Evaluating the Parameters Affecting the Distribution of Thickness in Cup Deep drawing of ST14 Sheet
Abstract
Production of cylindrical cups is one of the most important deep drawing processes. However, the process has some noticeable defects such as wrinkling, tearing, spring back, and
thickness variation in different locations of produced cups. In this research the parameters of interest are punch/die shoulder radius, blank holder force, friction between sheet and die/punch/holder. To make the simulations ABAQUS finite element software, and to study the effects of these parameters, Taguchi method are used. To verify the study’s simulation results, experimental tests have been carried out. Studied locations include flange, die radius shoulder, wall
thickness, punch radius shoulder, punch radius, the bottom of the cups. Also By applying Analysis of Variance (ANOVA) method the significance and magnitude of each parameter in determining the thickness in previously given locations are calculated in percentage. Finally, to get the initial blank thickness in different locations the optimum level of parameters is calculated.
thickness variation in different locations of produced cups. In this research the parameters of interest are punch/die shoulder radius, blank holder force, friction between sheet and die/punch/holder. To make the simulations ABAQUS finite element software, and to study the effects of these parameters, Taguchi method are used. To verify the study’s simulation results, experimental tests have been carried out. Studied locations include flange, die radius shoulder, wall
thickness, punch radius shoulder, punch radius, the bottom of the cups. Also By applying Analysis of Variance (ANOVA) method the significance and magnitude of each parameter in determining the thickness in previously given locations are calculated in percentage. Finally, to get the initial blank thickness in different locations the optimum level of parameters is calculated.
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