Abstract

In this paper, optimization procedures are presented considering the static and dynamic constraints for laminated composite plate and hybrid laminated composite plate subject to concentrated load on center of the plates. Design variables for this problem are ply angle or ply thickness. Deflection, natural frequency and specific damping capacity are considered as constraints. Using a recursive linear programming method, the nonlinear optimization problems are solved. By introducing the design scaling factor, the number of iterations is reduced significantly. Composite plates could be designed optimally combined with FEM analysis under various conditions. In the optimization procedure, verification for both analysis and design of the laminated composite plates are compared with the results of the others. Various design results are presented for the laminated composite plates and hybrid laminated composite plates.

본 연구에서는 Kam과 Chang의 연구와 같이 판의 최소 처짐, 판의 최대 모달 에너지 감쇠비 및 최대 고유 진동수를 설계제한 조건으로 택하고 Watkins와 Morris가 사용한 순환 선형 계획법을 이용하여 혼합 적층 복합 재료판의 최적설계를 수행하였다.

Keywords

• Optimal Design;
• Hybrid Laminated;
• Plate;
• Recursive Linear Programming;
• Multicriteria Objective function Optim-ization;
• Specific Damping Capacity;
• Model Strain Energy;
• Finite Element Method

• 최적설계;
• 혼합적층;
• 판;
• 순환선형계획법;
• 다목적 함수 최적화;
• 모달 에너지 감쇠비;
• 모달 변형 에너지;
• 유한요소법;