Structural Engineering and Mechanics

  • 제31권4호
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  • Pages.393-405
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  • 2009
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Optimization of a telescope movable support structure by means of Volumetric Displacements

  • Ortega, Nestor F. (Departamento de Ingenieria - Universidad Nacional del Sur) ;
  • Robles, Sandra I. (Departamento de Ingenieria - Universidad Nacional del Sur)
  • 투고 : 2007.06.01
  • 심사 : 2009.02.02
  • 발행 : 2009.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

The Purpose of this paper is to show the applicability of a methodology, developed by the authors, with which to perform the mechanical optimization of space truss structures strongly restricted. This methodology use a parameter call "Volumetric Displacement", as the Objective Function of the optimization process. This parameter considers altogether the structure weight and deformation whose effects are opposed. The Finite Element Method is employed to calculate the stress/strain state and the natural frequency of the structure through a structural linear static and natural frequency analysis. In order to show the potentially of this simple methodology, its application on a large diameter telescope structure (10 m) considering the strongly restriction that became of its use, is presented. This methodology, applied in previous works on continuous structures, such as shell roof and fluid storage vessels, is applied in this case to a space truss structure, with the purpose of generalize its applicability to different structural topology. This technique could be useful in the morphology design of deployable and retractable roof structures, whose use has extensively spread in the last years.

키워드

참고문헌

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  1. Structural Optimization of Deploying Structures Composed of Linkages vol.28, pp.3, 2014, https://doi.org/10.1061/(ASCE)CP.1943-5487.0000272
  2. Shape-sizing nested optimization of deployable structures using SQP vol.21, pp.7, 2014, https://doi.org/10.1007/s11771-014-2257-0
  3. The universal scissor component: Optimization of a reconfigurable component for deployable scissor structures vol.48, pp.2, 2016, https://doi.org/10.1080/0305215X.2015.1011151