The invention belongs to the technical field of automobile structure design, and particularly relates to a large-model-based automobile body structure
generative design method and
system, and the method comprises the steps: building a multi-source
database containing automobile body structure pictures, design variables and mechanical properties; training a vehicle body structure performance evaluation model and generating an evaluation model according to the
database; on the basis of the generated evaluation model, the general
text graph large model is finely adjusted, and a vehicle body structure
generative design large model is obtained; generating a structure picture by using the obtained
large model, and establishing a structure size evaluation model in combination with a
database; inputting design requirements and constraint conditions, generating a vehicle body structure, evaluating the performance and size of the vehicle body structure, and outputting a final result. According to the method, the problems of low efficiency and strong dependence on experience of engineers in an existing automobile concept
design stage are solved, the efficiency and creativity of automobile body structure design are improved, the design period is shortened, manual intervention is reduced, and
automation and intelligence of automobile body structure design are promoted.