We analyze the initiation and development of a shear band in a thermo-elasto-viscoplastic body deformed in simple shear by tangential velocity and heat flux prescribed at the outer bounding surfaces. Unlike previous studies no defect is introduced to initiate a shear band. The prescribed heat flux acts as a defect, and the shear band initiation time depends upon it. 2005 Elsevier Ltd. All right...

An elasto-viscoplastic constitutive model was previously developed and successfully used to describe the anisotropic time-dependent response of short fiber reinforced thermoplastics. It is demonstrated that when it applied systems with a higher level anisotropy, apparent anisotropy rate-dependent yield stress deviates from Hill parameters are define it. This becomes more if increased. The origi...

S U M M A R Y Many unresolved questions in geodynamics revolve around the physical behaviour of the two-phase system of a silicate melt percolating through and interacting with a tectonically deforming host rock. Well-accepted equations exist to describe the physics of such systems and several previous studies have successfully implemented various forms of these equations in numerical models. T...

The problems of extension and shear behavior of structural elements made of carbon steel and subjected to large thermomechanical loads are investigated. The analysis is based on nonlinear geometric and constitutive relations, and is expressed in a rate form. The materiai constitutive eqtiations arc capab!e of reproducing all nonisothermal, elasto-viscoplastic characteristics. The results of the...

A reliability-based design for the improvement of earth-fill dams is created in this study, and the effect of the improvement of the embankment is evaluated for the safety of the embankment against earthquakes. An inclined core is considered here as the means of improvement for the earth-fill embankment. To evaluate the stability of earth-fill dams, the elasto-viscoplastic finite element method...

To model the engineering performance of components made polyvinylidene fluoride (PVDF), 3D elasto-viscoplastic Eindhoven glassy polymer (EGP) is extended to describe rate-dependent behavior PVDF. Careful analysis intrinsic PVDF revealed that postyield compressive response shows a strain rate-dependence evolves with increasing deformation. The extension constitutive captures deformation-dependen...