Crack straight gear meshing rigidity evaluation method and system, storage medium and terminal equipment

The invention discloses a crack straight gear meshing rigidity evaluation method and system, a storage medium and terminal equipment, and the method comprises the steps: building an accurate tooth root transition curve equation, an involute tooth profile starting circle radius equation, a tooth root circle radius equation and a base circle radius equation, determining the Hertz contact rigidity through a Hertz contact theory, and calculating the tooth base rigidity; combining the stress distribution gradient and a finite element method to fit the reduction degree of the crack on the effective tooth thickness of the gear tooth, and determining the effective tooth thickness of the crack gear tooth; determining the sectional inertia moment of the effective tooth thickness and the sectional area of the effective tooth thickness according to the obtained effective tooth thickness, and further deducing the bending rigidity, the shearing rigidity and the axial compression rigidity in the meshing process; and compreh