embodiments of this application is described in detail below with reference to the accompanying drawings.

[0058] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0059] Figure 1 This is a schematic diagram of the structure of a vibration tuning component shown in one embodiment of this application.

[0060] See Figure 1 This application provides a vibration tuning component, including a body 100 and a local resonance structure 103. The body has a cavity 101, and the local resonance structure 103 is accommodated in the cavity 101. The local resonance structure 103 is a semi-rigid structure that can vibrate relative to the body. The body 100 and the local resonance structure 103 are integrally formed by additive manufacturing process and by additive manufacturing material, wherein the additive manufacturing material includes rigid material.

[0061] Additive manufacturing (AM), also known as 3D printing, is a process that creates objects by adding material. A machine tool deposits material layer by layer with a precise geometric model, and computer-aided design software or a 3D object scanner is used to create a model that guides the hardware. The vibration-tuning part of this application is formed in an additive manufacturing apparatus.

[0062] Because the local resonance structure 103 of this application is integrally formed from additive manufacturing materials using additive manufacturing processes, it not only enables the creation of complex cavities and local resonance structures within these cavities that are impossible to achieve using traditional machining methods, thus achieving vibration isolation in a set frequency band, but also, compared to related technologies using local resonance acoustic metamaterials formed from polymer materials, this application can use additive manufacturing materials with higher rigidity (such as metal materials) to form the cavity structure. Therefore, it can improve the overall structural strength and stiffness of the vibration tuning component, giving it better load-bearing capacity. In this application, the local resonance structure 103 is a semi-rigid structure. The rigidity of a semi-rigid structure is between that of a rigid body and a discrete body. The semi-rigid structure of this application has a certain degree of flexibility, enabling it to absorb and disperse vibration energy. When the external excitation frequency experienced by the vibration tuning component approaches the natural frequency of the semi-rigid structure, the semi-rigid structure will resonate, generating a resonant bandgap, thereby achieving vibration isolation in a set frequency band.

[0063] In this application, the body 100 and the localized resonant structure 103 are formed by using additive manufacturing equipment to shape additive manufacturing materials using at least one of the following processes: fused deposition modeling, selective laser melting, stereolithography, electron beam melting, directional energy deposition, binder spraying, and material spraying. This allows for the creation of closed cavities and complex structures containing localized resonant structures that are difficult to achieve with conventional machining.

[0064] The additive manufacturing material can be a metal powder, including at least one of steel, aluminum alloy, titanium alloy, and shape memory alloy powders, but not limited to these; it can also be other metals or alloys. In some embodiments, the additive manufacturing material can also be a non-metallic powder, including at least one of glass, ceramic, or plastic powders. Compared with related technologies, the vibration tuning parts of this application have a wider range of molding materials, which can meet more application scenarios. When a metal material is selected, the resulting cavity structure has higher stiffness and stronger load-bearing capacity.

[0065] Related technologies, which produce simple cavity structures through machining, cannot control the internal structure of the cavity. For example, the cavity can only be cylindrical or square, and the interior can generally only be hollow. This simple cavity structure is insufficient to meet the needs of different vibration damping applications. In this application, the shape of the cavity 101 can include square, spherical, polyhedral, and irregularly shaped cavities, for example... Figure 1The cavity inside is square in shape. Figure 2 The cavity 101 has a polyhedral shape. By setting the cavity 101 to different shapes, the setting requirements of the cavity 101 on the vibration damping structure in specific application scenarios can be met.

[0066] See also Figure 1 The cavity 101 also includes particles 102, which fill the area around the local resonance structure 103. The particles 102 can rub, collide and impact with the local resonance structure 103 and the cavity wall 1011 of the cavity 102, thereby further consuming vibration energy. Under the resonance effect of the local resonance structure, the friction, collision and impact effects are enhanced, and the vibration energy is dissipated more effectively. Thus, under the dual effect, the vibration tuning component can achieve vibration reduction effect in a wider frequency range.

[0067] Particle dampers in related technologies generally use traditional machining methods to create cavities. Due to the limitations of machining methods, it is difficult to form closed cavities and complex internal structures. Moreover, they are all based on the coupling of rigid bodies (such as cavity walls) and discrete bodies (such as powder or particles) to achieve vibration reduction, which makes it difficult to achieve vibration reduction over a wide frequency range.

[0068] The vibration-tuning component of this application combines a local resonance structure with a cavity structure and particles. It is manufactured using additive manufacturing technology and integrally formed from additive manufacturing materials. Since the local resonance structure is a semi-rigid structure, it can generate resonance under the action of external force, thereby enhancing the collision and friction between particles, between particles and the local resonance structure, and between particles and the cavity wall, achieving a vibration reduction effect over a wider frequency range.

[0069] In addition, particle dampers of related technologies are generally formed into containers with openings by mechanical processing. Particles or powders are loaded into the container through the opening. The opening of the container generally needs to be larger than the particle or powder size. In order to prevent particles from leaking out of the opening during use, the opening needs to be sealed, which will increase the subsequent sealing process of the container.

[0070] In this embodiment, the particles 102 can be formed within the cavity 101 using additive manufacturing processes and additive manufacturing materials. The particles 102 can be formed directly from the original additive manufacturing material powder, achieving direct molding of the self-sealing particle 102 vibration-damping component. Therefore, there is no need to set an opening in the cavity, thus avoiding the sealing process. This results in a cavity structure with good structural integrity and continuity, further improving structural strength and stiffness. The coupling of structural strength and stiffness enhances the load-bearing capacity and also improves the manufacturing efficiency of the vibration-damping component. Specifically, the cavity and local resonance structure can be formed simultaneously during the additive manufacturing process. During additive manufacturing, the cavity wall 1011 and the local resonance structure 103 of the cavity 101 are first formed by selective melting and solidification. Simultaneously, some unmelted additive manufacturing material powder is sealed within the cavity 101, forming the particles 102 of this application. This allows the cavity 101, the local resonance structure 103, and the particles 102 to be formed simultaneously and integrally using additive manufacturing materials.

[0071] In some embodiments, particles 102 can also be introduced into the cavity 101 from the outside. The cavity wall 1011 of the cavity 101 may have at least one sealable through hole (not shown), the diameter of which is larger than the particle size of particles 102, so that particles 102 can be introduced into the cavity 101 through the through hole.

[0072] In some embodiments, when particles 102 are formed in the cavity 101 by an additive manufacturing process and from additive manufacturing material, the aperture of the through hole is smaller than the particle size of particles 102. When the through hole is open, it is used to draw out particles 102 with a particle size smaller than a preset value and / or residual additive manufacturing material in the cavity 101. This allows particles and powders with a particle size below the preset value to be discharged through the through hole, leaving only particles 102 with a particle size above the preset value in the cavity 101. This configuration not only allows for the control of the type of particles 102 in the cavity 101, but also allows for free control of the particle 102 filling rate in the cavity 101 within the range of 10% to 100%, avoiding the drawback of related technologies where the particle filling rate is difficult to control freely.

[0073] In the process of forming the cavity, the residual powder 103 that originally needed to be removed can also be sealed into the cavity 101 as particles for vibration damping. This not only avoids the process of removing the powder, but also uses the residual powder 103 as particles for vibration damping. This solves the dual problems of integrated molding of vibration damping parts and cleaning of residual powder, and also improves the manufacturing efficiency of vibration damping parts.

[0074] In some embodiments, the particle size of 102 is greater than 0.3 mm. During the additive manufacturing process, powder of additive manufacturing material with a particle size of 0.01-0.3 mm, enclosed in the cavity 101, can be melt-sintered to form particles 102 with a particle size between 0.3 mm and 2 mm or greater than 2 mm. This allows for the formation of particles 102 with a larger particle size range within the cavity 101, increasing the selectivity of the particle size and providing better vibration damping effects for different application scenarios.

[0075] In some embodiments, the particle 102 has a specific outer contour shape, which may include spherical, cylindrical, square, polyhedral, or irregularly shaped structures, but is not limited thereto. In some embodiments, the particle 102 is a combination of particles with different outer contour shapes, and the combination method can be freely set. For example, it may include a combination of spherical and cylindrical particles, a combination of spherical and square particles, a combination of spherical and polyhedral particles, a combination of cylindrical and square particles, a combination of spherical, cylindrical, and square particles, etc., but is not limited thereto. By using a combination of particles with multiple properties, a comprehensive vibration reduction effect can be achieved under complex vibration conditions in multiple frequency bands. The mixing of particles with different outer contour shapes can enhance the friction between particles and meet the vibration reduction requirements of a wide frequency range.

[0076] In some embodiments, particles 102 with different properties have different densities in the cavity 101. Since the density of particles 102 affects the dissipation of inertial momentum, by setting different densities of particles 102 with different properties in the cavity 101, it is possible to meet the needs of different energy dissipation scenarios.

[0077] See also Figure 1 In some specific embodiments, the local resonance structure 103 includes a cantilever 1031 and an oscillator 1032. The cantilever 1031 and the oscillator 1032 together constitute a semi-rigid structure. The oscillator 1032 is disposed away from the cavity wall of the cavity 101. The oscillator 1032 is connected to the cavity 101 through the cantilever, so that the oscillator can vibrate relative to the cavity wall 1011 of the cavity 101.

[0078] The oscillator 1032 being away from the cavity wall 1011 can be understood as the oscillator 1032 being close to the middle of the cavity 101 or at a position within the cavity 101 that is at a set distance from the cavity wall 101. The oscillator 1032 being connected to the cavity 101 via the cantilever 1031 can be understood as the oscillator 1032 being connected to the cavity wall of the cavity 101 via the cantilever 1031.

[0079] In this application, the cavity 101 is a closed structure. The cantilever 1031, the oscillator 1032, and the body 100 are integrally formed by additive manufacturing process and additive manufacturing material. Compared with the related technology that uses machining, this application can form a complex structure containing the local resonance structure 103 in the closed cavity. This allows the local resonance to be combined with the particle damper, which can not only improve the vibration reduction effect of the vibration tuning component in a wider frequency range, but also improve the load-bearing capacity of the vibration tuning component.

[0080] In this embodiment, the cantilever 1031 can be rod-shaped, and the oscillator 1032 can be a block-shaped body, such as a sphere, a square, or an irregular shape. In some embodiments, the inherent resonant frequency of the local resonance structure can be set according to actual vibration tuning requirements, thereby satisfying the vibration reduction effect under different resonant frequency scenarios. Specifically, cantilever 1031s with different degrees of stiffness or oscillators 1032s with different weights, structures, or shapes can be formed by additive manufacturing processes, thereby tuning the inherent resonant frequency of the local resonance structure. During the forming process, the stiffness of the cantilever 1031 can be adjusted by changing the radial dimension (or thickness), additive manufacturing material, or length of the cantilever 1031 through additive manufacturing processes.

[0081] In some embodiments, the local resonance structure 103 is a lattice-type local resonance structure. The lattice-type local resonance structure includes several cells arranged according to a predetermined pattern within the cavity. Each cell is a semi-rigid structure composed of cantilever 1031 and oscillator 1032. The oscillator 1032 is disposed away from the cavity wall 1011 of the cavity 101 and is connected to the cavity 101 via the cantilever 1031. When the external excitation frequency received by the vibration-tuning component approaches the inherent resonant frequency of the lattice-type resonance structure, the cantilever 1031 and oscillator 1032 can resonate simultaneously, thereby further achieving a better vibration isolation effect in the set frequency band. Simultaneously, when the oscillator 1032 resonates through the cantilever 1031, the collision, friction, or impact between the particle 102 and the cantilever 1031, oscillator 1032, and cavity wall 1011 of the cavity 101 is further enhanced, thereby further accelerating the dissipation of vibration energy.

[0082] See Figure 3 and Figure 4 In some embodiments, the vibration tuning component further includes a support structure 110 housed within the cavity 101. The support structure 110 is fixed relative to the cavity wall 1011 of the cavity 101, and the support structure 110 and the cavity wall 1011 of the cavity 101 are integrally formed using an additive manufacturing process. The support structure can support the cavity wall 1011 of the cavity 101, preventing deformation of the cavity wall when subjected to external loads, thereby improving the overall structural rigidity of the vibration tuning component and enabling the vibration tuning component to bear loads.

[0083] In some embodiments, the support structure 110 includes a bracket formed by connecting a plurality of rods 1101 in a predetermined manner. The bracket is used to support the adjacent and / or opposite cavity walls of the cavity. For example, the plurality of rods 1101 can be combined into a bracket by arranging them periodically or connecting them crosswise. The ends of the bracket along the length of the rods are connected to the cavity walls of the cavity 101 by an additive manufacturing process. In this application, the support structure 110 provides mechanical support to the cavity walls of the cavity 101. When the cavity is subjected to external forces such as bending, torsion, and pressure, the external forces can be transmitted more effectively through the support structure 110. The geometric configuration of the support structure 110 enables the cavity 101 to resist external forces in all directions without structural instability. Therefore, compared with related technologies, it can enhance the overall stiffness and structural strength of the vibration regulating parts, and further improve the load-bearing capacity through the coupling of stiffness and strength. In addition, the support structure 110 makes the internal structure of the cavity 101 more complex. As a result, the particles not only collide and rub against the cavity wall, cantilever 1031, and oscillator 1032 of the cavity 101, but also increase the collision and friction between the particles 102 and the outer surface of the support structure 103. Compared with related technologies, this further achieves a wider frequency range and better vibration reduction effect.

[0084] See Figure 3 In some embodiments, the oscillator 1302 is connected to the support structure 110 via a cantilever 1031. This connection can be achieved through one cantilever 1031 or through two cantilever 1032s at different locations on opposite sides of the oscillator. See also... Figure 5 In some embodiments, the oscillator 1032 can be connected to the cavity wall 1011 of the cavity 101 via a cantilever 1031. This connection can be achieved through a single cantilever 1031 or by two cantilever 1032 connected to the cavity wall 1011 at different positions around the oscillator 1032. This allows for more flexible arrangement of the oscillator and cantilever structures within the cavity using additive manufacturing processes, based on different vibration reduction requirements, thereby further improving the vibration reduction effect.

[0085] See Figure 4 and Figure 6In some embodiments, the cantilever 1031 includes a first connecting arm 1031a and two second connecting arms 1031b. The first connecting arm 1031a connects two opposite fixed points within the cavity 101, which may be located on the support structure 110 or the cavity wall 1011 of the cavity 101. The two second connecting arms 1031b connect to both sides of the first connecting arm 1031a and are used to connect two oscillators 1032 to the radially opposite sides of the first connecting arm 1031a, respectively. One end of each of the two second connecting arms 1031b is connected to the first connecting arm 1031a, and the other end of each of the two second connecting arms 1031b is connected to its respective oscillator 1032. In this embodiment, the structure consisting of the first connecting arm 1031a, two second connecting arms 1031b, and two oscillators 1032 is arranged in the cavity according to a set pattern, which can form the cell of the above-mentioned lattice-type local resonance structure. The first connecting arm 1031a, the two second connecting arms 1031, and the two oscillators together form a semi-rigid structure, so that the vibration tuning component can achieve a vibration reduction effect at a specific resonance frequency.

[0086] The above describes the vibration-adjusting component of this application. Accordingly, this application also provides a structural component that uses the vibration-adjusting component, in which the vibration-adjusting component has a vibration-damping effect.

[0087] This application also provides a structural component, which includes a vibration tuning component as described in the above embodiment. A cavity for the vibration tuning component is formed within the structural component, and a local resonance structure is formed within the cavity.

[0088] Because the structural components include vibration-tuning parts, it can not only achieve complex cavities and localized resonant structures within cavities that are impossible to achieve using traditional machining methods, thus realizing vibration isolation effects within a set frequency band, but also, compared to related technologies using localized resonant acoustic metamaterials formed from polymer materials, this application can use additive manufacturing materials (such as metal materials) with higher rigidity to form the cavity structure. Therefore, it can improve the overall structural strength and stiffness of the vibration-tuning parts.

[0089] When the function of the vibration regulating component is to reduce vibration, the structural component of this application can also have the following structure:

[0090] 1. Structural components connected to a vibration source, such as support structures or frame structures, have vibration-adjusting components installed within them. Random vibrations of 0-2000Hz generated by the vibration source can be transmitted to the support structure, and vibration-adjusting components are used to reduce vibration and protect the load on the support structure; alternatively, constant vibrations generated by vibration sources such as pumps can be transmitted to the frame structure, and vibration-adjusting components are used to reduce the vibration transmitted to the frame structure.

[0091] 2. Connecting parts (e.g., bolts) and vibration-adjusting components are placed on the vibration transmission path of the connecting parts to reduce vibration of the connecting parts on the transmission path.

[0092] 3. Machine tool components, such as the tool holder or tool post of a machine tool, vibration adjustment parts can be set in the tool holder or tool post to suppress chatter generated by the tool holder or tool post during machine tool operation.

[0093] 4. Rotating components, such as rolling bearings, have vibration-adjusting parts located on the inner and outer rings of the balls and bearings to reduce vibration during bearing rotation.

[0094] 5. Transmission components, such as gear mechanisms, have vibration-adjusting parts installed in the gears to reduce vibrations generated during gear meshing.

[0095] 6. Power output components, such as motor shafts, with vibration damping parts installed on the shaft to reduce the vibration transmitted to the shaft when the motor rotates.

[0096] 7. Communication components, such as damped radar or communication antennas, with vibration modulation parts installed on the damped radar or communication antennas to reduce the vibrations generated when the damped radar or communication antennas rotate.

[0097] In some embodiments, the structural components and the local resonant structures within the cavities are integrally formed using additive manufacturing processes and additive manufacturing materials. This allows for the formation of vibration-modulating components that are integral with the structural components, thereby enhancing the overall stiffness and load-bearing capacity of the structural components.

[0098] This application also provides a structural component that utilizes the aforementioned vibration-adjusting component, which has a vibration-enhancing function in the structural component. The following describes the solution of this application using vibration enhancement as an example:

[0099] In some embodiments, the structural component 200 includes a vibration source 210 and a target end 220 to be vibrated; at least one vibration adjustment component is provided between the vibration source 210 and the target end 220 along the transmission direction of the vibration wave, and the vibration adjustment component is used to amplify the vibration generated by the vibration source 210 and transmit it to the target end 220 to increase the vibration of the target end 220.

[0100] See Figure 7 In this embodiment, the structural component 200 can be a beam vibrator, which includes a beam 201, a vibration source 210 can be a motor, and the target end 320 can be a vibrating head or a stirring head located away from the vibration source 310.

[0101] At least one cavity can be formed within the beam 201 using additive manufacturing processes, and localized resonant structures and particles can be formed within the cavity using additive manufacturing processes. For example... Figure 7 Multiple cavities, namely cavities 101a, 101b and 101c, are formed in the beam 201 along the direction of vibration wave transmission X. Each cavity contains a local resonance structure (not shown) and particles 102.

[0102] In this embodiment, the frequency generated by the vibration source 210 is the external excitation frequency, and the frequency of the vibration adjustment component is the natural frequency. The natural frequency of the vibration adjustment component can be determined according to actual needs by setting the vibration adjustment component to different structural forms. When the external excitation frequency is close to the natural frequency of the vibration adjustment component, the local resonance structure of the vibration adjustment component is made to resonate according to the vibration wave transmission on the beam 201, which further increases the vibration of the target end 220, that is, amplifies the vibration of the vibration source 210. Under small energy input, the vibration of the target end 220 is increased by generating a wider resonance frequency. The large vibration generated by the target end 220 can be used for material screening, conveying, compaction and other operations.

[0103] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A vibration regulating component, characterized in that, include: The body has a cavity; A local resonant structure is housed within the cavity, and the local resonant structure is a semi-rigid structure that can vibrate relative to the body. The main body and the local resonant structure are integrally formed by additive manufacturing process and additive manufacturing materials.

2. The vibration adjustment component according to claim 1, characterized in that: It also includes particles, which are contained in the cavity and fill the area surrounding the local resonant structure; The particles are formed within the cavity using an additive manufacturing process and from additive manufacturing materials; or... The cavity wall has at least one through hole that can be sealed. The diameter of the through hole is larger than the particle size. When the through hole is open, it is used to introduce the particle into the cavity.

3. The vibration adjustment component according to claim 1, characterized in that: The local resonant structure includes a cantilever and an oscillator; The oscillator is disposed away from the cavity wall and is connected to the cavity via the cantilever.

4. The vibration adjustment component according to claim 1, characterized in that: The local resonance structure is a lattice-type local resonance structure. The lattice-type local resonance structure includes a number of cells arranged in a preset pattern within the cavity. Each cell is a semi-rigid structure composed of a cantilever and an oscillator. The oscillator is located away from the cavity wall and is connected to the cavity through the cantilever.

5. The vibration adjustment component according to claim 3 or 4, characterized in that: The oscillator is connected to the cavity wall via the cantilever; or, It also includes a support structure housed within the cavity, the support structure being fixed relative to the cavity wall; the oscillator is connected to the support structure via the cantilever.

6. The vibration adjustment component according to claim 3 or 4, characterized in that: The cantilever includes a first connecting arm and two second connecting arms. The first connecting arm connects two opposite fixed points within the cavity. The two second connecting arms are used to connect two oscillators on both radial sides of the first connecting arm. One end of each of the two second connecting arms is connected to the first connecting arm, and the other end of each of the two second connecting arms is connected to its corresponding oscillator.

7. The vibration tuning component according to claim 5, characterized in that: The support structure includes a bracket consisting of several rod-shaped bodies connected in a preset manner, the bracket being used to support adjacent and / or opposite cavity walls of the cavity.

8. The vibration adjustment component according to claim 2, characterized in that, The particle size is greater than 0.3 mm; and / or The outer contour shape of the particle includes spherical, cylindrical, square, or polyhedral shapes; and / or The cavity may be spherical, cylindrical, square, or polyhedral in shape.

9. The vibration adjustment component according to claim 1, characterized in that, The additive manufacturing materials include metallic materials and / or non-metallic materials; The metallic material includes at least one of steel, aluminum alloy, titanium alloy and shape memory alloy powder; the non-metallic material includes at least one of glass, ceramic or plastic powder.

10. The vibration adjustment component according to claim 1, characterized in that: The body and the local resonant structure are formed by one of the following processes: fused deposition modeling, selective laser melting, stereolithography, electron beam melting, directional energy deposition, binder spraying, and material spraying.

11. A structural component, characterized in that: Includes the vibration tuning component as described in any one of claims 1-10; The cavity of the vibration tuning component is formed within the structural component, and a local resonance structure is formed within the cavity.

12. The structural component according to claim 11, characterized in that: The structural component and the local resonant structure within the cavity are integrally formed using additive manufacturing processes and additive manufacturing materials.

13. The structural component according to claim 11, characterized in that: The structural component includes a vibration source and a target end to be tuned. At least one vibration adjustment component is provided between the vibration source and the target end along the transmission direction of the vibration wave. The vibration adjustment component is used to amplify the vibration generated by the vibration source and transmit it to the target end.

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