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Proceedings Paper

Mountings for a four-meter glass mirror
Author(s): Alson E. Hatheway; Vigen Ghazarian; David F. Bella
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Paper Abstract

In the late 1960's Malvick and Pearson' used dynamic relaxation techniques to solve for the deflections ofa four meter mirror in a variety of mounting configurations of interest to the astronomical community. The material has been widely used to design the mounting of large primary mirrors in a generation of optical instruments. In view of the advances in computational techniques and hardware in the intervening twenty years there has been interest in duplicating the analysis in a contemporary finite element analysis code. The writers have been investigating each of the fourteen mounting configurations used by the original authors by coding the problems for solution inMSC/NASTRAN, Version 66, and solving for the sameloads and boundary conditions. This paper is a discussion of the formulation of the problem in the fmite element code and a comparison of some of the initial results.

Paper Details

Date Published: 1 October 1990
PDF: 6 pages
Proc. SPIE 1303, Advances in Optical Structure Systems, (1 October 1990); doi: 10.1117/12.21542
Show Author Affiliations
Alson E. Hatheway, Alson E. Hatheway, Inc. (United States)
Vigen Ghazarian, MacNeal-Schwendler Corp. (United States)
David F. Bella, MacNeal-Schwendler Corp. (United States)

Published in SPIE Proceedings Vol. 1303:
Advances in Optical Structure Systems
John A. Breakwell; Victor L. Genberg; Gary C. Krumweide, Editor(s)

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