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| Optimal design of car body beam section based on NSGA-Ⅲ under complex engineering constraints |
| Received:December 23, 2020 Revised:February 20, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20201223001 |
| KeyWord:thin-walled beam conceptual design structure optimization NSGA-Ⅲ |
| Author | Institution |
| 张鸣鹤 |
大连理工大学 汽车工程学院, 大连 |
| 熊志华 |
大连理工大学 汽车工程学院, 大连 |
| 侯文彬 |
大连理工大学 汽车工程学院, 大连 |
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| Abstract: |
| In the car conceptual design stage of cars, the car body is often simplified by thin-walled beams, and its cross-section has a direct effect on the rigidity of the car body in white.The cross-section of multi-chamber thin-walled beams is extremely complex.In the design process, it is necessary not only to consider its mechanical properties, but also to meet various constraints of the manufacturing process.This paper fully considers the engineering constraints such as assemblability and manufacturability in the design of the car body section, and proposes a special beam section shape control method to be compatible with multiple engineering constraints.A cross-section multi-objective optimization model is defined, and NSGA-IIIis used as a high-dimensional multi-objective optimization algorithm to optimize parameters such as the section moment of inertia and torsion constant.Based on this method, the corresponding software modules are implemented.Finally, an example is used to prove the effectiveness of the method. |
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