Consistent parameters for plastic anisotropy of sheet metal (Part 2-plane-strain and compression tests)

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(E. Cueto & F. Chinesta, Eds.) 10th ESAFORM Conference on Material Forming, Pts A and B. 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA: AMER INST PHYSICS (2007) .

ECuetoFChinestaAMER INST PHYSICS

Abstract

To include the case of deep-drawing (without blank-holder), states of combined tensile and compressive stress have to be considered whereby it is necessary to define two more anisotropy parameters. They are called “tensile-compressive anisotropy” in rolling and transverse direction. Finally, a new consistent system of “true” anisotropy parameters is presented. They are defined as the difference between the experimentally determined anisotropy parameters and the values which would be obtained in case of isotropy. They all are zero for isotropic materials.



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