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Optimal Design of Cylindrically Laminated Composite Shells for Strength

강도를 고려한 원통형 복합재료 구조물의 최적설계

  • Kim, Chang-Wan (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Hwang, Un-Bong (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Park, Hyeon-Cheol (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Shin, Dae-Sik (Agency for Defense Development) ;
  • Park, Ui-Dong (Agency for Defense Development)
  • Published : 1996.03.01

Abstract

An optimization procedure is proposed for the design of cylindrically laminated composite shell having midplane symmetry and subjected to axial force, torsion and internal pressure. Tsai-Wu and Tsai-Hill failure criteria are taken as objective functions. The stacking sequence represents the design variable. The optimal design formulation based on state space method is adopted and solution proccedure is described with the emphasis on the method of calculations of the design sensitivities. A gradient projection algorithm is employed for the optimization process. Numerical results are presented for the several test problems.

Keywords

Optimal Design;Stacking Sequence;Design Sentivity;State Space Method;Failure Index