Adaptive finite element procedures are presented for the analysis of broad classes of two-dimensional problems in visco plasticity which involve internal state variables. Several a posteriori error estimates are developed and used as a basis for refinements of meshes of triangular and quadrilateral elements. Algorithms are presented which reduce the computational complexity of the adaptive proc...

Stent implantation is a well-known non-surgical method to treat vascular diseases. As one of object implanted in the human body, it should have certain surface roughness. De Palma et.al ‎(1972) reported that surface roughness beyond the scale of a micrometer strongly hinders the process of surface passivation, thus it will lead to thrombus formation. Rough-ness of biomaterial implant turned out...

Abstract The European reduced activation ferritic/martensitic steel Eurofer97 in irradiated states displays significant nonlinear material behavior involving irradiation hardening, loss of strain and uniform elongation, as well irradiation-induced embrittlement. Nonlinear modeled on the continuum scale will help to estimate maximum operating range components beyond onset localized plastic flow....