Congjing Wang, Dong Wang, Xin Huang, Jing Wang. Optimization and Finite Element Analysis of Large-Aperture SiC Lightweight Primary Mirror[J]. Acta Optica Sinica, 2021, 41(11): 1122002
- Acta Optica Sinica
- Vol. 41, Issue 11, 1122002 (2021)
Fig. 1. Three-dimensional model of fan-shaped lightweight primary mirror
Fig. 2. Axial brace model
Fig. 3. Distribution diagram of support points
Fig. 4. Radial brace model
Fig. 5. Distribution diagram of support structures
Fig. 6. Finite element model of primary mirror chamber
Fig. 7. Stress nephogram of optical axis vertical
Fig. 8. Stress nephogram with optical axis of 45°
Fig. 9. Stress nephogram of optical axis horizontal
Fig. 10. Surface error curves of primary mirror
Fig. 11. Displacement nephogram of optical axis vertical
Fig. 12. Displacement nephogram with optical axis of 45°
Fig. 13. Displacement nephogram of optical axis horizontal
Fig. 14. Test result of primary mirror surface
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Table 1. Physical properties of SiC
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Table 2. Comparative analysis of primary mirror in different situations
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