Open AccessDesign of a discrete flexure for a SiC deformable mirror with PMN stacked-actuators
Author(s) -
Pilseong Kang,
Jin Woo Huh,
Kihun Lee,
Sang-Yeong Park,
Hyug-Gyo Rhee
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.436362
Subject(s) - actuator , finite element method , silicon carbide , materials science , optics , topology (electrical circuits) , piezoelectricity , deformable mirror , structural engineering , computer science , physics , engineering , composite material , electrical engineering , artificial intelligence
In the present work, a discrete flexure for silicon carbide (SiC) deformable mirror (DM) with Lead-Magnesium-Niobate (PMN) stacked-actuators is designed using topology and size optimizations. In order to fulfill the designated surface strokes of the SiC mirror without adhesive failure, discrete flexures are adopted between the mirror faceplate and the actuators. As the same design process for the flexure of the final DM model, which has a 140 mm diameter mirror faceplate and 489 channels of piezoelectric PMN-30PT single crystal multilayer actuators, the topology and the sizes of the flexure for the 5×5 engineering DM model are optimized. The topology and the size optimizations are conducted by GTAM and DesignXplorer in ANSYS based on finite element method (FEM). The prototype of the designed model is built and the test results show appropriate mirror deformations comparing with the simulated results without adhesive failure.