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An anisotropic elastic-plastic constitutive model for single and polycrystalline metals. II: Experiments and predictions concerning thin-walled tubular OFHC copper. (English) Zbl 0917.73020

Summary: Predictions based on an anisotropic elastic-plastic constitutive model proposed in the first part of this paper [see the authors, ibid. 12, No. 2, 147-162 (1996; Zbl 0858.73023)] are compared with the experimental stress and strain data on OHFC copper first under torsion to about 13% and partial unloading, and then under tension-torsion to about 10% along eight different loading paths. This paper also describes the deformation and stress of the thin-walled tubular specimen under finite deformation, the numerical implementation of the model, and the detailed procedure for determining the material parameters in the model. Finally, the model is extended to a general respresentation of the multiple directors, and the elastic-viscoplastic extension of the constitutive model is considered.

MSC:

74C99 Plastic materials, materials of stress-rate and internal-variable type
74-05 Experimental work for problems pertaining to mechanics of deformable solids
74E10 Anisotropy in solid mechanics
82D25 Statistical mechanics of crystals

Citations:

Zbl 0858.73023
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