Computer Science – Performance
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1167....2c&link_type=abstract
IN: Precision engineering and optomechanics; Proceedings of the Meeting, San Diego, CA, Aug. 10, 11, 1989 (A91-20951 07-74). Bel
Computer Science
Performance
1
Design Analysis, Mirrors, Nastran, Shapes, Structural Weight, Concavity, Gravitational Effects, Metal Foams, Nickel, Weight Reduction
Scientific paper
A parametric design study of light weight mirror shapes with various support conditions was performed utilizing the finite element program NASTRAN. Improvements in the mirror performance were made based on the following design criteria: (1) minimization of the optical surface wavefront variations, (2) minimization of the self-weight directly related to cost of manufacturing, and (3) optimal location of support points. A preprocessor to automatically generate a finite element model for each mirror geometry was developed in order to obtain the structural deformations systematically. Additionally, a postprocessor, which prepares an input data file for FRINGE (an optical computer code) was developed for generating the optical deflections that lead to the surface wavefront variations. Procedures and modeling techniques to achieve the optimum (the lightest and stiffest mirror shape due to self-weight) are addressed.
Cho Myung K.
Richard Ralph M.
Vukobratovich Daniel
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