Open Access

ARTICLE

Optimum Blank Design Using Modified Sensitivity Approach

by F.R. Biglari¹, A. Agahi¹, O. Nikfarjam², B. M. Dariani¹, K. Nikbin³

1 Mechanical engineering department of Amirkabir University of Technology (Tehran polytechnic)
2 Mechanical engineering department of KNToosi University of Technology
3 Mechanical engineering department of Imperial College, London

Structural Durability & Health Monitoring 2008, 4(1), 47-52. https://doi.org/10.3970/sdhm.2008.004.047

Abstract

A modified sensitivity analysis has been applied to an elastic-plastic finite element analysis 3D blank design in sheet metal forming. In recent literature, the sensitivity method has successfully been applied to several arbitrary shapes. However, in the present paper the sensitivity coefficients are not considered constant during the analysis. The presented approach computes the new coefficients from the two last iterations. This method can produce an initial blank boundary shape that has any arbitrary flange shape. A cup with uniform flange has been studied in detail and results show a faster solution convergence than the published sensitivity method. Experimental tests were conducted to compare with the numerical simulations. The optimum blank shape obtained from the numerical simulations was used during the experimental trials. The results of experimental tests for both square blank and optimum blank were presented.

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Keywords

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