System Dynamics Analysis Based on Steel Tube Frame

The paper focuses on the chassis of the Dongfeng HUAT Team's 11th generation car and conducts a comprehensive study on its vibration characteristics using the finite element method. Firstly, a finite element model of the chassis structure is constructed using CATIA. Subsequently, the modal analysis is performed by applying ANSYS technology to calculate the finite element analysis results. Furthermore, the dynamic characteristics of the chassis are explored in greater depth by investigating the impact of engine vibrations on the chassis structure and examining the interaction between the chassis design features and the race car's drive system. Finally, random vibration analysis is conducted using ANSYS to further validate the theoretical and simulation errors. This research provides valuable insights and a solid foundation for effectively addressing mechanical vibration issues in tubular chassis systems. The findings have significant theoretical significance and practical implications.