Research Article
Size and Topology Optimization for Trusses with Discrete Design Variables by Improved Firefly Algorithm
Table 9
Optimum solutions of the 72-bar spatial truss for the different algorithms.
| | Element group | Optimal cross-sectional areas (mm2) | | FA | IAFA | RWFA | IFA |
| | (1) | 2180.641 | 2180.641 | 1283.868 | 1283.868 | | (2) | 729.031 | 252.258 | 363.225 | 363.225 | | (3) | 729.031 | 0.000 | 0.000 | 0.000 | | (4) | 729.031 | 0.000 | 0.000 | 0.000 | | (5) | 494.193 | 792.256 | 792.256 | 792.256 | | (6) | 161.290 | 285.161 | 285.161 | 285.161 | | (7) | 729.031 | 0.000 | 0.000 | 0.000 | | (8) | 729.031 | 0.000 | 0.000 | 0.000 | | (9) | 729.031 | 729.031 | 363.225 | 363.225 | | (10) | 198.064 | 285.161 | 363.225 | 363.225 | | (11) | 0.000 | 729.031 | 0.000 | 0.000 | | (12) | 729.031 | 729.031 | 71.613 | 71.613 | | (13) | 71.613 | 90.968 | 126.451 | 126.451 | | (14) | 729.031 | 363.225 | 363.225 | 363.225 | | (15) | 729.031 | 729.031 | 285.161 | 285.161 | | (16) | 729.031 | 161.290 | 363.225 | 363.225 | | Weight (kg) | 197.80 | 220.84 | 167.04 | 167.04 | | Number of analyses | 12635 | 14875 | 14280 | 9520 |
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