Abstract
The lower stiffener for an automobile bumper has a problem in that deformation occurs during injection molding. This degrades the impact absorption properties of the stiffener. Therefore, research on reducing the deformation during the molding process is required. In this study, the filling time, maximum pressure, maximum mold clamping force, and solidification time of the injection molding process were analyzed as the basis for the research. To analyze the cause of deformation and to improve the quality of the parts, a series of design changes and analyses were performed. As a result, an excellent design was derived that reduces deformation compared to the preliminary design.
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