Mountings for a four-meter glass mirror

Alson E. Hatheway; Vigen Ghazarian; David F. Bella

doi:10.1117/12.21542

1 October 1990 Mountings for a four-meter glass mirror

Alson E. Hatheway, Vigen Ghazarian, David F. Bella

Proceedings Volume 1303, Advances in Optical Structure Systems; (1990) https://doi.org/10.1117/12.21542
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

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.

Citation Download Citation

Alson E. Hatheway, Vigen Ghazarian, and David F. Bella "Mountings for a four-meter glass mirror", Proc. SPIE 1303, Advances in Optical Structure Systems, (1 October 1990); https://doi.org/10.1117/12.21542

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