Abstract: Aiming at the new environment-friendly airbag packaging structure, the accuracy of the uniform pressure airbag model is verified by static stiffness test and airbag parameter calibration simulation model. By establishing the clamping simulation model of washing machine, the clamping simulation calculation of the original polystyrene foam and polyethylene air cushion side cushion packaging structure is carried out, and the pressure of the side cushion on the box and the stress distribution of the box are obtained. It is proved that the air cushion packaging is superior to the EPS foam in terms of stiffness and strength, and the feasibility of replacing the side-foam is verified. Further, for the poor appearance of the washing machine box, a scheme of adding a high stiffness material - wood strip is proposed, and its effect is verified by simulation calculation. The clamping simulation method, especially the uniform pressure airbag model method, meets the requirements of enterprises for efficient and accurate simulation of new packaging structures.

Key words: PE air cushion, EPS foam, Clamping condition, Simulation model, Structural stiffness