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Optical Engineering

High-accuracy numerical model of the Southern African large telescope mirror support truss
Author(s): Billy De Lange; Gerhard Venter
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Paper Abstract

In order to calibrate the primary mirror of the Southern African large telescope, a high-accuracy numerical model of the existing mirror support truss and its actual, current behavior is required. In this investigation, structural optimization techniques are used to tune a numerical model so that it accurately matches the measured output of a structure under a given load or combination of loads. A methodology for obtaining an accurate numerical model of such a structure by first investigating the behavior of the different strut types before attempting to model the structure as a whole is presented. This method yielded vast improvements in the numerical accuracy of a smaller, simpler laboratory structure’s numerical model.

Paper Details

Date Published: 3 October 2013
PDF: 10 pages
Opt. Eng. 52(10) 105102 doi: 10.1117/1.OE.52.10.105102
Published in: Optical Engineering Volume 52, Issue 10
Show Author Affiliations
Billy De Lange, Stellenbosch Univ. (South Africa)
Gerhard Venter, Stellenbosch Univ. (South Africa)

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