Open Access
Table 5
Responses of the optimized structure.
| 1st-order frequency (Hz) | Displacement (mm) | Mass (kg) | |||||
|---|---|---|---|---|---|---|---|
| Up1 | Up2 | Up3 | Up4 | Umax | |||
| Baseline | 141.24 | 0.71 | 2.08 | 3.02 | 0.50 | 3.58 | 4.51 |
| Low_init | 141.60 | 0.93 | 2.24 | 3.41 | 0.68 | 4.46 | 3.58 |
| Base_init | 141.12 | 0.93 | 2.29 | 3.45 | 0.68 | 4.47 | 3.55 |
| Up_init | 141.26 | 0.94 | 2.25 | 3.42 | 0.68 | 4.50 | 3.54 |
| Improvement (%) | –0.08 | –31.30 | –10.15 | –14.43 | –35.1 | –25.59 | 21.22 |
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