Research Article
Multiobjective Lightweight Optimization Design Method for a Dump Truck Carriage under Multiple Working Conditions
Table 9
Comparison of results before and after multiobjective optimization for multiple working conditions.
| | | Before optimization | After optimization | Integral circle | Change amount (%) |
| | Base plate crossbeam (mm) | 8 | 5.11 | 5 | −37.5 | | Main longitudinal (mm) | 63 | 30.66 | 31 | −50.79 | | Base plate (mm) | 6 | 3.1 | 3 | −50 | | Side panels (mm) | 8 | 5.09 | 5 | −37.5 | | Crossbar (mm) | 6 | 4.07 | 4 | −33.33 | | Longitudinal beam (mm) | 6 | 6.13 | 6 | 0 | | Mass (t) | 2.9 | 1.6836 | 1.6850 | −41.90 | | Stiffness (N·mm−1) | 18400 | 34703.55 | 34700 | 88.59 | | Modal (Hz) | 34.72 | 25.10 | 25.5 | −26.56 | | Full-load strain (mm) | 10.84 | 11.87 | 12.14 | 11.99 | | Full-load stress (MPa) | 287.49 | 313.78 | 321.99 | 32.48 | | 0° strain (mm) | 13.59 | 8.04 | 9.78 | −28.04 | | 0° stress (MPa) | 444.31 | 318.84 | 319.90 | −28.00 |
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