Nonlinear analysis method for predicting optical surface deformations resulted from assembly process

Wang Dong; Yan Yong; Jin Guang

doi:10.1117/12.866681

13 October 2010 Nonlinear analysis method for predicting optical surface deformations resulted from assembly process

Wang Dong, Yan Yong, Jin Guang

Proceedings Volume 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 76540A (2010) https://doi.org/10.1117/12.866681
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

There are three main nonlinear elements in the large mirror assemblies, which are screw pretension, adhesive stress and state changes in the assembly process. The optical shape will be influenced seriously by these factors. But the impacts will not be shown in linear analysis results, because as the simplification, these factors have been ignored. The nonlinear analysis method for predicting optical surface deformations resulted from assembly process is discussed in detail. Take a typical mirror support structure for example, the nonlinear analysis model was established. Comparing the calculation results with the optical shape test, it is illustrated that nonlinear analysis is more accurate and closer to the test result. And according to the simulation result, the bowl-shaped depression which was discovered in the test can also be explained reasonably.

Citation Download Citation

Wang Dong, Yan Yong, and Jin Guang "Nonlinear analysis method for predicting optical surface deformations resulted from assembly process", Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 76540A (13 October 2010); https://doi.org/10.1117/12.866681

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