Evaluation method for visual jitter of weak part of metal plate when vehicle door is closed

The invention provides a method for evaluating visibility jitter of a weak part of a metal plate during vehicle door closing, which comprises the following steps of: simulating to obtain a digital model of a vehicle door needing to be evaluated, and performing modal simulation of the vehicle door; obtaining the modal frequency and the vibration mode of the first-order bulge of the vehicle door, and taking the maximum motion point of the vibration mode, namely the weak part of the metal plate; testing vibration spectrum data of the weak part of the metal plate, finding out a corresponding frequency close to a first-order convex mode from the vibration spectrum, and then finding out a peak acceleration value corresponding to the frequency; subjectively scoring a plurality of cars and testing the acceleration value of a weak part when the car doors are closed; establishing a linear function relationship between the subjective score and the acceleration value of the door-closing weak part; and determining an obje