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Satellite vibration isolation/reduction support made of chopped carbon fiber reinforced thermoplastic composite material

A technology for reinforcing thermoplastic and chopped carbon fibers, which is applied in non-rotational vibration suppression, space navigation equipment, space navigation aircraft, etc. Easy to scale production, low cost, strong practicability

Active Publication Date: 2022-05-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: the lightweight design of an existing satellite support is insufficient and the support lacks damping, resulting in insufficient vibration reduction capability

Method used

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  • Satellite vibration isolation/reduction support made of chopped carbon fiber reinforced thermoplastic composite material
  • Satellite vibration isolation/reduction support made of chopped carbon fiber reinforced thermoplastic composite material
  • Satellite vibration isolation/reduction support made of chopped carbon fiber reinforced thermoplastic composite material

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specific example 1

[0032] The specific example 1 is the design of the satellite isolation / vibration damping bracket of the chopped carbon fiber reinforced PPS composite material, and the steps are as follows:

[0033] 1) Perform a standard tensile test to test the basic mechanical properties of the composite material to obtain the elastic constant and Poisson's ratio. The tensile elastic modulus of the composite material is 28GPa, and the Poisson's ratio is 0.35.

[0034] 2) Establish a finite element model of the initial body of the satellite bracket, the material is aluminum alloy, the mass is 7.0Kg, such as figure 2 , and carry out the bearing capacity analysis, it is concluded that the displacement of the bearing surface is 0.12mm under the static load of 1764N, and then the random vibration analysis is carried out. The power spectral density function of the random vibration is based on the rocket launch Based on the actual test, the real and reliable data obtained, in which the equivalent ...

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Abstract

The invention provides a satellite vibration isolation / reduction support made of a chopped carbon fiber reinforced thermoplastic composite material, and relates to the technical field of lightweight design and manufacturing of aerospace and the like, the support mainly comprises a middle cylinder area and four bridge type supporting leg areas, and the two parts are connected through bolts; considering the limitation of the molding process, the stent configuration is further optimized, and the stent structure is prepared by using an injection molding process. Meanwhile, the satellite vibration isolation / reduction support made of the chopped carbon fiber reinforced thermoplastic composite material can be used for large loads and complex working conditions, and the connectivity, the overall strength stability, the vibration isolation performance and the service life of the support all meet the design requirements. The invention provides an efficient optimal design and manufacturing method for engineering manufacturing of thermoplastic composite materials, and the satellite vibration isolation / reduction support manufactured by the method is low in cost, high in practicability and easy to produce on a large scale.

Description

technical field [0001] The invention belongs to the technical field of lightweight design and manufacture of aerospace and the like, relates to the structural reinforcement design of a chopped carbon fiber reinforced thermoplastic composite material bracket, and particularly relates to a satellite isolation / vibration damping bracket based on the chopped carbon fiber reinforced thermoplastic composite material. Background technique [0002] Chopped carbon fiber reinforced thermoplastic composites have excellent specific strength, stiffness, material anisotropy, corrosion resistance, fatigue resistance, shock absorption, energy absorption and other properties, which make their applications in modern aerospace and automotive fields increase rapidly. The outstanding properties exhibited by chopped carbon fiber reinforced thermoplastic composites are not only used to reduce the weight of the structure, but also to improve the overall performance of the structure. Compared with th...

Claims

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Application Information

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IPC IPC(8): B64G1/66F16F15/02F16F15/04B29C45/00B29C45/77B29C45/78
CPCB64G1/66F16F15/02F16F15/04B29C45/0005B29C45/77B29C45/78B29C2945/76498B29C2945/76531B29C2945/76732G06F30/23B64G1/228
Inventor 李桐牛飞叶辉王博
Owner DALIAN UNIV OF TECH
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