Structural Modal Analysis of a New Twin-Rotor Piston Engine

With the finite analysis software ANSYS, the key parts and the whole structure of a new twin-rotor piston engine is analyzed, and then the structural modal parameters are obtained by using finite element method in the cases of free modality. Furthermore, the natural vibration characteristics of the twin-rotor piston engine are analyzed, as well as the influence of structural parameters on vibration transfer and radiation noise. The research is expected to lay a foundation for the vibration reduction design of the twin-rotor piston engine.