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Structural Design Optimization on the Reduced System Constructed from Large-Scaled Problem

축소시스템과 영역분할 기법과의 연동을 통한 대형구조물 설계 기법 연구

  • 김현기 (서울대학교 대학원 기계항공공학부) ;
  • 조맹효 (서울대학교 기계항공공학부)
  • Published : 2006.09.01

Abstract

In the present study, sizing and shape optimizations are performed based on the reduced system of large-scaled problem. In the analysis part to achieve efficiency and reliability of computation, two-level condensation scheme is applied. In the construction of reduced system of large scaled problems, it is much more efficient to use sub-domain method. Thus, in the present paper, two-level reduction method combined with sub-domain method is employed. Once the reduced system is constructed, it is straightforward to obtain design sensitivities from the analysis results of the reduced system We use semi-analytic method to obtain design sensitivities. Performance of the efficiency and reliability of the present reduction method in the structural optimization problem is demonstrated through the numerical examples. The present framework of reduction method should serve as a fast and reliable design tool in analysis and design of large-scaled dynamic problems.

Keywords

Size and Shape Optimization;Design Sensitivity;Two-Level Condensation Scheme;Sub-Domain Method;Reduced System

References

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