Vehicle frame quality attribute quantification method and system

The invention provides a vehicle frame quality attribute quantification method and system, and the method comprises the steps: obtaining the actual mass of a vehicle frame in a current actual vehicle, and calculating the bending rigidity and torsional rigidity corresponding to the vehicle frame based on a preset algorithm; the whole vehicle unsprung mass corresponding to the current actual vehicle is obtained according to the actual mass of the vehicle frame, and the whole vehicle sprung mass corresponding to the current actual vehicle is calculated based on the full-load total mass and the whole vehicle unsprung mass corresponding to the current actual vehicle; and a corresponding frame quality evaluation coefficient is constructed based on the actual quality, the bending rigidity, the torsional rigidity and the sprung quality of the whole vehicle, and the quality attribute of the frame is judged according to the frame quality evaluation coefficient. By means of the method, subjective judgment of the vehicle