Abstract:For complex and numerous trivial problems in most balancing procedures currently in use, rigid rotor for models and common influence coefficient method was used to balance method for rotor dynamic balance, a new rigid rotor balancing method without test weights using the finite element software ANSYS was proposed based on the three point add mass method. Setting up the rotor model by using the threedimensional (3D) modeling software UG, using of the ANSYS Workbench transient dynamics analysis function, the unbalance mass was applied to the rotor according to the principle of three point add mass method, and the simulation results were verified by using rotor test platform. The results show that measured the unbalance response of rotor after add unbalanced mass, amplitude is decreased to 194% of the original amplitude, which can prove the validity and feasibility of this method.