60 Excellent Inventions in Metal Forming by A. Erman Tekkaya, Werner Homberg, Alexander Brosius

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By A. Erman Tekkaya, Werner Homberg, Alexander Brosius

60 novel methods in steel forming are awarded and defined intimately. Contributions from stated overseas scientists representing the state-of-art in steel forming open a common view on fresh effects and a transparent view on calls for for brand new learn initiatives.

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Extra resources for 60 Excellent Inventions in Metal Forming

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5. , 2007. On linear transformations of stress tensors for the description of plastic anisotropy. Int. J. Plasticity 23, 876–896. 6. , 1989. Plastic behavior and stretchability of sheet metals. Part I: A yield function for orthotropic sheets under plane stress conditions. Int. J. Plasticity 5, 51–66. 7. , 2005. Linear transformation-based anisotropic yield functions. Int. J. Plasticity 21, 1009–1039. 8. , 2015. Parameter reduction for the Yld2004-18p yield criterion. Int. J. 1007/s12289-0151221-3.

As an example, Fig. 1 represents the two-dimensional yield locus for a ferritic stainless steel sheet sample. The corresponding constitutive relationships were used in FE analyses of the Nakazima spherical punch-stretching test. Figure 2 represents the thickness distribution of the specimen as a function of the distance from the pole of the specimen. This figure illustrates the drastic influence of plastic anisotropy as well as the yield function exponent or, in other words, of the material crystal structure, on the predicted thickness distribution.

Part I: A yield function for orthotropic sheets under plane stress conditions. Int. J. Plasticity 5, 51–66. 7. , 2005. Linear transformation-based anisotropic yield functions. Int. J. Plasticity 21, 1009–1039. 8. , 2015. Parameter reduction for the Yld2004-18p yield criterion. Int. J. 1007/s12289-0151221-3. 9. , 2010. Advances in Anisotropy and Formability. Int. J. Material Forming 3, 165–189. 10. , 2006. Orthotropic yield criterion for hexagonal close packed metals. Int. J. Plasticity 22, 1171–1194.

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