Method and system for testing insulation performance failure of bushing under seismic action

The invention discloses a method and system for testing insulation performance failure of a lower sleeve for seismic motion, and the method comprises the steps: 1, collecting a seismic motion sample; step 2, establishing a sleeve finite element model under the condition of considering sleeve variables, sampling the variables of the sleeve finite element model, generating sleeve model parameter samples with the same number as the seismic oscillation samples, and setting the parameter samples of the sleeve model into the sleeve finite element model; 3, setting a damage index and a damage state of the insulation performance failure of the sleeve, and performing finite element simulation analysis on the finite element model of the sleeve containing the variables by considering the uncertainty of the shock resistance of the damage index to obtain a numerical value of the damage index of the insulation performance failure of the sleeve; and step 4, performing sleeve insulation performance failure analysis by using