Research Article
Application of Improved Particle Swarm Optimization in Vehicle Crashworthiness
Table 4
Comparison of optimization results.
(a) Design variable |
| ā | t1/mm | t2/mm | t3/mm | t4/mm | t5/mm | t6/mm | t7/mm | t8/mm |
| Original finite element model | 1.10 | 1.25 | 1.10 | 1.10 | 1.65 | 1.63 | 0.89 | 0.70 |
| Particle swarm optimization | 1.20 | 1.00 | 1.30 | 0.90 | 1.10 | 1.30 | 0.92 | 0.51 |
| Improved particle swarm optimization | 1.15 | 1.02 | 1.23 | 0.92 | 0.96 | 1.30 | 0.90 | 0.49 |
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(b) Collision target response |
| ā | /(m/s2) | D1/mm | D2/mm | D3/mm | m/kg |
| Original finite element model | 57.60 | 97.60 | 260.60 | 268.40 | 716.85 |
| Particle swarm optimization | 53.20 | 90.10 | 252.40 | 254.20 | 710.61 |
| Improved particle swarm optimization | 47.90 | 84.70 | 241.60 | 242.10 | 710.40 |
| Particle swarm optimization percentage | -7.64% | -7.68% | -3.15% | -5.29% | -0.87% |
| Improved particle swarm optimization percentage | -16.84% | -13.22% | -7.29% | -9.80% | -0.90% |
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