Metallic nanowires usually exhibit ultrahigh strength but low tensile ductility owing to their limited strain hardening capability. Here we study the unique strain hardening behavior of the five-fold twinned Ag nanowires by nanomechanical testing and atomistic modeling. In situ tensile tests within a scanning electron microscope revealed strong strain hardening behavior of the five-fold twinned...

Although the prediction of earing in cup drawing process is considerably related to yield surface shape, evolution also essential for final ear form. The bending-unbending issue a fundamental subject occurring on die and punch shoulders. Since stress loading path dependent reversal loadings, conventional hardening models used monotonic conditions bring about inaccurate outcomes predicting ultim...

An advanced simulation process of a stainless steel member in ANSYS technology is described this paper. A three-point bending test hot rolled material grade 1.4301 (AISI 304) has been conducted. The cross-section the beam was IPE80, with span supports equal to 240 mm. results experimental were compared materially and geometrically nonlinear numerical analysis. In order describe behavior materia...

1967 Price 8s 6d net .-summary The time hardening, life fraction and strain hardening hypotheses variously proposed to describe tiniaxisl creep deformation are considered and compared with experimental evidence. It is concluded that the strain hardening hypothesis is the most nearly correct, the experimental strains usually being within 50% of those predicted. Further, rheological and modified ...

The objective of this research is to systematically understand how strain-hardening models and phase- temperature-dependent slopes affect the computed residual stresses in single-pass welded joints made widely used structural steel S235. Both experimental methods numerical simulation have been utilized for investigation. results reveal that material plasticity model has a massive effect on pred...

Finite element modeling has been used to study the development of surface deformation during indentation with a Vickers indenter. A wide range of materials with different elastic modulus and yield stresses are examined. Results show that in a pyramidal indentation process, for a perfectly plastic material, sinking-in during loading can change to pile-up in unloading. This phenomenon depends on ...

During heating (loading characterised by a progressive increase in strain rate) and cooling decrease numerical tests, performed using Discrete Element codes, granular materials experience phase transition phenomena, named this paper ‘dry liquefaction’ (when from solid the material starts behaving like fluid) resolidification’ (freezing, when fluid solid). The aim of consists reproducing phenome...

We study the problem of combined bending and tension an isotropic plate containing a through crack by distributed moments forces at infinity in absence contact between faces external loads applied to but presence plastic zones its tips. also take into account phenomenon hardening material satisfying Tresca plasticity conditions form surface layer or hinge. By using complex potentials plane clas...

In this treatment method laser radiation, which is guided from a co-axially expanding liquid jet-stream, locally initiates on a metal surface a thermochemical etching reaction, which leads to selective material removal. Time-resolved measurements of the electrical potential were correlated with the specific processing parameters to identify conditions for stable and enhanced chemical etching re...