Using of the DEFORM software package to optimize sheet metal forming operations
DOI:
https://doi.org/10.37142/2076-2151/2022-1(51)110Keywords:
stamping, optimization, forming, computer simulation, finite element method, fracture criteria.Abstract
Orliuk M., Pimanov V. Using of the DEFORM software package to optimize sheet metal forming operations
Using only practical recommendations of reference literature while developing of the technology of parts with complex geometry manufacturing and stamping equipment design, does not ensure high-quality parts obtaining and defects absence, since these recommendations cannot consider all the features of deformation in specific conditions. In case of defects emergence during the stamping, developed technological process or existing stamping equipment needs to be improved. A similar problem, related to the material fracture, arose in the process of heavy machine gun body part stamping from a sheet steel blank made of 30CrMnSiA steel. To eliminate defects, the effectiveness of using the DEFORM software package was studied to determine the features of complex solid parts sheet metal forming and stamping process parameters optimization. Stamping process was studied using finite element method computer simulation in DEFORM 3D environment to acquired experimental results confirming. As a computer simulation optimization parameter limit values of Normalized Cockcroft-Latham criteria defined for axisymmetric sheet drawing operations were used. According to the results of the research, negative factors that led to overload of the workpiece material and its destruction in the process of deformation were identified. Obtained results made it possible to optimize the shape of the initial workpiece and the deforming tool. Deforming tool and workpiece geometry improvement was carried out on the condition of Normalized Cockcroft-Latham criteria limit value equal 0,6 defined for axisymmetric sheet drawing operations is not exceeded. The results of the natural experiment proved the relevancy of the accepted assumptions. After making appropriate changes to the geometry of the initial workpiece and the deforming tool, the problem of the defects appearance during stamping was successfully solved.
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