Surface Accuracy Analysis of Single Panels for the Shanghai 65-M Radio Telescope

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Abstract: We presented the surface accuracy measurements of 5 single panels of the Shanghai 65-meter radio telescope by employing the coordinate measuring machine and laser tracker. The measurement data obtained from the two instruments were analyzed with the common point transformation and CAD surface fitting techniques, respectively. The derived rms uncertainties of panel accuracy from two methods are consistent with each other, and both match the design specification. The simulations of the effects of manufacturing error, gravity, temperature and wind on the panel surface accuracy with the finite element analysis method suggest that the first two factors account for primary sources of the accuracy uncertainty. The panel deformation under concentrated load was analyzed through finite element analysis and experiment, and the comparison error is 5.6%. There is not plastic deformation when people of weight below 70kg installs and remedies the panel.

WSEAS Transactions on Applied and Theoretical Mechanics, ISSN / E-ISSN: 1991-8747 / 2224-3429, Volume 10, 2015, Art. #6

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Li Fu, Guoxi Liu, Chao Jin, Feng Yan, Tao An, Zhiqiang Shen, "Surface Accuracy Analysis of Single Panels for the Shanghai 65-M Radio Telescope," WSEAS Transactions on Applied and Theoretical Mechanics, vol. 10, pp. 54-61, 2015, DOI:
Li Fu, Guoxi Liu, Chao Jin, Feng Yan, Tao An, Zhiqiang Shen. Surface Accuracy Analysis of Single Panels for the Shanghai 65-M Radio Telescope. WSEAS Transactions on Applied and Theoretical Mechanics. 2015;10:54-61.
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