Deformations of the colder regions lithosphere mainly occur in frictional regime. In geodynamic models, plastic deformations are often highly localized (shear bands) and used as proxies for faults. However, capturing generation evolution shear bands models is troublesome. Indeed, mesh dependency lack convergence affect, to some extent, results models. Here we extend most common plasticity imple...

The development of yielded or failure zone due to an engineering construction is a subject of study in different disciplines. In Petroleum engineering, depletion from and injection of gas into a porous rock can cause development of a yield zone around the reservoir. Studying this phenomenon requires elasto-plastic analysis of geomaterial, in this case the porous rocks. In this study, which is a...

the development of yielded or failure zone due to an engineering construction is a subject of study in different disciplines. in petroleum engineering, depletion from and injection of gas into a porous rock can cause development of a yield zone around the reservoir. studying this phenomenon requires elasto-plastic analysis of geomaterial, in this case the porous rocks. in this study, which is a...

In hot forming process, the workpiece undergoes plastic deformation at high temperature and the microstructure of the workpiece changes according to the plastic deformation. These changes affect the mechanical properties of workpiece. In order to optimize this process, both the plastic deformation of workpiece and its microstructural changes should be taken into consideration. Since material be...

A new generation of iron-based matrix composite reinforced by TiB2 particles was deformed in tension to investigate at a mesoscopic scale the localization plastic deformation relation with characteristic microstructural features (in particular, ferrite grain boundaries and particle/matrix interfaces). Large electron back-scattered diffraction (EBSD) maps improved angular resolution were acquire...

In the current study the nonlinear viscoelastic response of a polymer matrix composite under multiple creep/creep-recovery loading is presented. The influence of creep/creep-recovery multiple step loading in the overall strain response both viscoelastic and viscoplastic is examined and an attempt for modeling this behaviour is attempted. An increase in the parameters of nonlinearity is observed...

The computational simulation of the rolling process polycrystalline metal plate is performed using second-order homogenization finite element (FE) method. dynamically updated boundary condition (BC), which can describe relative slip displacement under counter-friction force, introduced to reproduce progress nodal and force BCs during process. To directly solve BC accompanying friction component...

Non-linear quasi-static axisymmetric indentation problem is studied for comparitive computational analysis between elasto-plastic parameters and mechanical behaviour of homogeneous engineering metal materials. Mathematical model, based on deformation theory version of J2 theory, leads to quasi-static elasto-plastic contact problem with unknown contact domain, depending on the value of a indenta...