OPTIMAL-DESIGN OF HYBRID LAMINATED COMPOSITE PLATES WITH DYNAMIC AND STATIC CONSTRAINTS

Optimization procedures are presented that consider the static and dyn amic characteristic constraints for laminated composite plates and hyb rid laminated composite plates subject to a concentrated load on the c enter of the plate. The design variables adopted are ply angle or ply thickness. Considered constraints are deflection, natural frequency an d specific damping capacity. Using a recursive linear programming meth od, nonlinear optimization problems are solyed, and by introducing the design scaling factor, the number of iterations is reduced significan tly. Relating interactive optimization procedures with the finite elem ent method analysis, various hybrid composite plates with arbitrary bo undary conditions can be designed optimally. In the optimization proce dure, verification of analysis and design of the laminated composite p lates are compared with a previous paper. Various design results are p resented on laminated composite plates and hybrid laminated composite plates.