A dualdisk rotor system with initial shaft bending failure was established through SolidWorks, and the established 3D model was imported into ANSYS Workbench for modal and transient analysis. The first 3 order modes were obtained through modal analysis,the results showed that the radial displacement of the crankshaft increased with the increase of rotational speed. Based on the firstorder natural frequency, several different rotation frequencies were selected near the firstorder natural frequency, and the transient analysis was used to obtain the dualdisk rotor system time domain diagrams at different rotation frequencies. Corresponding experiments were completed through the mechanical failure comprehensive simulation experiment platform to verify the correctness of the simulation results.