Blank Shape Optimization in Deep Drawing with Combined Restraint

Abstract:

One of the methods for increasing the degree of deformation in the deep drawing of the cylindrical parts is the method with the combined restraint. In this process, due to the high degree of deformation, the earing is pronounced and affects the quality of the final part. The paper focuses in optimization the blank shape in this process applying a method which combines a mathematical relation with the results of the numerical simulation. The mathematical relation connects the radii of the initial blank at the different angles with the sizes of the part heights at different angles. The numerical simulation using FEM was used for the heights determination at the main anisotropy directions considering different initial blank dimensions. An experimental work was done for certify the numerical results. The results confirmed that the optimization of the blank shape in deep drawing with the combined restraint is a key for improving the deformation process, for reduction the earing and for minimizing the material consumption.

• Periodical: Applied Mechanics and Materials (Volume 371)
• Pages: 178-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.371.178
• Online since: August 2013
• Authors: Viorel Paunoiu, Virgil Teodor
• Keywords: Anisotropy, Deep Drawing, Earing, Finite Element Method (FEM), Numerical Simulation, Sheet Metal Forming

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