关键词: 车身设计；性能设计；优化流程；拓扑优化；断面和接头优化；参数化模型优化； 多学科优化

Abstract: As the competition in the automobile market is increasingly intensifying, body design is facing severe challenges. In the early design of the body structure platform, it is necessary to consider the body collision, noise, vibration, harshness (NVH) and strength fatigue performance of different models of the platform. With the increasing difficulty of crashworthiness design of body structure, the weight of body increases, and the balance between performance and lightweight design of structure becomes more difficult. In order to cope with the challenges of body development, this paper studies the multi-disciplinary optimization technology of body structure performance, which runs through the simulation optimization drive design in the conceptual design stage of body structure performance integration. It can quickly achieve the performance standard under the premise of minimum weight increase. Based on the model development case of a sport utility vehicle (SUV), the feasibility of this technology is explained, which provides a reference for the later body development.

Key words: Body design; Performance design; Optimize process; Topological optimization; Section and joint optimization; Parametric model optimization; Multidisciplinary optimization