会议论文详细信息
2nd International Conference on Mathematical Modeling in Physical Sciences 2013
Multilevel models of polycrystals using crystal plasticity: investigation of hardening laws influence on the macro effects of cyclic loading
物理学;数学
Volegov, P.S.^1 ; Trusov, P.V.^1 ; Shveykin, A.I.^1
Perm National Research Polytechnic University, Mathematical Modeling of Systems and Processes, Komsomolsky ave. 29, Perm, Russia^1
关键词: Crystal plasticity;    Hardening laws;    Inelastic deformation;    Multilevel model;    Physically based;    Polycrystalline samples;    Reverse loading;    Structure evolution;   
Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/490/1/012037/pdf
DOI  :  10.1088/1742-6596/490/1/012037
来源: IOP
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【 摘 要 】

The problem of constructing a physically based hardening laws of mono- and polycrystalline samples in multi-level theories using crystal plasticity is considered, these hardening laws should allow describing the process of the defect structure evolution of the material due to the intensive inelastic deformations. It is also should be applicable to the description of simple and cyclic loading. An approach to the construction of a general and a particular form of hardening law is proposed, which takes into account the interaction of full and split dislocations with each other, forming and destruction of dislocation barriers, annihilation of dislocations during reverse loading. Using the obtained hardening law, the known experimental effects of simple and cyclic loading are described.

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