Affiliation:
1. Guilin University of Electronic Technology
Abstract
Constitutive equation for metal plastic forming reflects the relationships among the parameters of stress, strain and strain rate. The accuracy of constitutive equation is a key factor in the research of material mechanism, finite element simulation accuracy and forming failure. The commonly used establishment methods of constitutive equation are summarized. Those methods include experiment method, theory analysis method, neural network method, regression method and inverse finite element method. The advantages and disadvantages of those methods are discussed, and application scope of those methods is summarized simultaneously.
Publisher
Trans Tech Publications, Ltd.
Reference9 articles.
1. W. J. Zhao, Y. L. Zhang, and Y. Ding, Constitutive relationship of Ti6Al4V alloy during superplastic deformation by linear regression method, J. Mater. Metall. 7 (2008) 201-205.
2. M. Zhan, H. F Du, and J. Liu, A method for establishing the plastic constitutive relationship of the weld bead and heat-affected zone of welded tubes based on the rule of mixtures and a microhardness test, Mater. Sci. Eng. 527 (2010) 2864-2874.
3. L. F. Yang, C. Guo, Determination of stress–strain relationship of tubular material with hydraulic bulge test, Thin-Walled Structures. 46 (2008) 147-154.
4. L. Lăzărescu, D. S. Comsa, and I. Nicodim, Characterization of plastic behavior of sheet metals by hydraulic bulge test, Trans. Nonferrous Met. Soc. china. 22 (2012) 275-297.
5. G. Yan, H. Yang, and M. Zhan, A new method to determine plastic constitutive parameters of tube and its applications, Mater. Sci. Technol. 17 (2009) 297-300.