This paper presents a fully three-dimensional plastic constitutive modeling framework suitable for the prediction of cyclic loading at large number of cycles. It can require only one yield surface and it is motivated by a simple rheological model where a restoration of the kinematic hardening is introduced. The classical kinematic hardening rules are then simply adapted leading to time-dependen...

This numerical investigation of an advanced Gurson–Tvergaard–Needleman(GTN) model is an extension of the original work of Ben Bettaieb et al. (2011). The model hasbeen implemented as a user-defined material model subroutine (VUMAT) in the Abaqus/explicitFE code. The current damage model extends the previous version by integrating the threedamage mechanisms: nucleation, growth an...

In computed tomography (CT), the nonlinear attenuation characteristics of polychromatic X-rays cause beam hardening artifacts in the reconstructed images. State-of-theart methods to correct the beam hardening effect are mostly single material precorrections (e.g. water-precorrection), which are far less efficient when more than one material is present in the field of measurement. The use of tho...

The zona pellucida (ZP) is an extracellular membrane surrounding mammalian oocytes. The so-called zona hardening plays a key role in fertilization process, as it blocks polyspermy, which may also be caused by an increase in the mechanical stiffness of the ZP membrane. However, structural reorganization mechanisms leading to ZP's biomechanical hardening are not fully understood yet. Furthermore,...

This paper is a phenomenological study representing the influence of hardening type on instrumented indentation F-h curve. Spherical and inverse analysis techniques (IAT) are used two metallic materials (DP600 AA2017) investigated. Pure isotropic (Voce) combined (Chaboche 1986) laws adopted for describing plastic behavior studied materials. The loading curve first. Kinematic results in softenin...

The increasing application of aluminum alloy, in combination with the growth complexity components, provides new challenges for numerical modeling sheet materials. material elastic–plasticity constitutive model is most important factor affecting accuracy finite element simulation. mixed hardening can more accurately represent real characteristics plastic deformation process, and property-relate...

Abstract In this work, the phase-field approach to fracture is extended model fatigue failure in high- and low-cycle regime. The energy degradation due repeated externally applied loads introduced as a function of local accumulation variable, which takes structural loading history into account. To end, novel definition variable proposed, allowing analysis at monotonic without interference exten...