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Volume 44 Issue 1
Jan.  2022
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WANG Shang, ZHANG Xingxiang, SHA Wei, ZHU Junqing. Topology Optimization Design and Analysis of an Integrated Aluminum Alloy Mirror[J]. Infrared Technology , 2022, 44(1): 61-65.
Citation: WANG Shang, ZHANG Xingxiang, SHA Wei, ZHU Junqing. Topology Optimization Design and Analysis of an Integrated Aluminum Alloy Mirror[J]. Infrared Technology , 2022, 44(1): 61-65.
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Topology Optimization Design and Analysis of an Integrated Aluminum Alloy Mirror

  • 1.

    Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

  • 2.

    University of Chinese Academy of Sciences, Beijing 100049, China

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  • Received Date: December 12, 2020
  • Revised Date: February 24, 2021
    Graphical Abstract
    • Abstract
  • Topology optimization design was conducted for an integrated aluminum alloy mirror with a diameter of 300 mm. Under the self-weight load along the optical axis of the mirror, the global flexibility was considered as a constraint, and the minimum volume of the mirror was considered as an objective for iterative optimization to obtain a topology optimization model. According to the results, a solid model was established, and its parameters were optimized. Finally, an integrated mirror structure with a total mass of 2.08 kg, root mean square of 5.9 nm, and lightweight ratio of 70% was obtained. Through comparisons to a contrast structure combined with a parameter optimization process, the validity of the topological structure features was determined, and the support characteristics were analyzed. A support structure consisting of a central hexagon and semi-closed structure contributes significantly to the improvement of surface shape accuracy under the conditions of self-weight. There is an optimal supporting position for the central hexagon structure, where the ratio of height to diameter of the regular hexagon is 0.26.
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    • References (12)
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