Make use of sensitivity analysis technology of ANSYS to study the main structure parameter which affects spring tube inherent frequency. Get the relation between spring tube inherent frequency and its structure parameter. It provides the theory basis for vibration reduction design and dynamics analysis of spring tube.
Furthermore, the natural vibration characteristics of torpedo thermal 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 torpedo thermal power engine.