한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제25권6호
  • /
  • Pages.561-571
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  • 2022
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  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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열응력 제한조건이 고려된 위상최적화 기법을 이용한 광학 미러 플렉셔 마운트 최적설계

Optimal Design of the Flexure Mount for Optical Mirror Using Topology Optimization Considering Thermal Stress Constraint

  • 이경호 (충남대학교 대학원 기계공학과) ;
  • 이중석 (충남대학교 기계공학부)
  • Kyoungho, Lee (Department of Mechanical Engineering, Graduate School, Chungnam National University) ;
  • Joong Seok, Lee (School of Mechanical Engineering, Chungnam National University)
  • 투고 : 2022.07.26
  • 심사 : 2022.10.28
  • 발행 : 2022.12.05
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초록

An optical mirror assembly is an opto-mechanically coupled system as the optical and mechanical behaviors interact. In the assembly, a flexure mount attached to an optical mirror should be flexible in the radial direction, but rigid for the remaining degrees of freedom for supporting the mirror rigidly and suppressing the wavefront error of the optical mirror. This work presents an optimal design of the flexure mount using topology optimization with thermal stress constraint. By simplifying the optical mirror assembly into finite shell elements, topology optimization model was built for efficient design and good machinability. The stress at the boundary between the optical mirror and the mount together with the first natural frequency were applied as constraints for the optimization problem, while the objective function was set to minimize the strain energy. As a result, we obtained the optimal design of the flexure mount yielding the improved wavefront error, proper rigidity, and machinability.

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참고문헌

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