Paper number 866

OPTIMAL DESIGN OF COMPOSITE THIN-WALLED LAMINATED BEAM BY RANKING

ZHANG ZHEN-YING

State Key Laboratory of Structure of Analysis of Industrial Equipment,
Dalian University of Technology, P. R. China
Nature Science Foundation of Liaoning Province, P. R. China
Beijing Institute of Aeronautical Technology, Beijing, P. R. China
Shenyang Institute of Aeronautical Engineering,
Box 209, Shenyang 110034, P. R. China

Summary

We can get the maximum buckling load of an assigned materials, web thickness, weight, size and structure of composite laminated beam with sublaminates designed by Laminated Ranking Method. By comparing two kind of beams, the buckling load of optimal beam is greater than the quasi-isotropic beam 28.5% by experiments and 28.4% by analysis. That means we can reduce at least one-fourth the weight of the optimal beam by decreasing the number of piles to endure the same buckling load as quasi-isotropic beam. It will greatly increase the velocity and decrease the energy exhausted of industrial products with composite structure, such as airplane, automobile, marine, rail transportation system and so on.

Keywords

optimal design, composite beam, laminated ranking.