5 January 1984 Finite Element Modeling Of Cooled High Energy Laser Optical Elements
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Proceedings Volume 0450, Structural Mechanics of Optical Systems I; (1984) https://doi.org/10.1117/12.939268
Event: 1983 Cambridge Symposium, 1983, Cambridge, United States
Abstract
Analysis of convectively cooled optical elements has been traditionally treated by finite element methods (FEM) techniques. NASTRAN, TAP-3, and CINDA are standard programs that have been used for predicting the thermal gradients and resultant distortions of high power laser cooled elements. Due to the high resolution of some optical ray trace codes, thermal/structural analyses using traditional NASTRAN and CINDA FEM are cost-prohibitive. The solution, is therefore, to develop high resolution analytical techniques to reduce cost and still produce the necessary optical distortion required by the optical engineers. Therefore, several thermal/structural codes have been developed to aid in the design and analysis of optical elements. The codes can interface with High Energy Laser (HEL) irradiance maps supplied by optical engineers, solve for the heat exchanger thermal gradients, and establish the necessary boundary conditions for subsequent NASTRAN FEM. The codes have been successfully used with irradiance maps with moderately large array sizes. Their use in predicting wavefront distortion has been verified through thermal testing.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lawrence J Schubert, Lawrence J Schubert, } "Finite Element Modeling Of Cooled High Energy Laser Optical Elements", Proc. SPIE 0450, Structural Mechanics of Optical Systems I, (5 January 1984); doi: 10.1117/12.939268; https://doi.org/10.1117/12.939268
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