Multi-disciplinary optimisation for front auto body based on multiple optimisation methods

In order to improve the performance of the front autobody, multiple optimisation methods are adopted in different stages. Firstly, topology optimisation is made under the combination of multiple load cases. Secondly, size optimisation is done for the original design under multiple load cases. After these two optimisations, the first optimisation stage is completed. Then, based on the first modification, crashworthiness optimisation is carried out by using Kriging surrogate model, which means the second stage optimisation. The final results derived after two stage modifications indicate that combining multiple optimisation methods and balancing each target are effective to realise multi-disciplinary optimisation.