Electromechanical coupling modified gear rigidity and transient dynamics calculation method

The invention discloses an electromechanical coupling modified gear rigidity and transient dynamics calculation method. The method comprises the following specific steps: (1) establishing a small-modulus modified gear tooth profile equation; (2) according to the tooth profile equation, utilizing a material potential energy method to calculate the healthy modified gear rigidity; (3) determining a crack position and a crack form according to the sizes of the dedendum circle and the base circle; (4) substituting the crack form into a potential energy method calculation formula; (5) establishing an electromechanical coupling dynamic model under a transient condition, substituting the healthy gear and the cracked gear into dynamics, and solving vibration displacement; the method has the beneficial effects that the influence mechanism of the sizes of the base circle and the reference circle on the time-varying meshing stiffness is fully considered, the calculation method for the time-varying meshing stiffness of th