Particle damping vibration absorption device under weightless environment

A particle damping and environmental technology, applied in shock absorbers, friction shock absorbers, springs, etc., can solve problems such as not necessarily applicable, particles cannot exert damping effect, and particle damping is less, to ensure dissipation effect, small additional The effect of mass ratio and simple structure

Active Publication Date: 2016-09-14
XI AN JIAOTONG UNIV
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  • Claims
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Problems solved by technology

However, in the special environment of space (under the condition of weightlessness), the particles are out of the shackles of gravity, and the particles will be loosely and randomly suspended in the entire cavity of the container and cannot exert the damping effect.
Since...

Method used

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  • Particle damping vibration absorption device under weightless environment
  • Particle damping vibration absorption device under weightless environment
  • Particle damping vibration absorption device under weightless environment

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing and embodiment, and present embodiment does not limit the present invention, and all adopt similar principle of the present invention, method and similar change thereof, all should be included in protection domain of the present invention.

[0018] In one embodiment, the present invention discloses a particle damping and vibration-absorbing device in a weightless environment, the device includes damping particles, a dynamic vibration-absorbing structure, and a housing;

[0019] The damping particles and the dynamic shock absorbing structure are located in the casing;

[0020] The damping particles are used to dissipate vibration energy input from the outside;

[0021] The dynamic vibration-absorbing structure is used to ensure continuous dissipation of the vibration energy of damping particles in a weightless environment;

[0022] The housing provides a sealed space for the d...

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Abstract

The invention discloses a particle damping vibration absorption device under the weightless environment. The device comprises damping particles, a power vibration absorption structure and a shell containing the damping particles and the power vibration absorption structure; the power vibration absorption structure comprises two spring-mass block systems and specifically comprises two light cylindrical spiral compression springs and two cylindrical mass blocks; the shell comprises a cylindrical shell with internal threads at the two ends, two screw plugs and two guide rods used for guiding motion of the mass blocks in the power vibration absorption structure; and according to the device, the two mass blocks connected with the vibration system in a different-elasticity manner are utilized for continuously impacting the particles under the weightless environment, and continuous collision, friction and extrusion among the particles are promoted so as to dissipate energy of the vibration system.

Description

Technical field: [0001] The invention belongs to the field of passive control of structural vibration, in particular to a particle damping vibration-absorbing device in a weightless environment. Background technique: [0002] Non-obstructive particle damping technology is a relatively new passive vibration control technology. It makes some holes on the structure or attaches some hollow containers, and then fills them with damping granular materials with specific shapes, components and sizes, and uses the interaction between granular materials and the interaction between granular materials and structures to dissipate external input. Vibration energy, so as to achieve the purpose of reducing the vibration of the structure. Due to its advantages of high reliability and applicability to harsh environments, it is especially suitable for vibration reduction of aerospace structures. However, in the special environment of space (under the condition of weightlessness), the particle...

Claims

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Application Information

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IPC IPC(8): F16F7/01F16F7/104
CPCF16F7/015F16F7/104F16F2238/00
Inventor 王小鹏陈天宁张凯奚延辉
Owner XI AN JIAOTONG UNIV
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