Based on the assumption of plane stress, an anisotropic nonlinear kinematic hardening constitutive model has been established according to HILL48 anisotropic yield criterion, non-linear kinematic hardening theory of ARMSTRONG-FREDERICK and plastic flow theory. The corresponding UMAT subroutine of ABAQUS for this constitutive model is compiled by Fortran, in which the backward Euler return mapping algorithm is adopted. A process of sheet metal being pulled through drawbead are simulated using the developed constitutive model and two constitutive models in ABAQUS with isotropic yield criterion and kinematic hardening theory respectively, then corresponding tangential stress-strain cycle curves are received. On comparison, the result of applying the developed constitutive model is closer to the experimental result. The developed elasto-plastic constitutive model is credible, which could be applied to research about the reverse load deformation behavior of sheet metal.
LI Qun
,
XIN Ce
,
JIN Miao
,
ZHANG Qing
. Establishment and Application of an Anisotropic Nonlinear Kinematic Hardening Constitutive Model[J]. Journal of Mechanical Engineering, 2017
, 53(14)
: 159
-164
.
DOI: 10.3901/JME.2017.14.159
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