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A Development of Two-Point Reciprocal Quadratic Approximation Mehtod for Configuration Optimization of Discrete Structures

불연속구조물의 배치최적설계를 위한 이점역이차근사법의 개발

  • 박영선 (대우자동차(주) 기술연구소) ;
  • 임재문 (한양대학교 대학원 기계설계학과) ;
  • 양철호 (기아자동차(주) 기술연구소) ;
  • 박경진 (한양대학교 기계공학과)
  • Published : 1996.12.01

Abstract

The configuration optimization is a structural optimization method which includes the coordinates of a structure as well as the sectional properties in the design variable set. Effective reduction of the weight of discrete structures can be obrained by changing the geometry while satisfying stress, Ei;er bickling, displacement, and frequency constraints, etc. However, the nonlinearity due to the configuration variables may cause the difficulties of the convergence and expensive computational cost. An efficient approximation method for the configuration optimization has been developed to overcome the difficulties. The method approximates the constraint functions based onthe second-order Taylor series expansion with reciprocal design variables. The Hessian matrix is approzimated from the information on previous design points. The developed algotithms are coded and the examples are solved.

Keywords

Configuration Optimization;Structural Optimization;Two-Point Reciprocal Quadratic Approximation Method