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Topology Design of a Structure with a Specified Eigenfrequency

주어진 고유주파수를 갖는 구조물의 위상최적설계

  • 이종환 (현대중공업 선박해양연구소 구조연구실) ;
  • 민승재 (한양대학교 기계공학부)
  • Published : 2003.07.01

Abstract

Topology optimization is applied to determine the layout of a structural component with a specified frequency by minimizing the difference between the specified structural frequency and a given frequency. The homogenization design method is employed and the topology design problem is solved by the optimality criteria method. The value of a weighting factor in the optimality criteria plays an important role in this topology design problem. The modified optimality criteria method approximated by using the binomial expansion is suggested to determine the suitable value of the weighting factor, which makes convergence stable. If a given frequency is set as an excited frequency, it is possible to avoid resonance by moving away the specified structural frequency from the given frequency. The results of several test problems are compared with previous works and show the validity of the proposed algorithm.

Keywords

Topology Optimization;Eigenfrequency;Homogenization Design Method;Optimality Criteria Method

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