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http://dx.doi.org/10.3807/KJOP.2017.28.6.304

Effective Finite Element Modeling for a Large Mirror System Using Separated Node Connectivity  

Pyun, Jae-Won (Department of Laser and Optical Information Engineering, Cheongju University)
Yang, Ho-Soon (Center for Space Optics, Korea Research Institute of Standards and Science)
Lee, Jong-Ung (Department of Laser and Optical Information Engineering, Cheongju University)
Moon, Il Kweon (Center for Space Optics, Korea Research Institute of Standards and Science)
Publication Information
Korean Journal of Optics and Photonics / v.28, no.6, 2017 , pp. 304-313 More about this Journal
Abstract
The finite element analysis for optimizing a mirror system consisting of a large-diameter mirror and flexures requires numerous, repetitive calculations and corrections of the actual model to satisfy the given design conditions. In general, modification of this real model is conducted by reconfiguring nodes of the elements. The reconfiguration is very time-consuming work, to fix the continuity of each of the newly formed component nodes at the interfaces. But the process is a very important factor in determining the analysis time. To save time in modeling and actual computation, and to attain faster convergence, we present a new opto-mechanical analysis using non-shared node connections at each of the interfaces of the optical components. By comparing the results between the new element model and a conventional element model with shared node connections, we found that the opto-mechanical performance was almost the same, but the time to reach the given condition was drastically reduced.
Keywords
Opto-mechanical analysis; FEA; Non-shared node;
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