Space rod piece structure vibration reduction device and method

A vibration damping device, space rod technology, applied in the direction of shock absorber, friction shock absorber, shock absorber, etc., can solve the problem of reducing the attitude stability of the spacecraft platform, affecting the normal operation of the spacecraft, and the vibration of the space rod structure, etc. problem, to achieve the effect of fast and stable structure of space rod, simple structure and good effect

Active Publication Date: 2021-09-17
XIAMEN ZHEN-WEI TECH CO LED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spatial member structures have been widely used in many fields, but the vibration problem of spatial member structures has always been difficult to avoid, and it is easy to cause serious impacts.
More seriously, when the solar wing enters and exits the sun's shadow, due to the drastic change of the external heat flow, it may cause thermal flutter of the solar wing, which seriousl

Method used

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  • Space rod piece structure vibration reduction device and method
  • Space rod piece structure vibration reduction device and method
  • Space rod piece structure vibration reduction device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1-2 As shown, the present invention discloses a space bar structure vibration damping device, which includes several particle dampers 1 for installation on the space bar structure 2, and the particle damper 1 includes a closed cavity 12 inside. Shell 11 and several damping particles 13 built in the cavity 12 to form a particle medium contact stress network, when the vibration frequency of the space bar structure 2 is less than 200Hz, the restitution coefficient of the damping particles 13 is 0.4-0.7, and the friction coefficient is 0.05- 0.3, when the vibration frequency of the space member structure 2 is 200-1000 Hz, the restitution coefficient of the damping particles 13 is 0.1-0.4, and the friction coefficient is 0.3-0.55.

[0040] When the vibration frequency of the space bar structure 2 is less than 200Hz, the filling rate of the damping particles 13 is set between 85% and 90%; when the vibration frequency of the space bar structure 2 is 200-1000Hz,...

Embodiment 2

[0058] On the basis of the first embodiment above, as image 3 As shown, the space member structure 2 is composed of several parallel and spaced planar member structures 21 connected to each other. 211 and the lower chord 212 are affixed to each other to form the first vertical bar 213 of a rectangular frame, one end is fixed to the center of the upper chord 211 and the other end is fixed to the second vertical bar 214 at the center of the lower chord 212, and the second vertical bar 214 is separately arranged on the second vertical bar. 214 on both sides and one end is affixed with the upper chord 211 and the other end is affixed with the lower chord 212, the first oblique rod 215, the transverse web rod 217 with both ends affixed to the first oblique rod 215, and several second oblique rods. Rod 216 , one end of the second slanting rod 216 is fixedly connected to the first slanting rod 215 , and the other end is fixedly connected to the second vertical rod 214 .

[0059] Th...

Embodiment 3

[0061] On the basis of the above-mentioned embodiment two, as Figure 4 As shown, a base 3 is provided at the bottom of the space bar structure 2 , and several vibration isolators 4 are set between the space bar structure 2 and the base 3 .

[0062] The vibration isolator 4 is preferably a rubber vibration isolator, which is combined with the space bar structure 2 to form a vibration isolation floating raft. When vibration occurs, the particle damper 1 located on the space bar structure 2 can consume the vibration energy on the structure in advance Partly, the transmission of vibration energy to the vibration isolator 4 is reduced, the high-frequency standing wave problem existing in the vibration isolator 4 is effectively improved, the vibration isolation efficiency of the vibration isolator 4 is improved, and the overall vibration isolation effect is better.

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PUM

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Abstract

The invention discloses a space rod piece structure vibration reduction device. The space rod piece structure vibration reduction device comprises a plurality of particle dampers used for being installed on a space rod piece structure; each particle damper comprises a shell and a plurality of damping particles, wherein a closed cavity is formed in the shell, and the damping particles are arranged in the cavity to form a particle medium contact stress network; when the vibration frequency of the space rod piece structure is smaller than 200Hz, the recovery coefficient of the damping particles ranges from 0.4 to 0.7, and the friction coefficient of the damping particles ranges from 0.05 to 0.3; and when the vibration frequency of the space rod piece structure ranges from 200Hz to 1000Hz, the recovery coefficient of the damping particles ranges from 0.1 to 0.4, and the friction coefficient of the damping particles ranges from 0.3 to 0.55. The invention further discloses a space rod piece structure vibration reduction method. The space rod piece structure vibration reduction device is good in vibration reduction effect and high in pertinence, the space rod piece structure can be rapid and stable, and the obvious vibration reduction effect is achieved in the full-frequency band, especially the high-frequency band.

Description

technical field [0001] The invention relates to the technical field of vibration reduction, in particular to a vibration reduction device for a space bar structure and a vibration reduction method using the device. Background technique [0002] The space bar structure first appeared in the field of aerospace and construction, and has been widely used. The solar panel brackets, radio communication antennas, telescopic robotic arms, steel frame iron towers, bridges, etc. of satellites and space stations are basically composed of space bar structures. Spatial member structures have been widely used in many fields, but the vibration problem of spatial member structures has always been unavoidable, and it is easy to cause serious impacts. [0003] For example, in the field of ships, vibrations will be generated during the navigation of the ship, which will easily affect the safety of the ship and the health of the people on board. Certain vibration isolation measures need to be ...

Claims

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Application Information

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IPC IPC(8): F16F7/02F16F15/02
CPCF16F7/023F16F15/02
Inventor 肖望强时金崧
Owner XIAMEN ZHEN-WEI TECH CO LED
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