Study of large strain behavior of OFHC copper: The role of polycrystal plasticity model. (July 2016)

• Record Type: Journal Article
• Authors: Guo, X.Q.; Wu, P.D.; Wang, H.; Mao, X.B.; Neale, K.W.
• Is Part Of: International journal of solids and structures. Volume 90(2016)
• Page Start: 12
• Page End: 21
• Publication Date: 2016-07
• Subjects: Crystal plasticity -- Polycrystalline material -- Finite strain -- Elastic-viscoplastic material -- Self-consistent; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2016.04.015
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: The large strain behavior of single-phase OFHC copper under different deformation processes are studied based on various polycrystal plasticity models including the classic Taylor-type model and various popular self-consistent models. The models are evaluated by comparing the predictions for the evolution of crystallographic texture and the stress–strain response in uniaxial compression and tension, plane strain compression, and simple shear against corresponding experiments. It is found that while the Taylor-type model is in reasonable first-order agreement with the experiments for the evolution of texture and the overall stress–strain response, the self-consistent models with grain interaction stiffness halfway between those of the limiting secant (stiff) and tangent (compliant) approximations give better results.