Abstract: The deformation of the refrigerator door will not only increase the production failure rate, but also increase the production cost and reduce the production efficiency. For this reason, the method of adding strengthening iron in the door is usually used to reduce the deformation. Taking the foamed refrigerator door as the research object, and uses CAE simulation to study the influence of the position and shape of the reinforced iron on the deformation of the door. The effectiveness is evaluated by the amount of deformation. The research results show that adding U-shaped reinforcing iron to both the door liner and the panel can reduce the overall deformation from 11.4 mm to 6.04 mm, and the frame deformation from 7.74 mm to 4.49 mm; while increasing the groove has the worst effect on reducing the deformation of the door. Therefore, in the initial stage of the refrigerator door design, strengthening iron should be installed in the door liner and the panel to reduce the deformation of the door.

Key words: Refrigerator door, Deformation, CAE