MATEC Web Conf.
Volume 80, 2016NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming Processes
|Number of page(s)||5|
|Section||MS5: Advanced anisotropic constitutive equations for forming processes simulation|
|Published online||24 October 2016|
Fracture prediction with a material model based on stress-rate dependency related with non-associated flow rule
1 Keio University, Graduate School of Science and Technology, 2238522, Hiyoshi 3-14-1, Kohoku-ku, Yokohama, Japan
2 The University of Tokyo, Institute of Industrial Science, 1538505, Komaba 4-6-1, Meguro-ku, Tokyo, Japan
3 M & M Research, 1500001, Jingumae 4-15-3, Shibuya-ku, Tokyo, Japan
a Corresponding author: email@example.com
In this paper, a novel material model for anisotropic metals is proposed. Fracture prediction using the proposed model is based on stress-rate dependency related with non-associated flow rule in which an arbitrary order function for both the yield and plastic potential functions are used. In addition, an explicit formulation of the equivalent plastic strain increment that is plastic-work-conjugated with the equivalent stress is also presented. Then, fracture prediction analyses are conducted by using the 3D local bifurcation theory.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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