Composite Materials Research Progress

3.5
3
2.5
2
1.5
1
Optimization of Laminated Composite Structures… 93
laminate 1 :[(0/90/45/-45)2]S
laminate 2 : [0/90/45/-45]4
Figure 8.17. Geometry and initial stacking sequence of the stiffened panel.
Relative compliance
0.5
0 10 20 30
3
2.5
2
1.5
1
0.5
0 5 10 15
2
1.8
1.6
1.4
1.2
1
GCMMA
Relative mass
0.8
0 10 20 30
1.8
1.6
1.4
1.2
1
SAM
0.8
0 5 10 15
60
50
40
30
20
10
Number of violations
0
0 10 20 30
Relative compliance Relative mass Number of violations
2
60
Figure 8.18. Convergence history for GCMMA and SAM.
50
40
30
20
10
0
0 5 10 15