Abstract: The deformation of the refrigerator door has always been a hot topic in the research of various refrigerator manufacturers. The structure of the refrigerator door is diverse and complex. The deformation of the refrigerator is not effectively solved under the constraints of material selection and production cost. In view of the refrigerator door body and its key components, a structural optimization design method based on multi field strength analysis model is proposed in this paper. Firstly, based on the experiment and simulation data of the refrigerator door, the basic strategy of the door strength optimization is put forward. Secondly, the structure characteristics of the key parts - the door trim bar are analyzed. The frame stiffness model is constructed based on the section structure characteristics of the refrigerator door trim section. At the same time, the maximum bending section coefficient of the section of the door trim section is analyzed, and the section coefficient analysis model is constructed. Based on the model, the optimal size distribution of the door trim section is analyzed, so as to optimize the structure of the door trim and enhance the deformation resistance of the door trim. Finally, through a certain type of door model and simulation analysis, the feasibility and effectiveness of the proposed analytical model and optimization design method are verified.

Key words: Door decoration strip, Coefficient of bending section, Moment of inertia, Software simulation