Analytical method for structural damping characteristics of spacecraft support

A technology with damping characteristics and structural damping, applied in the field of spacecraft, can solve the problems of high cost of material production, and achieve the effect of reducing material cost and production cost, and improving accuracy

Inactive Publication Date: 2016-09-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

And once the design of the bracket changes, the experiment needs to be repeated
As a result, experiments to determine the damping characteristics of current stent structures often require a large amount of material and production costs

Method used

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  • Analytical method for structural damping characteristics of spacecraft support
  • Analytical method for structural damping characteristics of spacecraft support
  • Analytical method for structural damping characteristics of spacecraft support

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Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Hereinafter, the embodiments of the present invention will be described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The following embodiments described with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention. Those skilled in the art can understand that, unless specifically stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in t...

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Abstract

According to one embodiment of the invention, an analytical method for structural damping characteristics of spacecraft support is disclosed, which relates to the technical field of spacecraft and can greatly reduce the material cost and the production cost for measuring experiments. The method comprises the following steps: extracting influence factor data and generating a change level value according to the influence factor data; for each combination of support test pieces and counterweight blocks, analyzing for obtaining all-order resonance mode frequencies and modal damping ratios of support structures in frequency bands through a counterweight block-vibration table board acceleration movement transfer function, and obtaining the damping characteristic actual values of the support structures distributed according to refined frequency band sections; obtaining an overall prediction computational formula and a prediction error range according to the obtained damping characteristic actual values of the support structures distributed according to refined frequency band sections; and according to the obtained prediction formula and prediction error range, screening and obtaining to-be-tested sample schemes. The invention is suitable for damping tests on supports.

Description

Technical field [0001] The invention relates to the technical field of spacecraft, in particular to a method for analyzing the structural damping characteristics of a spacecraft support. Background technique [0002] In the overall design of spacecraft products, the bracket is mainly used as a structural component to install and support key electronic equipment. At the same time, the basic vibration of the spacecraft shell will also be transmitted to the electronic equipment through the bracket, affecting the normal operation of the equipment or even destroying it. Electronic equipment. Therefore, when designing spacecraft products, it is necessary to consider making the vibration response value of various electronic equipment mounted on the bracket less than the limit value that the equipment can withstand. [0003] As the main way to transmit vibration energy, the damping characteristics of the bracket have a crucial effect on the vibration response of the equipment. Since damp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/02
Inventor 贺旭东施萌陈怀海
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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