Volume 3 Issue 6
Dec.  2010
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SUN Ning. Optimal design of support system for a 1 m diameter primary mirror[J]. Chinese Optics, 2010, 3(6): 644-648.
Citation: SUN Ning. Optimal design of support system for a 1 m diameter primary mirror[J]. Chinese Optics, 2010, 3(6): 644-648.

Optimal design of support system for a 1 m diameter primary mirror

  • Received Date: 22 Jul 2010
  • Rev Recd Date: 24 Sep 2010
  • Publish Date: 20 Dec 2010
  • The support system of a one-meter primary mirror was optimally designed by the finite element method. For the analysis, the 3D solid finite element model was estabilished by the finite element software. Two kinds of lateral support structures were compared, then the axial support-ring radius, lateral support form and the lateral support position were determined after the optimum design. The mirror deformations with different pitching angles were calculated, and the maximum Root-mean-square(RMS) value of the surface deformation is 5.3 nm. Obtained results satisfy the design requirement and show that the support system is reasonable and feasible. This optimal method of finite element and calculated process are independence on the diameter and thickness of the primary mirror, and are also useful for the designs of primary mirrors in the planar form, spherical form and allotype form.

     

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