To predict of appearance and disappearance of yield drop effects with regard to different
dynamics, temperatures or other factors, the wide spectrum of the initial plastic stage of …

The constitutive models at high loading rates are usually investigated by introducing
additional and empirical rate-dependent components into classical models initially …

Relaxation experiments for metallic materials and solid polymers have exhibited nonlinear
dependence of stress relaxation on prior loading rate; the relaxed stress associated with the …

In the paper, a new phenomenological interpretation of some of the principal temporal
effects of high-rate plastic deformation of metals from a united viewpoint is represented. A …

The paper proposes an incremental relaxation plasticity (IRP) model for predicting possible
instabilities and overall behavior of flow curves under dynamic loads. Compared to its …

Constitutive equations of cyclic strain and stress softening for materials with low internal
stress levels are derived from the rate theory. The study shows that over the high stress and …

Plastic deformation of metals and polymethylmethacrylate under the action of dynamic load
is analyzed based on the relaxation model of plastic deformation. The parameters of the …

It is shown that in certain materials plastic instabilities of different types may be traced back
to the same physical mechanism. Depending on experimental conditions, transitions …

Stress relaxation test is widely used to estimate activation parameters during plastic
deformation. The one-dimensional theoretical models used to predict the stress relaxation …

The variation of tensile yield stress at a constant strain rate as a function of temperature for
well-annealed pure metals show, with increasing temperatures, a rather sharp drop in yield …