Particle damper for vibration reduction of circuit board

Abstract

The invention provides a particle damper for vibration reduction of a circuit board, which comprises an upper cover with threads and a box body with through holes, the upper cover and the box body are connected through bolts, the upper cover is adhered to the circuit board and is aligned with key components, and the box body is connected to the cover through bolts. The upper cover and the structure are tightly coupled to transmit loads, meanwhile, the material strength is high, high connection rigidity can be provided, assembly and disassembly abrasion is reduced, and particularly, the thickness of a connection area is increased through the design. The lower cover is made of duralumin, the light weight of the structure can be guaranteed and certain material strength can be provided through material selection, and the abrasion possibility is avoided through the design of the connecting through holes; according to the design, the connecting rigidity is guaranteed, meanwhile, the material consumption is reduced, and light weight is achieved.

Description

Technical Field

[0001] This invention belongs to the field of structural dynamics and vibration control, and specifically relates to a particle damper for vibration reduction of circuit boards. Background Technology

[0002] With the development of heavy-lift launch vehicles, manned lunar landings, and space travel, lightweight, composite materials, large-size, and thin-walled structures are being used more and more widely. However, with the increasing thrust, long endurance, and high-speed flight, the vibration and noise environment of spacecraft is becoming increasingly harsh. Large-size thin-walled structures, which are more sensitive to vibration and noise environments, may experience greater vibrations and are more prone to fatigue failure. Precision instruments and equipment also place higher demands on vibration control technology, such as higher precision, higher stability and reliability, and greater adaptability to complex operating conditions. Currently, the commonly used vibration reduction method is various forms of dynamic vibration absorbers. Traditional dynamic vibration absorbers target a narrow frequency band and are not suitable for complex and variable environments or wide-frequency external excitation loads. While active control methods can achieve wide-frequency vibration reduction, they often require high-precision models, making it difficult to guarantee their effectiveness when the structure changes in real-world environments.

[0003] Particle dampers are passive vibration reduction devices attached to controlled structures. They dissipate system energy, reduce acceleration response under external excitation, and prevent damage to vulnerable critical points such as components on circuit boards. As an emerging passive vibration reduction technology, particle dampers have the potential to be applied to the vibration reduction of large-size thin-walled composite material structures in spacecraft, reducing the possibility of structural damage and improving the reliability, safety, and comfort of spacecraft and astronauts. Research on nonlinear energy dissipation analysis methods for particle dampers can provide important technical support for the development of future next-generation launch vehicles and space shuttles, enhancing my country's independent innovation capabilities and basic research capabilities in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a particle damper for vibration reduction of circuit boards, which solves problems such as coupling method and location, material selection, connection method and environmental adaptability adjustable parameters of particle dampers.

[0005] The particle damper of this invention consists of two parts: a threaded top cover connected by bolts and a box body with through holes. The top cover is made of stainless steel and is attached to the circuit board for alignment with key components. The box body is made of hard aluminum and is bolted to the top cover for easy replacement. The length and width of the particle damper are designed according to the dimensions of the circuit board and key components, while the height and particle parameters are designed according to the vibration environment. The size, installation position, and particle parameters of the particle damper can be determined based on simulation analysis or experimental results.

[0006] The beneficial effects of this invention are as follows:

[0007] 1. The particle damper of this invention has variable size, installation position, and particle parameters; according to changes in vibration environment and structural characteristics, the particle damper parameters can improve the vibration reduction capability at a specific location under specific excitation.

[0008] 2. The particle damper of the present invention consists of two parts: a threaded top cover connected by bolts and a box body with through holes. The top cover is pasted on the circuit board and aligned with key components. The box body is bolted to the cover, which facilitates the replacement of the box body or materials. It is used for particle dampers of different sizes and particle parameters to adapt to different excitation characteristics.

[0009] 3. The upper cover of this invention is made of stainless steel and is attached to the circuit board, while the box body is made of hard aluminum. The upper cover is tightly coupled with the structure to transfer loads, and its high material strength provides strong connection rigidity and reduces wear during assembly and disassembly. In particular, this design also strengthens the thickness of the connection area. The lower cover is made of hard aluminum, and the material selection ensures both lightweight structure and sufficient material strength. The through-hole design in the connection avoids the possibility of wear. This design reduces material usage while ensuring connection rigidity, achieving lightweight construction. Attached Figure Description

[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0011] Figure 1 This is a 3D schematic diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the box lid of the present invention;

[0013] Figure 3 This is a schematic diagram of the box body of the present invention;

[0014] Figure 4 It is the invention of a circuit board coupling model for a particle damper. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0016] This embodiment provides a particle damper, such as Figure 1As shown, it consists of two parts: a threaded top cover and a box body with through holes, which are bolted together. The top cover is made of stainless steel and is attached to the circuit board, aligning with key components, such as... Figure 4 As shown. The box body is made of hard aluminum and is bolted to the lid for easy replacement. A schematic diagram of the lid and box body is shown below. Figure 2-3 As shown.

[0017] Furthermore, the overall effective thickness of the particle damper is set to 0.5 mm, and there are reinforcing structures in the top cover and box body designed for connection. The reinforcing structures take into account the size of the connectors, the space where the connection force acts, and the overall lightweight of the structure.

[0018] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A particle damper for vibration reduction of circuit boards, characterized in that, include: The device consists of two parts: a threaded top cover and a box body with through holes, which are connected by bolts. The top cover is attached to the circuit board and aligned with key components, while the box body is bolted to the cover.

2. The particle damper for circuit board vibration reduction according to claim 1, characterized in that, The top cover is made of stainless steel.

3. A particle damper for circuit board vibration reduction according to claim 1, characterized in that, The box body is made of hard aluminum.

4. A particle damper for circuit board vibration reduction according to claim 1, characterized in that, The overall effective thickness of the particle damper is 0.5 mm.

5. A particle damper for circuit board vibration reduction according to claim 1, characterized in that, The top cover and the box body have a reinforcing structure designed for connection. The design of the reinforcing structure takes into account the size of the connector, the space where the connection force acts, and the overall lightweight of the structure.

6. A particle damper for circuit board vibration reduction according to claim 1, characterized in that, The length and width of the particle damper are designed according to the dimensions of the circuit board and important components, and the height of the damper and particle parameters are designed according to the vibration environment.

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