Automobile floor rigidity optimization method and device, computer equipment and storage medium

The invention relates to an automobile floor rigidity optimization method and device, computer equipment and a storage medium. The method comprises the steps of obtaining to-be-optimized floor information, determining a to-be-optimized local model based on the to-be-optimized floor information, carrying out free modal analysis based on the to-be-optimized local model, determining an elastic modal frequency, determining an optimization constraint condition based on the elastic modal frequency, and optimizing the to-be-optimized floor on the basis of the optimization constraint condition. And adjusting reinforcing rib parameters of the to-be-optimized local model to obtain optimized floor information. In the process of optimizing the rigidity of the automobile floor, through conversion between local rigidity performance and local modal analysis performance, a region with poor rigidity performance of the floor is subjected to local range interception and converted into modal performance calculation, and then mod