Numerical Investigation on Fatigue Problem of Cable Net Structure of Five-Hundred-Meter Aperture Spherical Radio Telescope

Peng Jiang

doi:10.4028/www.scientific.net/AMR.936.1351

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936Numerical Investigation on Fatigue Problem of...

Numerical Investigation on Fatigue Problem of Cable Net Structure of Five-Hundred-Meter Aperture Spherical Radio Telescope

Abstract:

The reflector of Five-hundred-meter Aperture Spherical radio Telescope (FAST) is supported by cable-net structure, so that to enable its reflector surface to form a paraboloid from a sphere in real time through active control. However, such form-changing operation would lead to about 500MPa stress range for the cable-net structure. Such stress range is nearly twice as much of that defined by the relative standard. So the cable-net structure is the most critical and expendable part of FAST reflector system. So, the service life of FAST would directly depend on the residual fatigue life of its cable-net structure. The present paper would make an effort to find a more appropriate deformation strategy to decrease the stress amplitude of the cable during form-changing operation.

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Periodical:

Advanced Materials Research (Volume 936)

Pages:

1351-1355

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.1351

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Online since:

June 2014

Authors:

Peng Jiang*

Keywords:

Active Reflector, Cable Net Structure, FAST Engineering, Mechanical Analysis

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References

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