Abstract
Abstract The aim of this paper is to present triaxial tension–compression tests and a new triaxial specimen devoted to the study of cyclic plasticity under non-proportional loadings. Because the stress state in the central part of the specimen is not homogeneous, the analysis of the tests need a 3D finite element computation. The constitutive equations used in the simulations have been deduced from complex tension–torsion tests. The comparison between the structural analysis and the experimental results allows to determine the accuracy of the set of constitutive equations and if needed to optimize this set by modifying some hardening rules.
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