Finite Element Updating Method for High-Precision Space Reflector Model Using Multiobjective Optimization Finite Element Updating Method for High-Precision Space Reflector Model Using Multiobjective Optimization

Access this Article

Author(s)

    • KOGISO Nozomu
    • Department of Aerospace Engineering, Osaka Prefecture University
    • OKABE Takayuki
    • Department of Aerospace Engineering, Osaka Prefecture University
    • SAKAMOTO Hiraku
    • Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology
    • TANAKA Hiroaki
    • Department of Aerospace Engineering, National Defense Academy of Japan

Abstract

This study proposes a finite element updating method using multiobjective optimization to consider multiple experimental conditions for estimating parameters. The method aims to minimize the root-mean-square (RMS) error of the deformation shape between the finite element analysis and experimental results. The proposed method is applied to the bread board model (BBM) of a tensionstabilized space reflector consisting of hoop cables and radial ribs, in which the rib is deformed into the prescribed shape by the cable tensions generated on deployment. The design requirement is to deform the rib into the prescribed shape by applying appropriate tension loads to the radial and hoop cables. Under actual conditions, the deformation shape deviates from the ideal shape because of uncertainties. Therefore, it is necessary to estimate the physical parameters with high accuracy, through a geometrically nonlinear finite element analysis, in order to investigate their effect on the deformation shape. To efficiently estimate the physical parameters, the satisficing trade-offmethod (STOM) is adopted as the multiobjective optimization method. Through numerical examples, the validity of the proposed method is demonstrated by comparing the analytical deformation shapes with experimental results.

Journal

  • TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 14(ists30), Pc_7-Pc_12, 2016

    The Japan Society for Aeronautical and Space Sciences

Codes

  • NII Article ID (NAID)
    130005127020
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1884-0485
  • Data Source
    IR  J-STAGE 
Page Top