A Combined Isotropic, Kinematic And Cross Hardening Model For Magnesium Az31B-H24 Under Non-Linear Strain Loading Path

Abstract

A fully modularized framework was established to combine isotropic, kinematic, and cross hardening behaviors under non-monotonic loading conditions. Three sets of state variables were defined and applied to consider the effects of, a) loading history, b) twinning and de-twinning and c) different pre-strain. Experiments under two types of non-proportional loading conditions were conducted along different orientations, 1) uniaxial compression-tension reversal loading with different amounts of compressive strains, and 2) two-step uniaxial tension, known as cross-loading conditions, with different pre-strains. No apparent cross-hardening effect was observed for this material. The calibrated new hardening model, with an anisotropic CPB06ex2 yield criterion and an eMMC anisotropic fracture model, has been implemented into Abaqus/ Explicit as a user material subroutine (VUMAT). Good correlation was observed between experimental and simulation results.

Publication Date

9-1-2016

Publication Title

Journal of Physics: Conference Series

Volume

734

Issue

3

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/1742-6596/734/3/032129

Socpus ID

84989223410 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84989223410

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