High-accuracy numerical model of the Southern African large telescope mirror support truss

Billy De Lange; Gerhard Venter

doi:10.1117/1.OE.52.10.105102

3 October 2013 High-accuracy numerical model of the Southern African large telescope mirror support truss

Billy De Lange, Gerhard Venter

Author Affiliations +

Optical Engineering, Vol. 52, Issue 10, 105102 (October 2013). https://doi.org/10.1117/1.OE.52.10.105102

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.

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Billy De Lange and Gerhard Venter "High-accuracy numerical model of the Southern African large telescope mirror support truss," Optical Engineering 52(10), 105102 (3 October 2013). https://doi.org/10.1117/1.OE.52.10.105102

Published: 3 October 2013

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